Configuring Circuit Emulation Services

Table Of Contents

Configuring Circuit Emulation Services

Overview of CES T1/E1 Interfaces

Clocking Options

Interfaces Supported

Connectors Supported

Functions Supported by CES Modules

Framing Formats and Line Coding Options for CES Modules

Default CES T1/E1 Interface Configuration

Configuring CES T1/E1 Interfaces

General Guidelines for Creating Soft PVCs for Circuit Emulation Services

Configuring T1/E1 Unstructured Circuit Emulation Services

Overview of Unstructured Circuit Emulation Services

Configuring a Hard PVC for Unstructured CES

Verifying a Hard PVC for Unstructured CES

Configuring a Soft PVC for Unstructured CES

Verifying a Soft PVC for Unstructured CES

Configuring T1/E1 Structured (n x 64) Circuit Emulation Services

Overview of Structured Circuit Emulation Services

Configuring a Hard PVC for Structured CES

Verifying a Hard PVC for Structured CES

Configuring a Hard PVC for Structured CES with a Shaped VP Tunnel

Verifying a Hard PVC for Structured CES with a Shaped VP Tunnel

Configuring a Soft PVC for Structured CES

Verifying a Soft PVC for Structured CES

Configuring a Soft PVC for Structured CES with CAS Enabled

Verifying a Soft PVC for Structured CES with CAS Enabled

Configuring a Soft PVC for Structured CES with CAS and On-Hook Detection Enabled

Verifying a Soft PVC for Structured CES with CAS and On-Hook Detection Enabled

Creating Multiple Structured Soft PVCs on the Same CES Port

Verifying the Creation of Multiple Structured Soft PVCs on the Same CES Port

Reconfiguring a Previously Established Circuit

Deleting a Previously Established Circuit

Verifying Deletion of a Previously Established Circuit

Configuring SGCP

Operation

Configuring SGCP on the Entire Switch

Displaying SGCP

Configuring CES Circuits for SGCP

Displaying SGCP Endpoints

Displaying SGCP Connections

Configuring SGCP Request Handling

Configuring Call-Agent Address

Shutting Down SGCP

Configuring Circuit Emulation Services

This chapter describes circuit emulation services (CES) and how to configure the CES T1/E1 port adapters in the Catalyst 8540 MSR, Catalyst 8510 MSR, and LightStream 1010 ATM switch routers. You can use CES T1/E1 port adapters for links that require constant bit rate (CBR) services.

Note This chapter provides advanced configuration instructions for the Catalyst 8540 MSR, Catalyst 8510 MSR, and LightStream 1010 ATM switch routers. For an overview of CES applications and operation, refer to the Guide to ATM Technology. For complete descriptions of the commands mentioned in this chapter, refer to the ATM Switch Router Command Reference publication. For hardware installation and cabling instructions, refer to the ATM Port Adapter and Interface Module Installation Guide.

This chapter includes the following sections:

• Overview of CES T1/E1 Interfaces

• Configuring CES T1/E1 Interfaces

• General Guidelines for Creating Soft PVCs for Circuit Emulation Services

• Configuring T1/E1 Unstructured Circuit Emulation Services

• Configuring T1/E1 Structured (n x 64) Circuit Emulation Services

• Reconfiguring a Previously Established Circuit

• Deleting a Previously Established Circuit

• Configuring SGCP

Overview of CES T1/E1 Interfaces

You can use CES T1/E1 port adapters for links that require CBR services, such as interconnecting PBXs, time-division multiplexers (TDMs), and video conference equipment over campus, public, or private networks.

This section provides an overview of the hardware features and functions supported on the CES T1/E1 port adapters.

Clocking Options

You can configure each interface on the port adapter to support the following clocking options:

•Self-timing based on a stratum 4 level clock

•Loop timing from the received data stream—ideal for public network connections

•Timing synchronized to a selected master clock port—required to distribute a single clock across a network

Interfaces Supported

The number of CES T1/E1 interfaces you can configure is platform dependent:

•Catalyst 8540 MSR—up to 64 CES T1/E1 interfaces

•Catalyst 8510 MSR and LightStream 1010—up to 32 CES T1/E1 interfaces

Connectors Supported

The CES T1 port adapters support UTP connectors and the CES E1 port adapters support UTP, foil twisted-pair, or 75-ohm BNC connectors. Status and carrier-detect LEDs on each port give quick, visual indications of port status and operation. For detailed network management support, comprehensive statistics gathering and alarm monitoring capabilities are provided.

Functions Supported by CES Modules

The functions supported by a CES module include the following:

•Circuit emulation services interworking function (CES-IWF), which enables communication between CBR and ATM UNI interfaces

•T1/E1 CES unstructured services

•T1/E1 CES structured services

Framing Formats and Line Coding Options for CES Modules

The CES modules support the framing formats and line coding options shown in Table 18-1.

Table 18-1 CES Module Framing and Line Coding Options

Module

Framing Options and Description

Line Coding Options

CES T1 port adapter

•Super Frame (SF)

•Extended Super Frame (ESF)

ami or b8zs
(b8zs is the default)

CES E1 port adapter (120-ohm)
and
CES E1 port adapter (BNC)

•E1 CRC multiframe (e1_crc_mf_lt).

Configures the line type to e1_crc_mf, without channel associated signalling (CAS) enabled.

•E1 CRC multiframe (e1_crc_mfCAS_lt).

Configures the line type to e1_crc_mf, with CAS enabled.

•E1 (e1_lt).

Configures the line type to e1_lt.

•E1 multiframe (e1_mfCAS_lt).

Configures the line type to e1_mf, with CAS enabled.

ami or hdb3
(hdb3 is the default)

Default CES T1/E1 Interface Configuration

The following defaults are assigned to all CES T1/E1 interfaces:

•Loopback = no loopback

•Signalling mode = no signalling

•Transmit clock source = network-derived

•Data format = clear channel

•Line build-out (LBO) = 0 to 110 feet

•Cell delay variation = 2000 microseconds

•Channel associated signalling (CAS) = FALSE

•Partial fill = 47

•AAL1 service type = unstructured

•AAL1 clock mode = synchronous

The following defaults are assigned to CES T1 port adapters:

–Framing = ESF

–Line coding = B8ZS

The following defaults are assigned to CES E1 port adapters:

–Framing = E1_LT

–Line coding = HDB3

–International bits = 0x3

–National bits = 0x1f

–Multiframe spare bits = 0xb

Configuring CES T1/E1 Interfaces

To manually change any of the CES T1/E1 default configuration values, enter the interface cbr global configuration command to specify a CBR interface, as follows:

interface cbr card/subcard/port
To configure the CES T1/E1 interfaces perform the following commands, beginning in global configuration mode:

Command

Purpose

Step 1

Switch(config)# interface cbr card/subcard/port

Switch(config-if)#

Selects the physical interface to be configured and enters global configuration mode.

Step 2

Switch(config-if)# ces aal1 service {structured | unstructured}

Configures the service type. The default is unstructured.

Step 3

Switch(config-if)# ces aal1 clock {adaptive | srts | synchronous}

Configures the type of clocking.

Note For structured CES, the default is synchronous.

Step 4

Switch(config-if)# ces circuit circuit-id [cas]
[cdv max-req] [circuit-name name]
[partial-fill number] [shutdown]
[timeslots number]
[on-hook-detect pattern]

Configures the following CES connection attributes for the circuit:

•Circuit id number.

–For unstructured service, use 0.

–For CES T1 structured service,
use 1 through 24.

–For CES E1 structured service,
use 1 through 31.

•Enables channel-associated signalling for structured service only. The default is no cas.

•Enables the peak-to-peak cell delay variation requirement. The default is 2000 milliseconds.

•Sets the ASCII name for the CES-IWF circuit. The maximum length is 64 characters. The default is CBRx/x/x:0.

•Enables the partial AAL1 cell fill service for structured service only. The default is 47.

•Disables the circuit. The default is no shutdown.

•Configures the time slots for the circuit for structured service only.

•Configures on-hook detection.

Step 5

Switch(config-if)# ces dsx1 clock source {loop-timed | network-derived}

Configures the clock source. The default is network-derived.

Step 6

Switch(config-if)# ces dsx1 framing {sf | esf}

Switch(config-if)# ces dsx1 framing {e1_crc_mfCAS_lt | e1_crc_mf_lt | e1_lt | e1_mfCAS_lt}

Configures CES T1 framing mode. The default is esf.

Configures CES E1 framing mode. The default is e1_lt.

Step 7

Switch(config-if)# ces dsx1 lbo {0_110 | 110_220 | 220_330 | 330_440 | 440_550 | 550_660 | 660_above | square_pulse}

Configures the line build-out. The default is 0_110.

Step 8

Switch(config-if)# ces dsx1 linecode {ami | b8zs}

Switch(config-if)# ces dsx1 linecode {ami | hdb3}

Configures CES T1 line code type. The default is b8zs.

Configures CES E1 line code type. The default is hdb3.

Step 9

Switch(config-if)# ces dsx1 loopback {line | noloop | payload}

Configures the loopback test method. The default is noloop.

Step 10

Switch(config-if)# ces dsx1 signalmode robbedbit

Configures the CES T1 signal mode to robbedbit. The default is no.

Step 11

Switch(config-if)# ces pvc circuit-id interface atm card/subcard/port [vpi vpi] vci vci

Configures the destination port for the circuit and configures a hard PVC, as follows:

•Specifies the circuit identification.

–For unstructured service, use 0.

–For T1 structured service,
use 1 through 24.

–For E1 structured service,
use 1 through 31.

•Specifies the card/subcard/port number of the ATM interface.

•Specifies the virtual path identifier of the destination PVC.

•Specifies the virtual channel identifier of the destination PVC.

Switch(config-if)# ces pvc circuit-id dest-address atm-address [[vpi vpi] vci vci]
[retry-interval [first retry-interval]
[maximum retry-interval]]

Configures the destination port for the circuit and configures the soft PVC, as follows:

•Specifies the circuit identification.

–For unstructured service, use 0.

–For T1 structured service, use 1 through 24.

–For E1 structured service, use 1 through 31.

•Specifies the destination address of the soft PVC.

•Specifies the virtual path identifier of the destination PVC.

•Specifies the virtual channel identifier of the destination PVC.

•Configures retry interval timers for a soft PVC, as follows:

–Specifies in milliseconds, the retry interval after the first failed attempt. The default is 5,000.

Specifies in seconds, the maximum retry interval between any two attempts. The default is 60.

Examples

The following example shows how to change the default cell delay variation for circuit 0 to 30,000, using the ces circuit command:
Switch# configure terminalSwitch(config)# interface cbr 3/0/0Switch(config-if)# shutdownSwitch(config-if)# ces circuit 0 cdv 3000Switch(config-if)# no shutdown

Note You might have to use the shutdown command to shut down the interface before you can modify the circuit. After modifying the circuit, use the no shutdown command to reenable the interface.

The following example shows how to change the default CBR interface framing mode to super frame, using the ces dsx1 framing command:
Switch# configure terminalSwitch(config)# interface cbr 3/0/0Switch(config-if)# ces dsx1 framing sf

The following example shows how to change the default CBR interface line build-out length to range from 330 to 440 feet, using the ces dsx1 lbo command:
Switch# configure terminalSwitch(config)# interface cbr 3/0/0Switch(config-if)# ces dsx1 lbo 330_440

The following example shows how to change the default CBR interface line code method to binary 8 zero suppression, using the ces dsx1 linecode command:
Switch# configure terminalSwitch(config)# interface cbr 3/0/0Switch(config-if)# ces dsx1 linecode b8zs

The following example shows how to change the default CBR interface loopback method to payload, using the ces dsx1 loopback command:
Switch# configure terminalSwitch(config)# interface cbr 3/0/0Switch(config-if)# ces dsx1 loopback payload

See the "Troubleshooting the Interface Configuration" section to confirm your interface configuration.

General Guidelines for Creating Soft PVCs for Circuit Emulation Services

You can create either hard permanent virtual channels (PVCs) or soft PVCs for unstructured or structured CES, depending on your particular CES application requirements. The main difference between hard and soft PVCs is rerouting in case of failure, as follows:

•A hard PVC on a CES T1/E1 port—Should a failure occur in a midpoint switch, hard PVCs are not automatically rerouted.

•A soft PVC on a CES T1/E1 port—Should a failure occur in a midpoint switch, soft PVCs are rerouted automatically, assuming another route is available.

This section provides general guidelines for configuring soft PVCs for CES modules. For specific instructions for configuring both hard and soft PVCs, see the following sections:

• Configuring T1/E1 Unstructured Circuit Emulation Services

• Configuring T1/E1 Structured (n x 64) Circuit Emulation Services

Note The steps in these guidelines assume that you have already used the ces circuit commands to configure circuits on the CES interfaces. If you have not yet configured circuits on the CES interfaces, the show ces address command will not display any addresses. For simplicity, the steps in these guidelines describe how to create a soft PVC between interface modules in the same ATM switch router.

To configure soft PVCs for either unstructured or structured circuit emulation services, follow these steps:

Step 1 Determine which CES interfaces are currently configured in your ATM switch router chassis, using the show ces status command in privileged EXEC mode.
CESwitch# show ces statusInterface IF Admin Port Channels inName Status Status Type use------------- -------- --------- ----------- -----------CBR3/0/0 UP UP T1CBR3/0/1 DOWN UP T1CBR3/0/2 DOWN UP T1CBR3/0/3 UP UP T1

Step 2 Determine which two ports you want to define as participants in the soft PVC.

Step 3 Decide which of the two ports you want to designate as the destination (or passive) side of the soft PVC.

Note This is an arbitrary decision—you can choose either port as the destination end of the circuit. However, you must decide which port is to function in this capacity and proceed accordingly.

Step 4 Configure the destination (passive) side of the soft PVC. You must configure the destination end of the soft PVC first, as this end defines a CES-IWF ATM address for that circuit.

Note If the interface is up, you might have to disable it, using the shutdown command, before you can configure the circuit. After configuring the circuit, use the no shutdown command to reenable the interface.

CESwitch# configure terminalCESwitch(config)# interface cbr 3/0/1CESwitch(config-if)# shutdownCESwitch(config-if)# ces circuit 0 circuit-name CBR-PVC-BCESwitch(config-if)# no shutdown
Step 5 Retrieve the CES-IWF ATM address of the soft PVC's destination end, using the show ces address command. The following example shows how to display the CES-IWF ATM address and VPI/VCI for a CES circuit:
CESwitch# show ces address
CES-IWF ATM Address(es):47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1030.10 CBR-PVC-A vpi 0 vci 1647.0091.8100.0000.0060.5c71.1f01.4000.0c80.1030.20 CBR-PVC-AC vpi 0 vci 105647.0091.8100.0000.0060.5c71.1f01.4000.0c80.1034.10 CBR-PVC-B vpi 0 vci 104047.0091.8100.0000.0060.5c71.1f01.4000.0c80.1038.10 CBR-PVC-CA vp1 0 vci 3088

Step 6 Configure the source (active) end of the soft PVC last, using the information derived from Step 5. You must configure the source end of the soft PVC last, because that end not only defines the configuration information for the source port, but also requires you to enter the CES-IWF ATM address and VPI/VCI values for the destination circuit.

Note If the interface is up, you might have to disable it, using the shutdown command, before you can configure the circuit. After configuring the circuit, use the no shutdown command to reenable the interface.

CESwitch(config)# interface cbr 3/0/0CESwitch(config-if)# shutdownCESwitch(config-if)# ces circuit 0CESwitch(config-if)# ces pvc 0 dest-address 47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1034.10 vpi 0 vci 104CESwitch(config-if)# no shutdown

Step 7 To verify that the CES circuits are up on both sides (source and destination), run the show ces interface command. To verify that the soft PVC was established between two switches, run the show atm vc interface command.

Configuring T1/E1 Unstructured Circuit Emulation Services

This section provides an overview of unstructured (clear channel) circuit emulation services and describes how to configure CES modules for unstructured circuit emulation services.

Overview of Unstructured Circuit Emulation Services

Unstructured circuit emulation services in an ATM switch router network emulate point-to-point connections over T1/E1 leased lines. This service maps the entire bandwidth necessary for a T1/E1 leased line connection across the ATM network, allowing users to interconnect PBXs, TDMs, and video conferencing equipment.

For a detailed description of unstructured circuit emulation services, refer to the Guide to ATM Technology.

The circuit you set up on a CBR port for unstructured service is always identified as circuit 0, because you can establish only one unstructured circuit on any given CBR port. An unstructured circuit uses the entire bandwidth of a T1 port (1.544 Mbps) or an E1 port (2.048 Mbps).

The following subsections describe the procedures for configuring CES modules for unstructured circuit emulation services:

• Configuring a Hard PVC for Unstructured CES

• Verifying a Hard PVC for Unstructured CES

• Configuring a Soft PVC for Unstructured CES

• Verifying a Soft PVC for Unstructured CES

Configuring Network Clocking for Unstructured CES

Circuit emulation services require that the network clock be configured properly. Unstructured services can use synchronous, Synchronous Residual Time Stamp (SRTS), or adaptive clocking mode. For instructions on configuring network clocking, see the "Configuring Network Clocking" section on page 3-10. For a discussion of clocking issues and network examples, refer to the network clock synchronization and network clocking for CES topics in the Guide to ATM Technology.

Configuring Synchronous Clocking With an OC-12c Interface Module

When synchronous clocking is being used and propagated via an OC-12c interface module, be sure to use the following configurations:

•For the Catalyst 8540 MSR, use the optional clocking module.

•For the Catalyst 8510 MSR and LightStream 1010 ATM switch routers, use feature card per flow queueing (FC-PFQ).

Configuring a Hard PVC for Unstructured CES

A CES module converts CBR traffic into ATM cells for propagation through an ATM network. CBR traffic arriving on a CES module port must first be segmented into ATM cells. This cell stream is then directed to an outgoing ATM or CBR port.

Note As a general rule when configuring a hard PVC, you must interconnect a CBR port and an ATM port in the same ATM switch router chassis.

Figure 18-1 displays unstructured circuit emulation services configured on an ATM switch router, using ATM and CES interface modules to create a hard PVC. In this example, the hard permanent virtual channel (PVC) also uses adaptive clocking, and this CES circuit enables bidirectional, unstructured CBR traffic to flow between these two modules.

Figure 18-1 Hard PVC Configured for Unstructured CES

To configure a hard PVC for unstructured CES, follow these steps, beginning in privileged EXEC mode:

Command

Purpose

Step 1

Switch# show ces status

Displays information about the current CBR interfaces.

Use this command to choose the source CBR port.

Step 2

Switch# show atm status

Displays information about the current ATM interfaces.

Use this command to choose the destination ATM port.

Note The interface must be up.

Step 3

Switch# configure terminal

Switch(config)#

At the privileged EXEC prompt, enters global configuration mode.

Step 4

Switch(config)# interface cbr card/subcard/port

Switch(config-if)#

Selects the physical interface to be configured.

Step 5

Switch(config-if)# shutdown

Disables the interface.

Step 6

Switch(config-if)# ces aal1 service {structured | unstructured}

Configures the CES interface AAL1 service type.

Step 7

Switch(config-if)# ces aal1 clock {adaptive | srts | synchronous}

Configures the AAL1 clock mode.

Step 8

Switch(config-if)# ces circuit circuit-id circuit-name name

Configures the CES interface circuit identifier and circuit name.

Note For unstructured service, use 0 for the circuit identifier.

Step 9

Switch(config-if)# ces pvc circuit-id interface atm card/subcard/port vpi vpi vci vci

Configures the hard PVC to the ATM interface and VPI/VCI.

Note The VPI/VCI are arbitrary here. They are not fixed, whereas the VPI/VCI described in the "General Guidelines for Creating Soft PVCs for Circuit Emulation Services" section are fixed.

Step 10

Switch(config-if)# no shutdown

Reenables the interface.

Example

The following example shows how to configure the hard PVC for unstructured CES (shown in Figure 18-1):
CESwitch# show ces statusInterface IF Admin Port Channels inName Status Status Type use------------- -------- --------- ----------- -----------CBR3/0/0 UP UP T1CBR3/0/1 DOWN UP T1CBR3/0/2 DOWN UP T1CBR3/0/3 UP UP T1
CESwitch# show atm statusNUMBER OF INSTALLED CONNECTIONS: (P2P=Point to Point, P2MP=Point to MultiPoint,MP2P=Multipoint to Point)
Type PVCs SoftPVCs SVCs TVCs PVPs SoftPVPs SVPs TotalP2P 27 2 13 0 0 0 0 42P2MP 0 0 2 0 0 0 0 2MP2P 0 0 0 0 0 0 0 0TOTAL INSTALLED CONNECTIONS = 44
PER-INTERFACE STATUS SUMMARY AT 18:12:45 UTC Thu Jul 22 1999:Interface IF Admin Auto-Cfg ILMI Addr SSCOP HelloName Status Status Status Reg State State State------------- -------- ------------ -------- ------------ --------- --------ATM0/0/1 DOWN down waiting n/a Idle n/aATM0/0/5 DOWN shutdown waiting n/a Idle n/aATM0/0/6 DOWN shutdown waiting n/a Idle n/aATM0/0/7 DOWN shutdown waiting n/a Idle n/aATM0/0/ima1 UP up done UpAndNormal Active 2way_inATM0/1/0 DOWN shutdown waiting n/a Idle n/aATM0/1/1 DOWN shutdown waiting n/a Idle n/aATM0/1/2 DOWN shutdown waiting n/a Idle n/aATM0/1/3 DOWN shutdown waiting n/a Idle n/aATM0/1/7 DOWN down waiting n/a Idle n/aATM0/1/ima2 UP up done UpAndNormal Active 2way_inATM1/0/0 DOWN down waiting n/a Idle n/aATM1/0/1 DOWN down waiting n/a Idle n/aATM1/0/2 DOWN down waiting n/a Idle n/aATM1/0/3 UP up done UpAndNormal Active n/aATM1/1/0 UP up done UpAndNormal Active n/aATM1/1/1 DOWN down waiting n/a Idle n/aATM1/1/2 DOWN down waiting n/a Idle n/aATM1/1/3 DOWN down waiting n/a Idle n/aATM2/0/0 UP up n/a UpAndNormal Idle n/aATM-P3/0/3 UP up waiting n/a Idle n/aATM3/1/0 DOWN down waiting n/a Idle n/aATM3/1/1 UP up done UpAndNormal Active 2way_inATM3/1/1.99 UP up done UpAndNormal Active 2way_inATM3/1/2 DOWN down waiting n/a Idle n/aATM3/1/3 DOWN down waiting n/a Idle n/aATM-P4/0/0 UP up waiting n/a Idle n/a
CESwitch# configure terminalCESwitch(config)# interface cbr 3/0/0CESwitch(config-if)# shutdownCESwitch(config-if)# ces aal1 service unstructuredCESwitch(config-if)# ces aal1 clock adaptiveCESwitch(config-if)# ces circuit 0 circuit-name CBR-PVC-ACESwitch(config-if)# ces pvc 0 interface atm 0/1/3 vpi 0 vci 100CESwitch(config-if)# no shutdown
Verifying a Hard PVC for Unstructured CES

To verify the hard PVC configuration, use the following privileged EXEC commands:

Command

Purpose

show ces circuit

Shows configuration information for the hard PVC.

show ces circuit interface cbr card/subcard/port circuit-id

Shows detailed interface configuration information for the hard PVC.

Examples

The following example shows how to display the basic information about the hard PVC shown in Figure 18-1, using the show ces circuit command:
CESwitch# show ces circuitInterface Circuit Circuit-Type X-interface X-vpi X-vci StatusCBR3/0/0 0 HardPVC ATM0/1/3 0 100 UP

The output from this command verifies the source (CBR 3/0/0) and destination (ATM 0/1/3) port IDs of the hard PVC and indicates that the circuit is up.

The following example shows how to display detailed information about the hard PVC shown in Figure 18-1, using the show ces circuit interface command:
CESwitch# show ces circuit interface cbr 3/0/0 0Circuit: Name CBR-PVC-A, Circuit-state ADMIN_UP / oper-state UPInterface CBR3/0/0, Circuit_id 0, Port-Type T1, Port-State UPPort Clocking network-derived, aal1 Clocking Method CESIWF_AAL1_CLOCK_ADAPTChannel in use on this port: 1-24Channels used by this circuit: 1-24Cell-Rate: 4107, Bit-Rate 1544000cas OFF, cell_header 0x100 (vci = 16)Configured CDV 2000 usecs, Measured CDV unavailableDe-jitter: UnderFlow 903952, OverFlow 0ErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0state: VcAlarm, maxQueueDepth 827, startDequeueDepth 437Partial Fill: 47, Structured Data Transfer 0HardPVCsrc: CBR3/0/0 vpi 0, vci 16Dst: ATM0/1/3 vpi 0, vci 100

The output from this command verifies the following configuration information:

•The circuit named CBR-PVC-A is in an UP state.

•The interface CBR 3/0/0 has a circuit id of 0 (because the entire bandwidth of the port is dedicated to that circuit).

•The AAL1 clocking method is adaptive clocking.

•The source port for the hard PVC is CBR 3/0/0. The destination port is ATM 0/1/3.

Configuring a Soft PVC for Unstructured CES

In a soft PVC, as well as a hard PVC, you configure both ends of the CES circuit. However, a soft PVC typically involves CES modules at opposite edges of an ATM network, so a soft PVC can be set up between any two CES modules anywhere in your network.

The destination address of a soft PVC can point to either of the following:

•Any ATM switch router external ATM port in the network

•A port in any other CES module in the network

For example, to set up a soft PVC involving a local node and a destination node at the opposite edge of the network, you need to determine the CES-IWF ATM address of the port in the destination node to complete soft PVC setup.

To obtain the destination address (dest-address) for a port already configured in a CES port adapter, log into the remote ATM switch router containing that module. Then use the show ces address command to display all the CES-IWF ATM addresses currently configured for that node.

Figure 18-2 displays a soft PVC configured for unstructured CES. The soft PVC uses adaptive clocking and the source clock is network-derived.

Note Typically you will configure a soft PVC between CES modules anywhere in your network. For simplicity, this example and the accompanying procedure describe how to create a soft PVC between modules in the same ATM switch router chassis.

Figure 18-2 Soft PVC Configured for Unstructured CES

Configuring a soft PVC for unstructured CES is a two-phase process:

• Phase 1—Configuring the Destination (Passive) Side of the Soft PVC

• Phase 2—Configuring the Source (Active) Side of the Soft PVC

Phase 1—Configuring the Destination (Passive) Side of the Soft PVC

To configure the destination (passive) side of a soft PVC destination port, follow these steps, beginning in privileged EXEC mode:

Command

Purpose

Step 1

Switch# show ces status

Displays information about current CBR interfaces.

Use this command to choose the destination port.

Step 2

Switch# configure terminal

Switch(config)#

At the privileged EXEC prompt, enters global configuration mode.

Step 3

Switch(config)# interface cbr card/subcard/port

Switch(config-if)#

Selects the physical interface to be configured.

Step 4

Switch(config-if)# shutdown

Disables the interface.

Step 5

Switch(config-if)# ces aal1 service {structured | unstructured}

Configures the CES interface AAL1 service type.

Step 6

Switch(config-if)# ces aal1 clock {adaptive | srts | synchronous}

Configures the CES interface AAL1 clock mode.

Step 7

Switch(config-if)# ces dsx1 clock source {loop-timed | network-derived}

Configures the CES interface clock source.

Step 8

Switch(config-if)# ces circuit circuit-id circuit-name name

Configures the CES interface circuit identifier and circuit name.

Note For unstructured service, use 0 for the circuit identifier.

Step 9

Switch(config-if)# no shutdown

Reenables the interface.

Example

The following example shows how to configure the destination (passive) side of a soft PVC, as shown in Figure 18-2:
CESwitch# show ces status
Interface IF Admin Port Channels inName Status Status Type use------------- -------- --------- ----------- -----------CBR3/0/0 UP UP T1CBR3/0/1       UP        UP T1CBR3/0/2       UP        UP          T1CBR3/0/3 UP UP T1
CESwitch# configure terminalCESwitch(config)# interface cbr 3/0/1CESwitch(config-if)# shutdownCESwitch(config-if)# ces aal1 service unstructuredCESwitch(config-if)# ces aal1 clock synchronousCESwitch(config-if)# ces dsx1 clock source network-derivedCESwitch(config-if)# ces circuit 0 circuit-name CBR-PVC-BCESwitch(config-if)# no shutdown

Note If you do not specify the circuit name and logical name parameters in the command line, the system automatically assigns a unique default name in the form CBRx/y/z:# for the circuit being configured. For example, the default name for this particular circuit is CBR3/0/1:0.

Phase 2—Configuring the Source (Active) Side of the Soft PVC

To configure the source (active) side of a soft PVC destination port, follow these steps, beginning in privileged EXEC mode:

Command

Purpose

Step 1

Switch# show ces address

Shows the CES address and VPI/VCI for the destination end of the circuit.

Use this command to retrieve the destination's VPI/VCI.

Step 2

Switch# configure terminal

Switch(config)#

At the privileged EXEC prompt, enters global configuration mode.

Step 3

Switch(config)# interface cbr card/subcard/port

Switch(config-if)#

Selects the physical interface to be configured.

Step 4

Switch(config-if)# shutdown

Disables the interface.

Step 5

Switch(config-if)# ces aal1 service {structured | unstructured}

Configures the CES interface AAL1 service type.

Step 6

Switch(config-if)# ces aal1 clock {adaptive | srts | synchronous}

Configures the CES interface AAL1 clock mode.

Step 7

Switch(config-if)# ces dsx1 clock source {loop-timed | network-derived}

Configures the CES interface clock source.

Step 8

Switch(config-if)# ces circuit circuit-id circuit-name name

Configures the CES interface circuit identifier and circuit name.

Note For unstructured service, use 0 for the circuit identifier.

Step 9

Switch(config-if)# ces pvc circuit-id dest-address remote_atm_address vpi vpi vci vci

Configures the soft PVC to the destination CES-IWF ATM addresses and VPI/VCI of the circuit.

Note Use the destination's VPI/VCI, which you retrieved in Step 1.

Step 10

Switch(config-if)# no shutdown

Reenables the interface.

Example

The following example shows how to configure the source (active) side of a soft PVC, as shown in Figure 18-2:
CESwitch# show ces address
CES-IWF ATM Address(es):47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1034.10 CBR-PVC-B
CESwitch# configure terminalCESwitch(config)# interface cbr 3/0/0CESwitch(config-if)# shutdownCESwitch(config-if)# ces aal1 service unstructuredCESwitch(config-if)# ces aal1 clock synchronousCESwitch(config-if)# ces dsx1 clock source network-derivedCESwitch(config-if)# ces circuit 0 circuit-name CBR-PVC-ACESwitch(config-if)# ces pvc 0 dest-address 47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1034.10 vpi 0 vci 1040CESwitch(config-if)# no shutdown
Verifying a Soft PVC for Unstructured CES

To verify the soft PVC configuration, use the following privileged EXEC commands:

Command

Purpose

show ces circuit

Shows the soft PVC configuration information.

show ces circuit interface cbr card/subcard/port circuit-id

Shows the detailed soft PVC interface configuration information.

Examples

The following example shows how to display the soft PVC configured in the previous section (shown in Figure 18-2), using the show ces circuit command:
CESwitch# show ces circuitInterface Circuit Circuit-Type X-interface X-vpi X-vci StatusCBR3/0/0 0 Active SoftVC ATM-P3/0/3 0        16 UPCBR3/0/1    0 Passive SoftVC ATM-P3/0/3 0      1040 UP

The following example shows how to display the detailed circuit information for CBR 3/0/1, the destination (passive) side of the soft PVC (shown in Figure 18-2), using the show ces circuit interface cbr command:
CESwitch# show ces circuit interface cbr 3/0/1 0Circuit: Name CBR-PVC-B, Circuit-state ADMIN_UP / oper-state UPInterface CBR3/0/1, Circuit_id 0, Port-Type T1, Port-State UPPort Clocking network-derived, aal1 Clocking Method CESIWF_AAL1_CLOCK_SYNCChannel in use on this port: 1-24Channels used by this circuit: 1-24Cell-Rate: 4107, Bit-Rate 1544000cas OFF, cell_header 0xC100 (vci = 3088)Configured CDV 2000 usecs, Measured CDV 2378 usecsDe-jitter: UnderFlow 137, OverFlow 0ErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0state: VcActive, maxQueueDepth 823, startDequeueDepth 435Partial Fill: 47, Structured Data Transfer 0Passive SoftVCSrc: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.803c.10 vpi 0, vci 1040Dst: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.8030.00

The following example shows how to display the detailed circuit information for CBR 3/0/0, the source (active) side of the soft PVC (shown in Figure 18-2), using the show ces circuit interface cbr command:
CESwitch# show ces circuit interface cbr 3/0/0 0Circuit: Name CBR-PVC-A, Circuit-state ADMIN_UP / oper-state UPInterface CBR3/0/0, Circuit_id 0, Port-Type T1, Port-State UPPort Clocking network-derived, aal1 Clocking Method CESIWF_AAL1_CLOCK_SYNCChannel in use on this port: 1-24Channels used by this circuit: 1-24Cell-Rate: 4107, Bit-Rate 1544000cas OFF, cell_header 0x100 (vci = 16)Configured CDV 2000 usecs, Measured CDV 326 usecsDe-jitter: UnderFlow 1, OverFlow 0ErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0state: VcAlarm, maxQueueDepth 823, startDequeueDepth 435Partial Fill: 47, Structured Data Transfer 0Active SoftVCSrc: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.8030.10 vpi 0, vci 16Dst: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.803c.10
Configuring T1/E1 Structured (n x 64) Circuit Emulation Services

This section provides an overview of structured (n x 64 Kbps) circuit emulation services and describes how to configure CES modules for structured circuit emulation services.

Overview of Structured Circuit Emulation Services

An important distinction between structured and unstructured circuit emulation services is that structured circuit emulation services allow you to allocate T1/E1 bandwidth. Structured circuit emulation services only use the T1/E1 bandwidth actually required to support the active structured circuit(s) you configure.

For example, configuring a CES module for structured services allows you to define multiple hard PVCs or soft PVCs for any CES T1 or E1 port. In both module types, any bits not available for structured circuit emulation services are used for framing and out-of-band control.

n x 64 refers to a circuit bandwidth (data transmission speed) provided by the aggregation of n x 64-Kbps channels, where n is an integer greater than or equal to 1. The 64-Kbps data rate, or the DS0 channel, is the basic building block of the T carrier systems (T1, T2, and T3).

The T1/E1 structured (n x 64) circuit emulation services enable a CES module to function in the same way as a classic Digital Access and Crossconnect System (DACS) switch.

The Simple Gateway Control Protocol (SGCP) provides similar functionality by controlling structured CES circuits for voice over ATM. For additional information see the "Configuring SGCP" section .

For a detailed description of structured circuit emulation services, refer to the Guide to ATM Technology.

Configuring Network Clocking for Structured CES

Circuit emulation services require that the network clock be configured properly. For structured services, synchronous clocking is required. For instructions on configuring network clocking, see the "Configuring Network Clocking" section on page 3-10. For a discussion of clocking issues and network examples, refer to the network clock synchronization and network clocking for CES topics in the Guide to ATM Technology.

Configuring Synchronous Clocking With an OC-12c Interface Module

When synchronous clocking is being used and propagated via an OC-12c interface module, be sure to use the following configurations:

•For the Catalyst 8540 MSR, use the optional clocking module.

•For the Catalyst 8510 MSR and LightStream 1010 ATM switch routers, use feature card per flow queueing (FC-PFQ).

Configuring a Hard PVC for Structured CES

This section describes how to configure a hard permanent virtual channel (PVC) for structured circuit emulation services.

Figure 18-3 shows that the hard PVC for structured CES connection is configured with the following parameters:

•Four time slots (DS0 channels 1 to 3, and 7) are configured for a circuit named CBR-PVC-A.

•ATM port 0/1/3 in the ATM switch router is designated as the destination port of the hard PVC.

•The CES AAL1 service is structured and the clock source is network-derived.

•The framing is esf and the line code is b8zs.

Figure 18-3 Hard PVC Configured for Structured CES

To configure the CES port for structured CES, follow these steps, beginning in privileged EXEC mode:

Command

Purpose

Step 1

Switch# show ces status

Displays information about current CBR interfaces.

Use this command to choose the source port.

Step 2

Switch# show atm status

Displays information about current ATM interfaces.

Use this command to choose the destination port.

Step 3

Switch# configure terminal

Switch(config)#

At the privileged EXEC prompt, enters global configuration mode.

Step 4

Switch(config)# interface cbr card/subcard/port

Switch(config-if)#

Selects the physical interface to be configured.

Step 5

Switch(config-if)# shut

Step 6

Switch(config-if)# ces aal1 service {structured | unstructured}

Configures the CES interface AAL1 service type.

Step 7

Switch(config-if)# ces dsx1 clock source {loop-timed | network-derived}

Configures the CES interface clock source.

Step 8

Switch(config-if)# ces dsx1 framing {sf | esf}

Switch(config-if)# ces dsx1 framing {e1_crc_mfCAS_lt | e1_crc_mf_lt | e1_lt | e1_mfCAS_lt}

Configures the CES T1 framing type. The default is esf.

Configures the CES E1 framing type. For CES E1, the default is e1_lt.

Example

The following example shows how to configure the hard PVC for structured T1 CES, as shown in Figure 18-3:
CESwitch# show ces status
Interface IF Admin Port Channels inName Status Status Type use------------- -------- --------- ----------- -----------CBR3/0/0 UP UP T1CBR3/0/1       UP        UP T1CBR3/0/2       UP        UP          T1CBR3/0/3 UP UP T1
CESwitch# show atm status
NUMBER OF INSTALLED CONNECTIONS: (P2P=Point to Point, P2MP=Point to MultiPoint,MP2P=Multipoint to Point)
Type PVCs SoftPVCs SVCs TVCs PVPs SoftPVPs SVPs TotalP2P 27 2 13 0 0 0 0 42P2MP 0 0 2 0 0 0 0 2MP2P 0 0 0 0 0 0 0 0TOTAL INSTALLED CONNECTIONS = 44
PER-INTERFACE STATUS SUMMARY AT 18:12:45 UTC Thu Jul 22 1999:Interface IF Admin Auto-Cfg ILMI Addr SSCOP HelloName Status Status Status Reg State State State------------- -------- ------------ -------- ------------ --------- --------ATM0/0/1 DOWN down waiting n/a Idle n/aATM0/0/5 DOWN shutdown waiting n/a Idle n/aATM0/0/6 DOWN shutdown waiting n/a Idle n/aATM0/0/7 DOWN shutdown waiting n/a Idle n/aATM0/1/0 DOWN shutdown waiting n/a Idle n/aATM0/1/1 DOWN shutdown waiting n/a Idle n/aATM0/1/2 DOWN shutdown waiting n/a Idle n/aATM0/1/3            UP up done UpAndNormal Active n/aATM0/1/7 DOWN down waiting n/a Idle n/aATM1/0/0 DOWN down waiting n/a Idle n/aATM1/0/1 DOWN down waiting n/a Idle n/aATM1/0/2 DOWN down waiting n/a Idle n/aATM1/0/3 UP up done UpAndNormal Active n/aATM1/1/0 UP up done UpAndNormal Active n/aATM1/1/1 DOWN down waiting n/a Idle n/aATM1/1/2 DOWN down waiting n/a Idle n/aATM1/1/3 DOWN down waiting n/a Idle n/aATM2/0/0 UP up n/a UpAndNormal Idle n/aATM-P3/0/3 UP up waiting n/a Idle n/aATM3/1/0 DOWN down waiting n/a Idle n/aATM3/1/1 UP up done UpAndNormal Active 2way_inATM3/1/2 DOWN down waiting n/a Idle n/aATM3/1/3 DOWN down waiting n/a Idle n/aATM-P4/0/0 UP up waiting n/a Idle n/a
CESwitch# configure terminalCESwitch(config)# interface cbr 3/0/0CESwitch(config-if)# shutdownCESwitch(config-if)# ces aal1 service structuredCESwitch(config-if)# ces dsx1 clock source network-derivedCESwitch(config-if)# ces dsx1 framing esfCESwitch(config-if)# ces dsx1 linecode b8zsCESwitch(config-if)# ces circuit 1 timeslots 1-3,7CESwitch(config-if)# ces circuit 1 circuit-name CBR-PVC-ACESwitch(config-if)# ces pvc 1 interface atm 0/1/3 vpi 0 vci 100CESwitch(config-if)# no shutdown

Note If you do not specify the circuit name and logical name parameters in the command line, the system automatically assigns a unique default name in the form CBRx/y/z:# for the circuit being configured. For example, the default name for this particular circuit is CBR3/0/0:1. For structured CES, the circuit number sequence always begins at 1 for each port in a CES module.

The virtual path identifier/virtual channel identifier (VPI/VCI) values shown in the example (vpi 0 vci 100) are for demonstration purposes only. The service provider you select gives you a virtual path for your data, but you must decide which VCI number to assign to the circuit.

Verifying a Hard PVC for Structured CES

To verify the hard PVC configured with structured services, use the following privileged EXEC commands:

Command

Purpose

show ces circuit

Shows the configuration information for the hard PVC.

show ces circuit interface cbr card/subcard/port circuit-id

Shows the detailed interface configuration information for the hard PVC.

Examples

The following example shows the details of the hard PVC, shown in Figure 18-3, using the show ces circuit command:
CESwitch# show ces circuitInterface Circuit Circuit-Type X-interface X-vpi X-vci StatusCBR3/0/0    1       HardPVC ATM0/1/3 0 100 UP

The output from this command verifies the source (CBR 3/0/0) and destination (ATM 0/1/3) port IDs of the hard PVC and indicates that the circuit is up.

The following example shows the interface details for port CBR 3/0/0 (shown in Figure 18-3), using the show ces circuit interface cbr command:
CESwitch# show ces circuit interface cbr 3/0/0 1Circuit: Name CBR-PVC-A, Circuit-state ADMIN_UP / oper-state UPInterface CBR3/0/0, Circuit_id 1, Port-Type T1, Port-State UPPort Clocking network-derived, aal1 Clocking Method CESIWF_AAL1_CLOCK_SYNCChannel in use on this port: 1-3, 7Channels used by this circuit: 1-3, 7Cell-Rate: 4107, Bit-Rate 1544000cas OFF, cell_header 0x100 (vci = 16)Configured CDV 2000 usecs, Measured CDV 326 usecsDe-jitter: UnderFlow 1, OverFlow 0ErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0state: VcAlarm, maxQueueDepth 823, startDequeueDepth 435Partial Fill: 47, Structured Data Transfer 1HardPVCSrc: CBR3/0/0 vpi 0, vci 16Dst: ATM0/1/3 vpi 0, vci 100

The output from this command verifies the following configuration information:

•The circuit named CBR-PVC-A is in an UP state.

•The interface CBR 3/0/0 has a circuit id of 1 (because structured CES services always begin at 1 for each port in a CES module).

•The channels being used by this circuit are 1-3 and 7.

•The source port for the hard PVC is CBR 3/0/0. The destination port is ATM 0/1/3.

Configuring a Hard PVC for Structured CES with a Shaped VP Tunnel

A shaped VP tunnel is a VP tunnel that, by default, carries only VCs of the constant bit rate (CBR) service category with a peak cell rate (PCR). However, it is possible to configure a shaped virtual path (VP) tunnel to carry VCs of other service categories. The overall output of the shaped VP tunnel is rate-limited, by hardware, to the PCR of the tunnel.

This section describes how to configure a hard PVC for structured CES with a shaped VP tunnel, which is a two-phase process, as follows:

• Phase 1—Configuring a Shaped VP Tunnel

• Phase 2—Configuring a Hard PVC

For more information about configuring shaped VP tunnels, refer to the "Configuring VP Tunnels" section .

Figure 18-4 shows an example of a how a structured CES circuit can be configured with a shaped VP tunnel.

Figure 18-4 Structured CES Circuit Configured with a Shaped VP Tunnel

Phase 1—Configuring a Shaped VP Tunnel

To configure a shaped VP tunnel, follow these steps, beginning in global configuration mode:

Command

Purpose

Step 1

Switch# configure terminal

Switch(config)#

At the privileged EXEC prompt, enters global configuration mode.

Step 2

Switch(config)# atm connection-traffic-table-row [index row-index] cbr pcr rate

Configures the connection traffic table row for the desired PVP CBR cell rate.

Step 3

Switch(config)# interface atm card/subcard/port

Switch(config-if)#

Selects the physical interface to be configured.

Step 4

Switch(config-if)# shutdown

Disables the interface.

Step 5

Switch(config-if)# atm pvp vpi [hierarchical | shaped] [rx-cttr index] [tx-cttr index]

Configures a shaped VP tunnel, as follows:

•Specifies whether the tunnel is hierarchical or shaped.

Note To configure a shaped VP tunnel to carry PVCs of other (non-CBR) service categories, the VP tunnel must be configured as a hierarchical tunnel.

•Specifies the connection traffic table row in the received direction. The default is 1.

•Specifies the connection traffic table row in the transmitted direction. The default is 1.

Step 6

Switch(config-if)# no shutdown

Reenables the interface.

Step 7

Switch(config-if)# interface atm card/subcard/port.subinterface#

Switch(config-subif)#

Configures a subinterface.

Note You cannot create a subinterface on the route processor interface ATM 0.

Step 8

Switch(config-subif)# exit

Switch(config)#

Exits subinterface mode.

Note Even though the shaped VP tunnel is defined as CBR, it can carry PVCs of another service category by substituting the new service category after the tunnel interface has been initially configured. For information about configuring VP tunnels with other (non-CBR) service categories, see the section "Configure Interface Service Category Support" in the chapter "Configuring Resource Management."

Example

The following example shows how to configure a shaped VP tunnel.
CESwitch# configure terminalCESwitch(config)# atm connection-traffic-table-row index 10 cbr pcr 4000CESwitch(config)# interface atm 0/0/0CESwitch(config-if)# shutdownCESwitch(config-if)# atm pvp 1 shaped rx-cttr 10 tx-cttr 10CESwitch(config-if)# no shutdownCESwitch(config-if)# interface atm 0/0/0.1CESwitch(config-subif)# exitCESwitch(config)#

Note A shaped VP tunnel is defined as a CBR VP with a PCR. A maximum of 64 shaped VP tunnels can be defined on each of the following interface groups: (0/0/x, 1/0/x), (0/1/x, 1/1/x), (2/0/x, 3/0/x), (2/1/x, 3/1/x), (9/0/x, 10/0/x), (9/1/x, 10/1/x), (11/0/x, 12/0/x) and (11/1/x, 12/1/x). For further limitations on shaped VP tunnels, refer to the "Configuring a Shaped VP Tunnel" section .

Phase 2—Configuring a Hard PVC

To configure a hard PVC, follow these steps:

Command

Purpose

Step 1

Switch# show ces status

Displays information about the current CBR interfaces.

Use this command to choose the source CBR port.

Step 2

Switch# show atm status

Displays information about the current ATM interfaces.

Use this command to choose the destination ATM port.

Note The interface must be up.

Step 3

Switch# configure terminal

Switch(config)#

At the privileged EXEC prompt, enters global configuration mode.

Step 4

Switch(config)# interface cbr card/subcard/port

Switch(config-if)#

Selects the physical interface to be configured.

Step 5

Switch(config-if)# shutdown

Disables the interface.

Step 6

Switch(config-if)# ces aal1 service {structured | unstructured}

Configures the CES interface AAL1 service type.

Step 7

Switch(config-if)# ces circuit circuit-id [timeslots number]

Configures the following CES connection attributes for the circuit:

•Circuit id number.

–For CES T1 structured service,
use 1 through 24.

–For CES E1 structured service,
use 1 through 31.

Note The 0 circuit identifier is reserved for unstructured service.

•Time slots for the circuit for structured service only.

–For CES T1, the range is 1 through 24.

•For CES E1, the range is 1 through 31.

Step 8

Switch(config-if)# ces pvc circuit-id interface atm card/subcard/port vpi vpi vci vci

Configures the destination port for the circuit and configures a hard PVC, as follows:

•Specifies the circuit identification. (Use the circuit id from the previous step.)

•Specifies the card/subcard/port number of the ATM interface.

•Specifies the VPI of the destination PVC.

•Specifies the VCI of the destination PVC.

Step 9

Switch(config-if)# no shutdown

Reenables the interface.

Example

The following example shows how to configure hard PVCs for the shaped VP tunnel.
CESwitch# show ces statusInterface IF Admin Port Channels inName Status Status Type use------------- -------- --------- ----------- -----------CBR3/1/0 UP UP T1CBR3/1/1 UP UP T1CBR3/1/2 UP UP T1CBR3/1/3 UP UP T1CESwitch# show atm status
NUMBER OF INSTALLED CONNECTIONS: (P2P=Point to Point, P2MP=Point to MultiPoint,MP2P=Multipoint to Point)
Type PVCs SoftPVCs SVCs TVCs PVPs SoftPVPs SVPs TotalP2P 27 2 13 0 0 0 0 42P2MP 0 0 2 0 0 0 0 2MP2P 0 0 0 0 0 0 0 0TOTAL INSTALLED CONNECTIONS = 44
PER-INTERFACE STATUS SUMMARY AT 18:12:45 UTC Thu Jul 22 1999:Interface IF Admin Auto-Cfg ILMI Addr SSCOP HelloName Status Status Status Reg State State State------------- -------- ------------ -------- ------------ --------- --------ATM0/0/1 DOWN down waiting n/a Idle n/aATM0/0/5 DOWN shutdown waiting n/a Idle n/aATM0/0/6 DOWN shutdown waiting n/a Idle n/aATM0/0/7 DOWN shutdown waiting n/a Idle n/aATM0/0/ima1 UP up done UpAndNormal Active 2way_inATM0/1/0 DOWN shutdown waiting n/a Idle n/aATM0/1/1 DOWN shutdown waiting n/a Idle n/aATM0/1/2 DOWN shutdown waiting n/a Idle n/aATM0/1/3            UP up done UpAndNormal Active n/aATM0/1/7 DOWN down waiting n/a Idle n/aATM0/1/ima2 UP up done UpAndNormal Active 2way_inATM1/0/0 DOWN down waiting n/a Idle n/aATM1/0/1 DOWN down waiting n/a Idle n/aATM1/0/2 DOWN down waiting n/a Idle n/aATM1/0/3 UP up done UpAndNormal Active n/aATM1/1/0 UP up done UpAndNormal Active n/aATM1/1/1 DOWN down waiting n/a Idle n/aATM1/1/2 DOWN down waiting n/a Idle n/aATM1/1/3 DOWN down waiting n/a Idle n/aATM2/0/0 UP up n/a UpAndNormal Idle n/aATM-P3/0/3 UP up waiting n/a Idle n/aATM3/1/0 DOWN down waiting n/a Idle n/aATM3/1/1 UP up done UpAndNormal Active 2way_inATM3/1/1.99 UP up done UpAndNormal Active 2way_inATM3/1/2 DOWN down waiting n/a Idle n/aATM3/1/3 DOWN down waiting n/a Idle n/aATM-P4/0/0 UP up waiting n/a Idle n/a
CESwitch# configure terminalCESwitch(config)# interface cbr 3/1/0CESwitch(config-if)# shutdownCESwitch(config-if)# ces aal1 service structuredCESwitch(config-if)# ces circuit 1 timeslots 1CESwitch(config-if)# ces pvc 1 interface atm 0/0/0.1 vpi 1 vci 101
CESwitch(config-if)# ces circuit 2 timeslots 2CESwitch(config-if)# ces pvc 2 interface atm 0/0/0.1 vpi 1 vci 102
CESwitch(config-if)# ces circuit 3 timeslots 3CESwitch(config-if)# ces pvc 3 interface atm 0/0/0.1 vpi 1 vci 103CESwitch(config-if)# no shutdown
Verifying a Hard PVC for Structured CES with a Shaped VP Tunnel

To verify the hard PVC configuration, use the following privileged EXEC commands:

Command

Purpose

show ces circuit

Shows configuration information for the hard PVC.

show ces circuit interface cbr card/subcard/port circuit-id

Shows detailed interface configuration information for the hard PVC.

show atm vp interface atm card/subcard/port vpi

Show detailed interface configuration information for the shaped VP tunnel.

Examples

The following example shows how to display the basic information about the hard PVC shown in Figure 18-4, using the show ces circuit command:
CESwitch# show ces circuit
Interface Circuit Circuit-Type X-interface X-vpi X-vci StatusCBR3/1/0 1 HardPVC ATM0/0/0.1 1 101 DOWNCBR3/1/0 2 HardPVC ATM0/0/0.1 1 102 DOWNCBR3/1/0 3 HardPVC ATM0/0/0.1 1 103 DOWNCBR3/1/3 0 Active SoftVC UNKNOWN 0 0 DOWN

The following example shows how to display detailed information about the hard PVC shown in Figure 18-4, using the show ces circuit interface command:
CESwitch# show ces circuit interface cbr 3/1/0 1Circuit: Name CBR3/1/0:1, Circuit-state ADMIN_UP / oper-state UP Interface CBR3Port Clocking loop-timed, aal1 Clocking Method CESIWF_AAL1_CLOCK_SYNCChannel in use on this port: 1-3Channels used by this circuit: 1Cell-Rate: 172, Bit-Rate 64000cas OFF, cell_header 0x100 (vci = 16)Configured CDV 2000 usecs, Measured CDV unavailableDe-jitter: UnderFlow unavailable, OverFlow unavaliableErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0state: VcLoc, maxQueueDepth 81, startDequeueDepth 64Partial Fill: 47, Structured Data Transfer 1HardPVCsrc: CBR3/1/0 vpi 0, vci 16Dst: ATM0/0/0 vpi 1, vci 101
The following example shows how to display detailed information about the shaped VP tunnel shown in Figure 18-4, using the show atm vp command:
NewLs1010# show atm vp interface atm 0/0/0 1
Interface: ATM0/0/0, Type: oc3suniVPI = 1Status: SHAPED TUNNELTime-since-last-status-change: 13:59:23Connection-type: PVPCast-type: point-to-pointUsage-Parameter-Control (UPC): passWrr weight: 2Number of OAM-configured connections: 0OAM-configuration: disabledOAM-states: Not-applicableThreshold Group: 1, Cells queued: 0Rx cells: 0, Tx cells: 0Tx Clp0:0, Tx Clp1: 0Rx Clp0:0, Rx Clp1: 0Rx Upc Violations:0, Rx cell drops:0Rx Clp0 q full drops:0, Rx Clp1 qthresh drops:0Rx connection-traffic-table-index: 10Rx service-category: CBR (Constant Bit Rate)Rx pcr-clp01: 4000Rx scr-clp01: noneRx mcr-clp01: noneRx cdvt: 1024 (from default for interface)Rx mbs: noneTx connection-traffic-table-index: 10Tx service-category: CBR (Constant Bit Rate)Tx pcr-clp01: 4000Tx scr-clp01: noneTx mcr-clp01: noneTx cdvt: noneTx mbs: none
Configuring a Soft PVC for Structured CES

In a soft PVC, as well as a hard PVC, you configure both ends of the CES circuit. However, a soft PVC typically involves CES modules at opposite edges of an ATM network, so a soft PVC can be set up between any two CES modules anywhere in your network.

The destination address of a soft PVC can point to either of the following:

•Any ATM switch router external ATM port in the network

•A port in any other CES module in the network

For example, to set up a soft PVC involving a local node and a destination node at the opposite edge of the network, you need to determine the CES-IWF ATM address of the port in the destination node to complete a soft PVC setup.

To obtain the destination address for an already configured port in a CES module, log into the remote ATM switch router containing that module. Then use the show ces address command to display all the CES-IWF ATM addresses currently configured for that node.

Note Typically you will configure a soft PVC between CES modules anywhere in your network. For simplicity, this example and the accompanying procedure describe how to create a soft PVC between modules in the same ATM switch router chassis.

This section describes how to configure a soft PVC for structured service based on the following assumptions:

•The source (active) side of the soft PVC is named CBR-PVC-A.

•The destination (passive) side of the soft PVC is named CBR-PVC-B.

•Four time slots (DS0 channels) are configured for the soft PVC, as follows:

–For circuit CBR-PVC-A: DS0 channels 1 to 3 and 7 are used on port CBR 3/0/0.

–For circuit CBR-PVC-B: DS0 channels 10 to 13 are used on port CBR 3/0/3.

•Channel associated signalling (CAS) is not enabled. For information about configuring a soft PVC with CAS, see the "Configuring a Soft PVC for Structured CES" section .

•CES AAL1 service is structured and the clock source is network-derived.

•CES framing is esf and the line code is b8zs.

Figure 18-5 shows an example of a soft PVC configured for structured CES.

Figure 18-5 Soft PVC Configured for Structured CES

Configuring a soft PVC for structured CES is a two-phase process:

• Phase 1—Configuring the Destination (Passive) Side of a Soft PVC

• Phase 2—Configuring the Source (Active) Side of a Soft PVC

Phase 1—Configuring the Destination (Passive) Side of a Soft PVC

To configure a destination (passive) side of a soft PVC for structured CES, follow these steps, beginning in privileged EXEC mode:

Command

Purpose

Step 1

Switch# show ces status

Displays information about the current CBR interfaces

Use this command to choose the destination port.

Step 2

Switch# configure terminal

Switch(config)#

At the privileged EXEC prompt, enters global configuration mode.

Step 3

Switch(config)# interface cbr card/subcard/port

Switch(config-if)#

Selects the physical interface to be configured.

Step 4

Switch(config-if)# shutdown

Disables the interface.

Step 5

Switch(config-if)# ces aal1 service {structured | unstructured}

Configures the CES interface AAL1 service type.

Step 6

Switch(config-if)# ces dsx1 clock source {loop-timed | network-derived}

Configures the clock source.

Step 7

Switch(config-if)# ces dsx1 framing {sf | esf}

Switch(config-if)# ces dsx1 framing {e1_crc_mfCAS_lt | e1_crc_mf_lt | e1_lt | e1_mfCAS_lt}

Configures the CES T1 framing type. The default is esf.

Configures the CES E1 framing type. For CES E1, the default is e1_lt.

Step 8

Switch(config-if)# ces dsx1 linecode {ami | b8zs}

Switch(config-if)# ces dsx1 linecode {ami | hdb3}

Configures the CES T1 line code type.The default is b8zs.

Configures the CES E1 line code type.The default is hdb3.

Step 9

Switch(config-if)# no shutdown

Reenables the interface.

Step 10

Switch(config-if)# ces circuit circuit-id timeslots number

Configures the following CES connection attributes for the circuit:

•Circuit id number.

–For CES T1 structured service,
use 1 through 24.

–For CES E1 structured service,
use 1 through 31.

•Time slots for the circuit for structured service only.

–For CES T1, the range is 1 through 24.

–For CES E1, the range is 1 through 31.

Step 11

Switch(config-if)# ces circuit circuit-id circuit-name name

Configures the CES interface circuit name.

Example

The following example shows how to configure the destination (passive) side of a soft PVC for structured T1 CES, as shown in Figure 18-5:
CESwitch# show ces status
Interface IF Admin Port Channels inName Status Status Type use------------- -------- --------- ----------- -----------CBR3/0/0 UP UP T1CBR3/0/1       UP        UP T1CBR3/0/2       UP        UP          T1CBR3/0/3 UP UP T1
CESwitch# configure terminalCESwitch(config)# interface cbr 3/0/3CESwitch(config-if)# shutdownCESwitch(config-if)# ces aal1 service structuredCESwitch(config-if)# ces dsx1 clock source network-derivedCESwitch(config-if)# ces dsx1 framing esfCESwitch(config-if)# ces dsx1 linecode b8zsCESwitch(config-if)# ces circuit 1 timeslots 10-13CESwitch(config-if)# ces circuit 1 circuit-name CBR-PVC-BCESwitch(config-if)# no shutdown

Phase 2—Configuring the Source (Active) Side of a Soft PVC

To configure the source (active) side of a soft PVC for structured CES, follow these steps, beginning in privileged EXEC mode:

Command

Purpose

Step 1

Switch# show ces address

Shows the CES address for the destination end of the circuit.

Use this command to retrieve the VPI/VCI of the destination port.

Step 2

Switch# configure terminal

Switch(config)#

At the privileged EXEC prompt, enters global configuration mode.

Step 3

Switch(config)# interface cbr card/subcard/port

Switch(config-if)#

Selects the physical interface to be configured.

Step 4

Switch(config-if)# shutdown

Disables the interface.

Step 5

Switch(config-if)# ces circuit circuit-id timeslots number

Configures the following CES connection attributes for the circuit:

•Circuit id number.

–For CES T1 structured service,
use 1 through 24.

–For CES E1 structured service,
use 1 through 31.

Note The 0 circuit identifier is reserved for unstructured service.

•Time slots for the circuit for structured service only.

–For CES T1, the range is 1 through 24.

–For CES E1, the range is 1 through 31.

Step 6

Switch(config-if)# ces circuit circuit-id circuit-name name

Configures the CES interface circuit name.

Step 7

Switch(config-if)# ces pvc circuit-id dest-address remote_atm_address vpi vpi vci vci

Configures the soft PVC to the destination CES-IWF ATM addresses and VPI/VCI of the circuit.

Use the VPI/VCI of the destination port that was retrieved in Step 1.

Step 8

Switch(config-if)# no shutdown

Reenables the interface.

Example

The following example shows how to configure the source (active) side of a soft PVC for structured CES, as shown in Figure 18-5:
CESwitch# show ces addressCES-IWF ATM Address(es):47.0091.8100.0000.00e0.4fac.b401.4000.0c81.803c.10 CBR3/0/3:1 vpi 0 vci 3088
CESwitch# configure terminalCESwitch(config)# interface cbr 3/0/0CESwitch(config-if)# shutdownCESwitch(config-if)# ces circuit 1 timeslots 1-3, 7CESwitch(config-if)# ces circuit 1 circuit-name CBR-PVC-ACESwitch(config-if)# ces pvc 1 dest-address 47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1034.10 vpi 0 vci 16CESwitch(config-if)# no shutdown

If you do not specify the circuit name and logical name parameters in the command line, the system automatically assigns a unique default name in the form CBRx/y/z:# for the circuit being configured. For example, the default name for this particular circuit is CBR3/0/0:1. For structured circuit emulation services, the circuit number sequence always begins at 1 for each port in a CES module.

Verifying a Soft PVC for Structured CES

To verify the soft PVC configured with structured CES, use the following EXEC commands:

Command

Purpose

show ces circuit

Shows the configuration information for the soft PVC.

show ces circuit interface cbr card/subcard/port circuit-id

Shows the detailed interface configuration information for the soft PVC.

Examples

The following example shows the details of the CES circuit (shown in Figure 18-5), using the show ces circuit command:
CESwitch# show ces circuit
Interface Circuit Circuit-Type X-interface X-vpi X-vci StatusCBR3/0/0 1 Active SoftVC ATM-P3/0/3 0 3088 UPCBR3/0/3 1 Passive SoftVC ATM-P3/0/3 0 16 UP

The following example shows the interface details for the source port (CBR 3/0/0) (shown in Figure 18-5), using the show ces circuit interface cbr command:
CESwitch# show ces circuit interface cbr 3/0/0 1Circuit: Name CBR-PVC-A, Circuit-state ADMIN_UP / oper-state UPInterface CBR3/0/0, Circuit_id 1, Port-Type T1, Port-State UPPort Clocking network-derived, aal1 Clocking Method CESIWF_AAL1_CLOCK_SYNCChannel in use on this port: 1-3,7Channels used by this circuit: 1-3,7Cell-Rate: 698, Bit-Rate 256000cas OFF, cell_header 0x100 (vci = 16)Configured CDV 2000 usecs, Measured CDV unavailableDe-jitter: UnderFlow unavailable, OverFlow unavailableErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0state: VcActive, maxQueueDepth 45, startDequeueDepth 28Partial Fill: 47, Structured Data Transfer 98Active SoftVCSrc: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.8030.10 vpi 0, vci 16Dst: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.803c.10

The following example shows the interface details for the destination port (CBR 3/0/3) (shown in Figure 18-5), using the show ces circuit interface cbr command:
CESwitch# show ces circuit interface cbr 3/0/3 1Circuit: Name CBR-PVC-B, Circuit-state ADMIN_UP / oper-state UPInterface CBR3/0/3, Circuit_id 1, Port-Type T1, Port-State UPPort Clocking network-derived, aal1 Clocking Method CESIWF_AAL1_CLOCK_SYNCChannel in use on this port: 10-13Channels used by this circuit: 10-13Cell-Rate: 698, Bit-Rate 256000cas OFF, cell_header 0xC100 (vci = 3088)Configured CDV 2000 usecs, Measured CDV unavailableDe-jitter: UnderFlow unavailable, OverFlow unavailableErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0state: VcActive, maxQueueDepth 45, startDequeueDepth 28Partial Fill: 47, Structured Data Transfer 98Passive SoftVCSrc: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.803c.10 vpi 0, vci 3088Dst: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.8030.00
Configuring a Soft PVC for Structured CES with CAS Enabled

Since the CES T1/E1 port adapter emulates CBR services over ATM networks, it must be able to support channel-associated signalling (CAS) information that is introduced into structured CES circuits by PBXs and TDMs. An optional CAS feature for the CES T1/E1 port adapter meets this requirement.

CAS information carried in a CBR bit stream can be configured with a CES module, as follows:

•The optional CAS feature is not enabled (the default state). For information about configuring a soft PVC for structured CES without CAS enabled, see the Configuring a Soft PVC for Structured CES.

•The optional CAS feature is enabled, but without the optional, Cisco-proprietary on-hook detection feature enabled. This option is described in the following procedure.

•Both the optional CAS and on-hook detection features are enabled. For information about configuring a soft permanent virtual channel (soft PVC) for structured CES with both CAS and on-hook detection enabled, see the "Configuring a Soft PVC for Structured CES with CAS and On-Hook Detection Enabled" section .

Note For a detailed description of CAS operation and the on-hook detection feature, refer to the circuit emulation services topic in the Guide to ATM Technology.

This section describes how to configure a soft PVC for structured CES with channel-associated signalling (CAS) enabled.

Note Typically you will configure a soft PVC between CES modules anywhere in your network. For simplicity, this example and the accompanying procedure describe how to create a soft PVC between modules in the same ATM switch router chassis.

The following procedure is based on the following assumptions:

•The source (active) side of the soft PVC (CBR-PVC-A) remains as previously configured.

•The destination (passive) side of the soft PVC (CBR-PVC-B) remains as previously configured.

•Four time slots (DS0 channels) remain as previously configured for the soft PVC:

–For circuit CBR-PVC-A: DS0 channels 1 to 3 and 7 are used on port CBR3/0/0.

–For circuit CBR-PVC-B: DS0 channels 10 to 13 are used on port CBR3/0/3.

•CAS is enabled for the circuit.

•The signalling mode for the T1 CBR ports is set to "robbedbit."

Figure 18-6 shows a soft PVC configured for structured CES with CAS enabled.

Figure 18-6 Soft PVC Configured for Structured CES with CAS Enabled

To configure a soft PVC for structured CES with CAS enabled, follow these steps, beginning in privileged EXEC mode:

Command

Purpose

Step 1

Switch# show ces status

Displays information about the current CBR interfaces.

Use this command to choose the ports to be configured with CAS enabled.

Step 2

Switch# configure terminal

Switch(config)#

At the privileged EXEC mode prompt, enters global configuration mode.

Step 3

Switch(config)# interface cbr card/subcard/port

Switch(config-if)#

Selects the source interface to be configured.

Step 4

Switch(config-if)# no shutdown

Reenables the interface.

Step 5

Switch(config-if)# ces dsx1 signalmode robbedbit

Configures the signal mode to robbedbit (CES T1 only).

Step 6

Switch(config-if)# ces circuit circuit-id cas

Enables channel-associated signalling.

Step 7

Switch(config-if)# exit

Switch(config)#

Returns to global configuration mode.

Step 8

Switch(config)# interface cbr card/subcard/port

Switch(config-if)#

Selects the destination interface to be configured.

Step 9

Switch(config-if)# shutdown

Disables the interface.

Step 10

Switch(config-if)# ces dsx1 signalmode robbedbit

Configures the signal mode to robbedbit (CES T1 only).

Step 11

Switch(config-if)# ces circuit circuit-id cas

Enables channel-associated signalling.

Step 12

Switch(config-if)# no shutdown

Reenables the interface.

Example

The following example shows how to enable channel-associated signalling (CAS) on a soft PVC (see Figure 18-6):
CESwitch# show ces status
Interface IF Admin Port Channels inName Status Status Type use------------- -------- --------- ----------- -----------CBR3/0/0 UP UP T1   1-3,7CBR3/0/1 DOWN UP T1CBR3/0/2 DOWN UP T1CBR3/0/3 UP UP T1   10-13
CESwitch# configure terminalCESwitch(config)# interface cbr 3/0/0CESwitch(config-if)# shutdownCESwitch(config-if)# ces dsx1 signalmode robbedbitCESwitch(config-if)# ces circuit 1 casCESwitch(config-if)# no shutdownCESwitch(config-if)# exitCESwitch(config)# interface cbr 3/0/3CESwitch(config-if)# shutdownCESwitch(config-if)# ces dsx1 signalmode robbedbitCESwitch(config-if)# ces circuit 1 casCESwitch(config-if)# no shutdown

Verifying a Soft PVC for Structured CES with CAS Enabled

To verify the soft PVC with structured CES and CAS enabled, use the following EXEC commands:

Command

Purpose

show ces circuit

Shows the configuration information for the soft PVC.

show ces circuit interface cbr card/subcard/port circuit-id

Shows the detailed interface configuration information for the soft PVC.

Examples

The following example displays the details of the CES circuit (shown in Figure 18-6), using the show ces circuit command at the privileged EXEC mode prompt:
CESwitch# show ces circuit
Interface Circuit Circuit-Type X-interface X-vpi X-vci StatusCBR3/0/0 0 Active SoftVC ATM-P3/0/3 0        16 UPCBR3/0/1    0 Passive SoftVC ATM-P3/0/3 0      1040 UP

The following example displays the CAS status for the source port CBR 3/0/0 (shown in Figure 18-6):
CESwitch# show ces circuit interface cbr 3/0/0 1Circuit: Name CBR-PVC-A, Circuit-state ADMIN_UP / oper-state UPInterface CBR3/0/0, Circuit_id 1, Port-Type T1, Port-State UPPort Clocking network-derived, aal1 Clocking Method CESIWF_AAL1_CLOCK_SYNCChannel in use on this port: 1-3,7Channels used by this circuit: 1-3,7Cell-Rate: 698, Bit-Rate 256000cas ON, cell_header 0x100 (vci = 16)Configured CDV 2000 usecs, Measured CDV unavailableDe-jitter: UnderFlow unavailable, OverFlow unavailableErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0state: VcActive, maxQueueDepth 45, startDequeueDepth 28Partial Fill: 47, Structured Data Transfer 98Active SoftVCSrc: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.8030.10 vpi 0, vci 16Dst: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.803c.10

The following example displays the CAS status for the destination port CBR 3/0/3 (shown in Figure 18-6):
CESwitch# show ces circuit interface cbr 3/0/3 1Circuit: Name CBR-PVC-B, Circuit-state ADMIN_UP / oper-state UPInterface CBR3/0/3, Circuit_id 1, Port-Type T1, Port-State UPPort Clocking network-derived, aal1 Clocking Method CESIWF_AAL1_CLOCK_SYNCChannel in use on this port: 10-13Channels used by this circuit: 10-13Cell-Rate: 698, Bit-Rate 256000cas ON, cell_header 0xC100 (vci = 3088)Configured CDV 2000 usecs, Measured CDV unavailableDe-jitter: UnderFlow unavailable, OverFlow unavailableErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0state: VcActive, maxQueueDepth 45, startDequeueDepth 28Partial Fill: 47, Structured Data Transfer 98Passive SoftVCSrc: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.803c.10 vpi 0, vci 3088Dst: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.8030.00

Configuring a Soft PVC for Structured CES with CAS and On-Hook Detection Enabled

This section outlines the additional steps that you must take to activate the on-hook detection (bandwidth-release) feature in a 1 x 64 structured CES circuit.

To configure a soft PVC for structured CES with CAS and on-hook detection enabled, follow these steps, beginning in global configuration mode:

Command

Purpose

Step 1

Switch(config)# interface cbr card/subcard/port

Switch(config-if)#

Selects the physical interface to be configured.

Step 2

Switch(config-if)# shutdown

Disables the interface.

Step 3

Switch(config-if)# ces circuit circuit-id [cas]
[on-hook-detect pattern]

Configures channel-associated signalling and on-hook detection on the CES circuit.

Step 4

Switch(config-if)# no shutdown

Reenables the interface.

Example

The following example shows how to configure on-hook detection on the soft PVC with structured CES and CAS enabled in the "Configuring a Soft PVC for Structured CES with CAS Enabled" section (shown in Figure 18-6):
CESwitch(config)# interface cbr 3/0/0CESwitch(config-if)# shutdownCESwitch(config-if)# ces circuit 1 cas on-hook-detect 2CESwitch(config-if)# no shutdown

Note The four ABCD bits in the CAS mechanism are device-specific, depending on the manufacturer of the voice/video telephony device that generates the CBR traffic. The ABCD bits of the CAS mechanism are user-configurable.

Verifying a Soft PVC for Structured CES with CAS and On-Hook Detection Enabled

To show the on-hook detection configuration of a soft PVC configured with structured CES and CAS enabled, use the following EXEC command:

Command

Purpose

show ces circuit interface cbr card/subcard/port circuit-id

Shows the detailed interface configuration information for the soft PVC.

Example

The following example shows the soft PVC with CAS and on-hook detection enabled as hexadecimal number 2 (shown in Figure 18-6):
CESwitch# show ces circuit interface cbr 3/0/3 1Circuit: Name CBR-PVC-B, Circuit-state ADMIN_UP / oper-state UPInterface CBR3/0/3, Circuit_id 1, Port-Type T1, Port-State UPPort Clocking network-derived, aal1 Clocking Method CESIWF_AAL1_CLOCK_SYNCChannel in use on this port: 10-13Channels used by this circuit: 10-13Cell-Rate: 698, Bit-Rate 256000cas ON, cell_header 0xC100 (vci = 3088)Configured CDV 2000 usecs, Measured CDV unavailableDe-jitter: UnderFlow unavailable, OverFlow unavailableErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x2state: VcActive, maxQueueDepth 45, startDequeueDepth 28Partial Fill: 47, Structured Data Transfer 98Passive SoftVCSrc: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.803c.10 vpi 0, vci 3088Dst: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.8030.00

Creating Multiple Structured Soft PVCs on the Same CES Port

This section describes how to create more than one structured soft permanent virtual channel (soft PVC) on the same CES T1/E1 port. Figure 18-7 shows how you can configure multiple CES circuits on a single T1/E1 port.

Note Typically you will configure a soft PVC between CES modules anywhere in your network. For simplicity, this example and the accompanying procedure describe how to create a soft PVC between modules in the same ATM switch router chassis.

Assume that certain configuration information has already been established for a soft PVC (see Figure 18-6) and that you are to create an additional soft PVC involving the same CES module.

The following assumptions apply to creating multiple soft PVCs on the same T1/E1 port (see Figure 18-7):

•The source (active) side of a soft PVC named CBR-PVC-A is already created on port CBR 3/0/0.

•The destination (passive) side of a soft PVC named CBR-PVC-B is already created on port CBR 3/0/3.

•A new source (active) side of a soft PVC named CBR-PVC-AC will be created on port CBR 3/0/0 of the CES module, thereby creating a multiple CES circuit on this particular port.

•A new destination (passive) side of a soft PVC named CBR-PVC-CA will be created on port CBR 3/0/2 of the CES module.

•The CES AAL1 service is structured and the clock source is network-derived.

•The CES framing is esf and the line code is b8zs.

Figure 18-7 Configuring Multiple Structured Soft PVCs on the Same CES T1/E1 Port

Configuring multiple soft PVCs for structured CES is a two-phase process:

• Phase 1—Configuring the Destination (Passive) Side of Multiple Soft PVCs

• Phase 2—Configuring the Source (Active) Side of Multiple Soft PVCs

Phase 1—Configuring the Destination (Passive) Side of Multiple Soft PVCs

To configure multiple soft PVCs on the destination (passive) side of the same port, follow these steps, beginning in global configuration mode:

Command

Purpose

Step 1

Switch(config)# interface cbr card/subcard/port

Switch(config-if)#

Selects the physical interface to be configured.

Step 2

Switch(config-if)# shutdown

Disables the interface.

Step 3

Switch(config-if)# ces aal1 service {structured | unstructured}

Configures the CES interface AAL1 service type.

Step 4

Switch(config-if)# ces dsx1 clock source {loop-timed | network-derived}

Configures the clock source.

Step 5

Switch(config-if)# ces dsx1 framing {sf | esf}

Switch(config-if)# ces dsx1 framing {e1_crc_mfCAS_lt | e1_crc_mf_lt | e1_lt | e1_mfCAS_lt}

Configures the CES T1 framing type. The default is esf.

Configures the CES E1 framing type. The default is e1_lt.

Step 6

Switch(config-if)# ces dsx1 linecode {ami | b8zs}

Switch(config-if)# ces dsx1 linecode {ami | hdb3}

Configures the CES T1 line code type.The default is b8zs.

Configures the CES E1 line code type.The default is hdb3

Step 7

Switch(config-if)# ces circuit circuit-id [circuit-name name] [timeslots number]

Configures the following CES connection attributes for the circuit:

•Circuit id number.

–For CES T1 structured service,
use 1 through 24.

–For CES E1 structured service,
use 1 through 31.

Note The 0 circuit identifier is reserved for unstructured service.

•Configures the CES interface circuit name.

•Configures the time slots for the circuit for structured service only.

–For CES T1, the range is 1 through 24.

–For CES E1, the range is 1 through 31.

Step 8

Switch(config-if)# no shutdown

Reenables the interface.

Example

The following example shows how to configure multiple soft PVCs on the destination (passive) side of the same port (shown in Figure 18-7):
CESwitch(config)# interface cbr 3/0/2CESwitch(config-if)# shutdownCESwitch(config-if)# ces aal1 service structuredCESwitch(config-if)# ces dsx1 clock source network-derivedCESwitch(config-if)# ces dsx1 framing esfCESwitch(config-if)# ces dsx1 linecode b8zsCESwitch(config-if)# ces circuit 2 timeslots 24 circuit-name CBR-PVC-CACESwitch(config-if)# no shutdown

Note If you do not specify the circuit name and logical name parameters in the command line, the system automatically assigns a unique default name in the form CBRx/y/z:# for the circuit being configured. For example, the default name for this particular circuit is CBR3/0/2:1. For structured circuit emulation services, the circuit number sequence always begins at 1 for each port in a CES module.

Phase 2—Configuring the Source (Active) Side of Multiple Soft PVCs

To configure multiple soft PVCs on the source (active) side of the same port, follow these steps, beginning in global configuration mode:

Command

Purpose

Step 1

Switch(config)# interface cbr card/subcard/port

Switch(config-if)#

Selects the source interface to be configured.

Step 2

Switch(config-if)# shutdown

Disables the interface.

Step 3

Switch(config-if)# ces circuit circuit-id [circuit-name name] [timeslots number]

Configures the following CES connection attributes for the circuit:

•Circuit id number.

–For CES T1 structured service,
use 1 through 24.

–For CES E1 structured service,
use 1 through 31.

•Configures the CES interface circuit name.

•Configures the time slots for the circuit for structured service only.

–For CES T1, the range is 1 through 24.

–For CES E1, the range is 1 through 31.

Step 4

Switch(config-if)# no shutdown

Reenables the interface.

Step 5

Switch(config-if)# end

Switch#

Exits interface configuration mode.

Step 6

Switch# show ces address

Shows the CES address for the destination end of the circuit.

Use this command to retrieve the VPI/VCI of the destination port.

Step 7

Switch# configure terminal

Switch(config)#

At the privileged EXEC prompt, enters configuration mode.

Step 8

Switch(config)# interface cbr card/subcard/port

Switch(config-if)#

Selects the destination interface to be configured.

Step 9

Switch(config-if)# shutdown

Disables the interface.

Step 10

Switch(config-if)# ces pvc circuit-id dest-address remote_atm_address
vpi vpi vci vci

Configures the soft PVC to the destination CES-IWF ATM addresses and VPI/VCI of the circuit.

Use the VPI/VCI of the destination port that was retrieved in Step 4.

Step 11

Switch(config-if)# no shutdown

Reenables the interface.

Example

The following example shows how to configure multiple soft PVCs on the source (active) side of the same port (shown in Figure 18-7):
CESwitch(config)# interface cbr 3/0/0CESwitch(config-if)# shutdownCESwitch(config-if)# ces circuit 2 timeslots 24CESwitch(config-if)# ces circuit 2 circuit-name CBR-PVC-ACCESwitch(config-if)# no shutdownCESwitch(config-if)# endCESwitch# show ces address
CES-IWF ATM Address(es):47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1030.10 CBR-PVC-A47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1030.20 CBR-PVC-AC47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1034.10 CBR-PVC-B47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1038.10 CBR-PVC-CA
CESwitch# configure terminalCESwitch(config)# interface cbr 3/0/2CESwitch(config-if)# shutdownCESwitch(config-if)# ces pvc 2 dest-address47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1038.10 vpi 0 vci 2064CESwitch(config-if)# no shutdown

If you do not specify the circuit name and logical name parameters in the command line, the system automatically assigns a unique default name in the form CBRx/y/z:# for the circuit being configured. For example, the default name for this particular circuit is CBR3/0/2:1. For structured circuit emulation services, the circuit number sequence always begins at 1 for each port in a CES module.

Verifying the Creation of Multiple Structured Soft PVCs on the Same CES Port

To verify multiple structured soft PVCs with CAS enabled, use the following EXEC commands:

Command

Purpose

show ces circuit

Shows the configuration information for the soft PVC.

show ces address

Shows the CES address for the destination end of the circuit.

show ces circuit interface cbr card/subcard/port circuit-id

Shows the detailed interface configuration information for the soft PVC.

Examples

The following example displays the circuit details for the soft PVCs that you created in the previous procedure (shown in Figure 18-7) using the show ces circuit command in privileged EXEC mode:
CESwitch# show ces circuitInterface Circuit Circuit-Type X-interface X-vpi X-vci StatusCBR3/0/0 1 Active SoftVC ATM-P3/0/3 0 3088 UPCBR3/0/0 2 Active SoftVC ATM-P3/0/3 0 2080 UPCBR3/0/2 2 Passive SoftVC ATM-P3/0/3 0 32 UPCBR3/0/3 1 Passive SoftVC ATM-P3/0/3 0 16 UP

The following example displays the CES-IWF addresses of the soft PVCs that you configured (shown in Figure 18-7), using the show ces address command in privileged EXEC mode:
CESwitch# show ces addressCES-IWF ATM Address(es):47.0091.8100.0000.00e0.4fac.b401.4000.0c81.8030.10 CBR3/0/0:1 vpi 0 vci 1647.0091.8100.0000.00e0.4fac.b401.4000.0c81.8030.20 CBR3/0/0:2 vpi 0 vci 3247.0091.8100.0000.00e0.4fac.b401.4000.0c81.8038.20 CBR3/0/2:2 vpi 0 vci 208047.0091.8100.0000.00e0.4fac.b401.4000.0c81.803c.10 CBR3/0/3:1 vpi 0 vci 3088

The following example displays the interface details for the new circuit 2 soft PVC that you set up on port CBR 3/0/0 (shown in Figure 18-7), using the show ces circuit interface cbr command:
CESwitch# show ces circuit interface cbr 3/0/0 2Circuit: Name CBR-PVC-AC, Circuit-state ADMIN_UP / oper-state UPInterface CBR3/0/0, Circuit_id 2, Port-Type T1, Port-State UPPort Clocking network-derived, aal1 Clocking Method CESIWF_AAL1_CLOCK_SYNCChannel in use on this port: 24Channels used by this circuit: 24Cell-Rate: 172, Bit-Rate 64000cas OFF, cell_header 0x200 (vci = 32)Configured CDV 2000 usecs, Measured CDV unavailableDe-jitter: UnderFlow unavailable, OverFlow unavailableErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0state: VcActive, maxQueueDepth 81, startDequeueDepth 64Partial Fill: 47, Structured Data Transfer 1Active SoftVCSrc: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.8030.20 vpi 0, vci 32Dst: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.8038.20

The following example displays the interface details for the new circuit 1 soft PVC that you configured on port CBR3/0/2 (shown in Figure 18-7), using the show ces circuit interface cbr command:
CESwitch# show ces circuit interface cbr 3/0/2 2Circuit: Name CBR-PVC-CA, Circuit-state ADMIN_UP / oper-state UPInterface CBR3/0/2, Circuit_id 2, Port-Type T1, Port-State UPPort Clocking network-derived, aal1 Clocking Method CESIWF_AAL1_CLOCK_SYNCChannel in use on this port: 24Channels used by this circuit: 24Cell-Rate: 172, Bit-Rate 64000cas OFF, cell_header 0x8200 (vci = 2080)Configured CDV 2000 usecs, Measured CDV unavailableDe-jitter: UnderFlow unavailable, OverFlow unavailableErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0state: VcActive, maxQueueDepth 81, startDequeueDepth 64Partial Fill: 47, Structured Data Transfer 1Passive SoftVCSrc: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.8038.20 vpi 0, vci 2080Dst: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.8030.00
Reconfiguring a Previously Established Circuit

Once you have configured a circuit, you cannot change the circuit's configuration while the circuit is up. You must first bring the interface down. Then you can change the circuit configuration. After entering these configuration changes, you must bring the interface back up. To change an enabled circuit's configuration, follow these steps, beginning in global configuration mode:

Command

Purpose

Step 1

Switch(config)# interface cbr card/subcard/port

Switch(config-if)#

Selects the physical interface to be configured.

Step 2

Switch(config-if)# shutdown

Disables the CES interface.

Step 3

For example, to specify the clock source as network-derived and to change the AAL1 clocking mode from adaptive to synchronous, enter:

Switch(config-if)# ces dsx1 clock source network-derived

Switch(config-if)# ces aal1 clock synchronous

Configures the clock source as network-derived and reconfigures the AAL1 clock mode to synchronous.

Step 4

Switch(config-if)# no shutdown

Enables the CES interface.

Step 5

Switch(config-if)# end

Switch#

Exits interface configuration mode and returns to privileged EXEC mode.

Step 6

Switch# show ces circuit interface cbr card/subcard/port circuit-id

Shows detailed interface configuration information for the circuit.

Use this command to verify your configuration changes.

Note The no ces circuit circuit-id shutdown command deletes the circuit. If you use this command, you must reenter all of the configuration information for the circuit. Do not use this command unless you intend to delete the circuit.

Examples

The following example disables interface cbr 3/0/0, specifies the clock source as network-derived, changes the AAL1 clocking method to synchronous, and reenables the interface.
CESwitch(config)# interface cbr 3/0/0CESwitch(config-if)# shutdownCESwitch(config-if)# ces dsx1 clock source network-derivedCESwitch(config-if)# ces aal1 clock synchronousCESwitch(config-if)# no shutdown

The following example displays the changed configuration information for the circuit, using the show ces circuit interface cbr command:
CESwitch# show ces circuit interface cbr 3/0/0 0Circuit: Name CBR-PVC-A, Circuit-state ADMIN_UP /Interface CBR3/0/0, Circuit_id 0, Port-Type T1, Port-State UPPort Clocking network-derived, aal1 Clocking Method CESIWF_AAL1_CLOCK_SYNCChannel in use on this port: 1-24Channels used by this circuit: 1-24Cell-Rate: 4107, Bit-Rate 1544000cas OFF, cell_header 0x100 (vci = 16)cdv 2000 usecs, Measured cdv 350 usecsErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0state: VcAlarm, maxQueueDepth 879, startDequeueDepth 491Partial Fill: 47, Structured Data Transfer 0HardPVCsrc: CBR3/0/0 vpi 0, vci 16Dst: ATM0/1/3 vpi 0, vci 100

The output from this command verifies the following configuration information:

•The circuit named CBR-PVC-A is UP.

•The clock source is network-derived.

•The AAL1 clocking method is synchronous.

Deleting a Previously Established Circuit

This section describes how to delete a previously established circuit.

To delete a previously established circuit, follow these steps, beginning in privileged EXEC mode:

Command

Purpose

Step 1

Switch# show ces circuit

Shows the configuration information for the circuit.

Step 2

Switch# configure terminal

Switch(config)#

Enters global configuration mode from the terminal.

Step 3

Switch(config)# interface cbr card/subcard/port

Switch(config-if)#

Selects the physical interface where the circuit is to be deleted.

Step 4

Switch(config-if)# no ces circuit circuit-id

Deletes the CES circuit.

Step 5

Switch(config-if)# exit

Switch(config)#

Exits interface configuration mode and returns to global configuration mode.

Step 6

Switch(config)# interface cbr card/subcard/port

Switch(config-if)#

Selects the other physical interface where the circuit is to be deleted.

Step 7

Switch(config-if)# no ces circuit circuit-id

Deletes the other end of CES circuit.

Example

The following example shows how to delete a previously established circuit:
CESwitch# show ces circuit
Interface   Circuit   Circuit-Type X-interface X-vpi X-vci StatusCBR3/0/0      0         HardPVC       ATM0/0       0      100    UPCBR3/0/3      0         HardPVC       ATM0/0       0      101    UP
CESwitch# configure terminalCESwitch(config)# interface cbr 3/0/0CESwitch(config-if)# no ces circuit 0CESwitch(config-if)# exitCESwitch(config)# interface cbr 3/0/3CESwitch(config-if)# no ces circuit 0
Verifying Deletion of a Previously Established Circuit

To verify the deletion of a previously configured circuit, use the following privileged EXEC commands:

Command

Purpose

show ces circuit

Shows the configuration information for the circuit.

show ces address

Shows the configuration information for any CES addresses.

Examples

The following example displays the configuration of any CES circuits:
CESwitch# show ces circuit

The absence of output verifies that all CES circuits are deleted.

The following example displays the configuration of any CES addresses:
CESwitch# show ces address
CES-IWF ATM Address(es):

The absence of output verifies that all CES circuits are deleted.

Configuring SGCP

The Simple Gateway Control Protocol (SGCP) controls voice-over-IP gateways by an external call control element (called a call-agent). This has been adapted to allow SGCP to control ATM switch router circuit emulation services (CES) circuits (called endpoints in SGCP). The resulting system (call-agents and gateways) allows for the call-agent to engage in common channel signalling (CCS) over a 64-Kbps CES circuit, governing the interconnection of bearer channels on the CES interface. In this system the ATM switch router acts as a voice-over-ATM gateway.

For overview information about configuring the SCGP feature, refer to the Guide to ATM Technology.

Operation

The network operator can globally enable or disable SGCP operation for the switch. By default, SGCP is disabled. When SGCP is enabled, the ATM switch router begins listening on the well-known User Datagram Protocol (UDP) port for SGCP packets. The endpoint ID in an SGCP packet identifies the CES circuit. The CES circuit endpoint can be used by SGCP if the following conditions exist:

•The parent CES interface is enabled, and the LineState field indicates NoAlarm (determined via the show ces interface command).

•The CES circuit is allocated a single time slot.

•The CES circuit is enabled (not shut).

•The CES circuit is not configured as an active soft PVC.

•The CES circuit is not configured as part of a hard PVC.

The following sections describe SGCP configuration tasks:

• Configuring SGCP on the Entire Switch

• Displaying SGCP

• Configuring CES Circuits for SGCP

• Displaying SGCP Endpoints

• Displaying SGCP Connections

• Configuring SGCP Request Handling

• Configuring Call-Agent Address

• Shutting Down SGCP

Configuring SGCP on the Entire Switch

To enable SGCP operations for the entire switch, use the following global configuration command:

Command

Purpose

sgcp

Enables or disables SGCP operations for the entire switch.

Example

The following example shows how to enable SGCP for the entire switch:
Switch(config)# sgcp
Displaying SGCP

To display SGCP configuration, operational state, and a summary of connection activity, use the following privileged EXEC command:

Command

Purpose

show sgcp

Displays the global SGCP configuration.

Example

The following example displays the SGCP configuration:
Switch# show sgcp
SGCP Admin State ACTIVE, Oper State ACTIVESGCP call-agent:none , SGCP graceful-shutdown enabled? FALSESGCP request timeout 2000, SGCP request retries 674 CES endpoint connections created74 CES endpoints in active connections
Configuring CES Circuits for SGCP

Any single time slot (64 Kbps) allocated to a circuit on a CES T1/E1 interface can be configured for SGCP with these restrictions:

•CES is not the active source end of a soft PVC.

•CES is not part of a hard PVC.

Note Configuration on the call-agent can restrict the range of circuits designated for signalling on a CES circuit interface.

When you configure a CES circuit for SGCP, signalling should be given the proper time slot. For T1 CES circuits, a time slot can be given a number from 1 to 24; for E1 CES, a number from 1 to 31.

Although no keyword identifies a CES circuit as allocatable by SGCP, there is normally a simple configuration rule to ensure that signalling allocates the proper time slot:

circuit x is allocated time slot x, 1<=x<=24 (or 31 for E1).

Note The endpoint specifier used by SGCP refers to the CES circuit ID (not the time slot). If a time slot is not allocated to a circuit, that time slot cannot be used by SGCP (or CES, either).

To configure SGCP operation on a CES circuit interface, follow these steps, beginning in global configuration mode:

Command

Purpose

Step 1

Switch(config)# interface cbr card/subcard/port

Switch(config-if)#

Selects the physical interface to be configured.

Step 2

Switch(config-if)# ces aal1 service structured

Configures the AAL1 service type.

Step 3

Switch(config-if)# ces circuit circuit-id
timeslot number

Allocates a time slot number to the circuit identifier.

Example

The following example shows how to configure the CES port for structured CES with all time slots available for SGCP. CES circuit 16 is configured for common channel signalling and specified as a soft permanent virtual channel (soft PVC) to a circuit on the CES port adapter connected to the call-agent.
Switch(config)# interface cbr 1/1/2Switch(config-if)# ces aal1 service structuredSwitch(config-if)# ces circuit 1 timeslot 1Switch(config-if)# ces circuit 2 timeslot 2Switch(config-if)# ces circuit 3 timeslot 3Switch(config-if)# ces circuit 4 timeslot 4Switch(config-if)# ces circuit 5 timeslot 5Switch(config-if)# ces circuit 6 timeslot 6Switch(config-if)# ces circuit 7 timeslot 7Switch(config-if)# ces circuit 8 timeslot 8Switch(config-if)# ces circuit 9 timeslot 9Switch(config-if)# ces circuit 10 timeslot 10Switch(config-if)# ces circuit 11 timeslot 11Switch(config-if)# ces circuit 12 timeslot 12Switch(config-if)# ces circuit 13 timeslot 13Switch(config-if)# ces circuit 14 timeslot 14Switch(config-if)# ces circuit 15 timeslot 15Switch(config-if)# ces circuit 16 timeslot 16Switch(config-if)# ces pvc 16 dest-address47.0091.8100.0000.0060.3e64.fd01.4000.0c80.1038.10 vpi 0 vci 2064Switch(config-if)# ces circuit 17 timeslot 17Switch(config-if)# ces circuit 18 timeslot 18Switch(config-if)# ces circuit 19 timeslot 19Switch(config-if)# ces circuit 20 timeslot 20Switch(config-if)# ces circuit 21 timeslot 21Switch(config-if)# ces circuit 22 timeslot 22Switch(config-if)# ces circuit 23 timeslot 23Switch(config-if)# ces circuit 24 timeslot 24Switch(config-if)# end
Displaying SGCP Endpoints

SGCP endpoints are all the CES circuits that might be eligible for SGCP connections. To display SGCP endpoints, use the following EXEC command:

Command

Purpose

show sgcp endpoint [interface cbr card/subcard/port [circuit-id]]

Displays the SGCP endpoints.

Note SGCP cannot allocate a CES circuit to a connection if it is already part of a hard or soft PVC.

Example

The following example displays the possible SGCP endpoints on CES interface CBR 1/1/0:
Switch> show sgcp endpoint interface cbr 1/1/0
Endpt Timeslots Conn State Call IDCBR1.1.0/1 1 no connectionCBR1.1.0/2 1 no connectionCBR1.1.0/3 1 no connectionCBR1.1.0/4 1 no connectionCBR1.1.0/5 1 no connectionCBR1.1.0/6 1 no connectionCBR1.1.0/7 1 no connectionCBR1.1.0/8 1 no connectionCBR1.1.0/9 1 no connectionCBR1.1.0/10 1 no connectionCBR1.1.0/11 1 activeCBR1.1.0/12 1 no connectionCBR1.1.0/14 1 active 1234abcCBR1.1.0/15 1 active 2234abcCBR1.1.0/16 1 active 3234abcCBR1.1.0/17 1 active 4234abcCBR1.1.0/18 1 active 5234abcCBR1.1.0/19 1 active 6234abcCBR1.1.0/20 1 active 7234abcCBR1.1.0/21 1 active 8234abcCBR1.1.0/22 1 active 9234abcCBR1.1.0/23 1 active a234abcCBR1.1.0/24 1 active b234abc
Displaying SGCP Connections

To display SGCP connections (either globally or per single interface), use the following EXEC command:

Command

Purpose

show sgcp connection [interface cbr card/subcard/port]

Displays the SGCP connections.

Example

The following example displays all SGCP connections created on the ATM switch router:
Switch> show sgcp connection
Conn Endpt Soft VC State Call IdCBR0.0.0/1 Dest- active VC d234abCBR0.0.0/2 Dest- active VC 12345bcCBR0.0.0/3 Dest- active VC 1284abCBR0.0.0/4 Dest- active VC 9234abc
Configuring SGCP Request Handling

When the ATM switch router initiates an SGCP request (for example, to disconnect the circuit), default request timer and request retry values are in operation. To change the default value of SGCP requests, use the global configuration commands, as shown in the following table:

Command

Purpose

sgcp request timeout msecs

Configures the SGCP request timeout value.

sgcp request retries number

Configures the SGCP request retry value.

Examples

The following example shows how to change the request timeout to 2000 milliseconds:
Switch(config)# sgcp request timeout 2000

The following example shows how to change the request retry value to 5:
Switch(config)# sgcp request retries 5
Configuring Call-Agent Address

By default the SGCP call agents perform the following tasks:

•The ATM switch router sends a response to an SGCP request in a UDP packet with the destination address the same as the source address of the request UDP packet.

•To send a DeleteConnection request for a connection that exists, the ATM switch router specifies the destination address of the UDP packet as the source UDP address in the CreateConnection request.

To alter this behavior, and send responses and requests to a specific IP address and UDP port, use the following global configuration command:

Command

Purpose

sgcp call-agent ip-address udp-port

Configures the call-agent IP address and UDP port.

Note If the IP address is specified without the UDP port number, the well-known SGCP port 2427 is used.

Example

The following example shows how to set the call-agent with IP address 133.20.5.122 and
UDP port 12000:
Switch(config)# sgcp call-agent 133.20.5.122 12000
Shutting Down SGCP

When SGCP is disabled with the no sgcp command, active SGCP connections are terminated; however DeleteConnection requests are not sent to the call-agent for these active connections.
To notify call-agent and perform a graceful SGCP shutdown, use the following global configuration command:

Command

Purpose

sgcp graceful-shutdown

Shuts down SGCP and notifies call-agent.

Example

The following example shows how to perform a graceful shutdown:
Switch(config)# sgcp graceful-shutdown

Module	Framing Options and Description	Line Coding Options
CES T1 port adapter	•Super Frame (SF) •Extended Super Frame (ESF)	ami or b8zs (b8zs is the default)
CES E1 port adapter (120-ohm) and CES E1 port adapter (BNC)	•E1 CRC multiframe (e1_crc_mf_lt). Configures the line type to e1_crc_mf, without channel associated signalling (CAS) enabled. •E1 CRC multiframe (e1_crc_mfCAS_lt). Configures the line type to e1_crc_mf, with CAS enabled. •E1 (e1_lt). Configures the line type to e1_lt. •E1 multiframe (e1_mfCAS_lt). Configures the line type to e1_mf, with CAS enabled.	ami or hdb3 (hdb3 is the default)

	Command	Purpose
Step 1	Switch(config)# interface cbr card/subcard/port Switch(config-if)#	Selects the physical interface to be configured and enters global configuration mode.
Step 2	Switch(config-if)# ces aal1 service {structured \| unstructured}	Configures the service type. The default is unstructured.
Step 3	Switch(config-if)# ces aal1 clock {adaptive \| srts \| synchronous}	Configures the type of clocking. Note For structured CES, the default is synchronous.
Step 4	Switch(config-if)# ces circuit circuit-id [cas] [cdv max-req] [circuit-name name] [partial-fill number] [shutdown] [timeslots number] [on-hook-detect pattern]	Configures the following CES connection attributes for the circuit: •Circuit id number. –For unstructured service, use 0. –For CES T1 structured service, use 1 through 24. –For CES E1 structured service, use 1 through 31. •Enables channel-associated signalling for structured service only. The default is no cas. •Enables the peak-to-peak cell delay variation requirement. The default is 2000 milliseconds.
		•Sets the ASCII name for the CES-IWF circuit. The maximum length is 64 characters. The default is CBRx/x/x:0. •Enables the partial AAL1 cell fill service for structured service only. The default is 47. •Disables the circuit. The default is no shutdown. •Configures the time slots for the circuit for structured service only. •Configures on-hook detection.
Step 5	Switch(config-if)# ces dsx1 clock source {loop-timed \| network-derived}	Configures the clock source. The default is network-derived.
Step 6	Switch(config-if)# ces dsx1 framing {sf \| esf} Switch(config-if)# ces dsx1 framing {e1_crc_mfCAS_lt \| e1_crc_mf_lt \| e1_lt \| e1_mfCAS_lt}	Configures CES T1 framing mode. The default is esf. Configures CES E1 framing mode. The default is e1_lt.
Step 7	Switch(config-if)# ces dsx1 lbo {0_110 \| 110_220 \| 220_330 \| 330_440 \| 440_550 \| 550_660 \| 660_above \| square_pulse}	Configures the line build-out. The default is 0_110.
Step 8	Switch(config-if)# ces dsx1 linecode {ami \| b8zs} Switch(config-if)# ces dsx1 linecode {ami \| hdb3}	Configures CES T1 line code type. The default is b8zs. Configures CES E1 line code type. The default is hdb3.
Step 9	Switch(config-if)# ces dsx1 loopback {line \| noloop \| payload}	Configures the loopback test method. The default is noloop.
Step 10	Switch(config-if)# ces dsx1 signalmode robbedbit	Configures the CES T1 signal mode to robbedbit. The default is no.
Step 11	Switch(config-if)# ces pvc circuit-id interface atm card/subcard/port [vpi vpi] vci vci	Configures the destination port for the circuit and configures a hard PVC, as follows: •Specifies the circuit identification. –For unstructured service, use 0. –For T1 structured service, use 1 through 24. –For E1 structured service, use 1 through 31. •Specifies the card/subcard/port number of the ATM interface. •Specifies the virtual path identifier of the destination PVC. •Specifies the virtual channel identifier of the destination PVC.
	Switch(config-if)# ces pvc circuit-id dest-address atm-address [[vpi vpi] vci vci] [retry-interval [first retry-interval] [maximum retry-interval]]	Configures the destination port for the circuit and configures the soft PVC, as follows: •Specifies the circuit identification. –For unstructured service, use 0. –For T1 structured service, use 1 through 24. –For E1 structured service, use 1 through 31. •Specifies the destination address of the soft PVC. •Specifies the virtual path identifier of the destination PVC. •Specifies the virtual channel identifier of the destination PVC. •Configures retry interval timers for a soft PVC, as follows: –Specifies in milliseconds, the retry interval after the first failed attempt. The default is 5,000. Specifies in seconds, the maximum retry interval between any two attempts. The default is 60.

	Command	Purpose
Step 1	Switch# show ces status	Displays information about the current CBR interfaces. Use this command to choose the source CBR port.
Step 2	Switch# show atm status	Displays information about the current ATM interfaces. Use this command to choose the destination ATM port. Note The interface must be up.
Step 3	Switch# configure terminal Switch(config)#	At the privileged EXEC prompt, enters global configuration mode.
Step 4	Switch(config)# interface cbr card/subcard/port Switch(config-if)#	Selects the physical interface to be configured.
Step 5	Switch(config-if)# shutdown	Disables the interface.
Step 6	Switch(config-if)# ces aal1 service {structured \| unstructured}	Configures the CES interface AAL1 service type.
Step 7	Switch(config-if)# ces aal1 clock {adaptive \| srts \| synchronous}	Configures the AAL1 clock mode.
Step 8	Switch(config-if)# ces circuit circuit-id circuit-name name	Configures the CES interface circuit identifier and circuit name. Note For unstructured service, use 0 for the circuit identifier.
Step 9	Switch(config-if)# ces pvc circuit-id interface atm card/subcard/port vpi vpi vci vci	Configures the hard PVC to the ATM interface and VPI/VCI. Note The VPI/VCI are arbitrary here. They are not fixed, whereas the VPI/VCI described in the "General Guidelines for Creating Soft PVCs for Circuit Emulation Services" section are fixed.
Step 10	Switch(config-if)# no shutdown	Reenables the interface.

Command	Purpose
show ces circuit	Shows configuration information for the hard PVC.
show ces circuit interface cbr card/subcard/port circuit-id	Shows detailed interface configuration information for the hard PVC.

	Command	Purpose
Step 1	Switch# show ces status	Displays information about current CBR interfaces. Use this command to choose the destination port.
Step 2	Switch# configure terminal Switch(config)#	At the privileged EXEC prompt, enters global configuration mode.
Step 3	Switch(config)# interface cbr card/subcard/port Switch(config-if)#	Selects the physical interface to be configured.
Step 4	Switch(config-if)# shutdown	Disables the interface.
Step 5	Switch(config-if)# ces aal1 service {structured \| unstructured}	Configures the CES interface AAL1 service type.
Step 6	Switch(config-if)# ces aal1 clock {adaptive \| srts \| synchronous}	Configures the CES interface AAL1 clock mode.
Step 7	Switch(config-if)# ces dsx1 clock source {loop-timed \| network-derived}	Configures the CES interface clock source.
Step 8	Switch(config-if)# ces circuit circuit-id circuit-name name	Configures the CES interface circuit identifier and circuit name. Note For unstructured service, use 0 for the circuit identifier.
Step 9	Switch(config-if)# no shutdown	Reenables the interface.

	Command	Purpose
Step 1	Switch# show ces address	Shows the CES address and VPI/VCI for the destination end of the circuit. Use this command to retrieve the destination's VPI/VCI.
Step 2	Switch# configure terminal Switch(config)#	At the privileged EXEC prompt, enters global configuration mode.
Step 3	Switch(config)# interface cbr card/subcard/port Switch(config-if)#	Selects the physical interface to be configured.
Step 4	Switch(config-if)# shutdown	Disables the interface.
Step 5	Switch(config-if)# ces aal1 service {structured \| unstructured}	Configures the CES interface AAL1 service type.
Step 6	Switch(config-if)# ces aal1 clock {adaptive \| srts \| synchronous}	Configures the CES interface AAL1 clock mode.
Step 7	Switch(config-if)# ces dsx1 clock source {loop-timed \| network-derived}	Configures the CES interface clock source.
Step 8	Switch(config-if)# ces circuit circuit-id circuit-name name	Configures the CES interface circuit identifier and circuit name. Note For unstructured service, use 0 for the circuit identifier.
Step 9	Switch(config-if)# ces pvc circuit-id dest-address remote_atm_address vpi vpi vci vci	Configures the soft PVC to the destination CES-IWF ATM addresses and VPI/VCI of the circuit. Note Use the destination's VPI/VCI, which you retrieved in Step 1.
Step 10	Switch(config-if)# no shutdown	Reenables the interface.

Command	Purpose
show ces circuit	Shows the soft PVC configuration information.
show ces circuit interface cbr card/subcard/port circuit-id	Shows the detailed soft PVC interface configuration information.

Command	Purpose
show ces circuit	Shows the configuration information for the hard PVC.
show ces circuit interface cbr card/subcard/port circuit-id	Shows the detailed interface configuration information for the hard PVC.

	Command	Purpose
Step 1	Switch# show ces address	Shows the CES address for the destination end of the circuit. Use this command to retrieve the VPI/VCI of the destination port.
Step 2	Switch# configure terminal Switch(config)#	At the privileged EXEC prompt, enters global configuration mode.
Step 3	Switch(config)# interface cbr card/subcard/port Switch(config-if)#	Selects the physical interface to be configured.
Step 4	Switch(config-if)# shutdown	Disables the interface.
Step 5	Switch(config-if)# ces circuit circuit-id timeslots number	Configures the following CES connection attributes for the circuit: •Circuit id number. –For CES T1 structured service, use 1 through 24. –For CES E1 structured service, use 1 through 31. Note The 0 circuit identifier is reserved for unstructured service. •Time slots for the circuit for structured service only. –For CES T1, the range is 1 through 24. –For CES E1, the range is 1 through 31.
Step 6	Switch(config-if)# ces circuit circuit-id circuit-name name	Configures the CES interface circuit name.
Step 7	Switch(config-if)# ces pvc circuit-id dest-address remote_atm_address vpi vpi vci vci	Configures the soft PVC to the destination CES-IWF ATM addresses and VPI/VCI of the circuit. Use the VPI/VCI of the destination port that was retrieved in Step 1.
Step 8	Switch(config-if)# no shutdown	Reenables the interface.

	Command	Purpose
Step 1	Switch(config)# interface cbr card/subcard/port Switch(config-if)#	Selects the source interface to be configured.
Step 2	Switch(config-if)# shutdown	Disables the interface.
Step 3	Switch(config-if)# ces circuit circuit-id [circuit-name name] [timeslots number]	Configures the following CES connection attributes for the circuit: •Circuit id number. –For CES T1 structured service, use 1 through 24. –For CES E1 structured service, use 1 through 31. •Configures the CES interface circuit name. •Configures the time slots for the circuit for structured service only. –For CES T1, the range is 1 through 24. –For CES E1, the range is 1 through 31.
Step 4	Switch(config-if)# no shutdown	Reenables the interface.
Step 5	Switch(config-if)# end Switch#	Exits interface configuration mode.
Step 6	Switch# show ces address	Shows the CES address for the destination end of the circuit. Use this command to retrieve the VPI/VCI of the destination port.
Step 7	Switch# configure terminal Switch(config)#	At the privileged EXEC prompt, enters configuration mode.
Step 8	Switch(config)# interface cbr card/subcard/port Switch(config-if)#	Selects the destination interface to be configured.
Step 9	Switch(config-if)# shutdown	Disables the interface.
Step 10	Switch(config-if)# ces pvc circuit-id dest-address remote_atm_address vpi vpi vci vci	Configures the soft PVC to the destination CES-IWF ATM addresses and VPI/VCI of the circuit. Use the VPI/VCI of the destination port that was retrieved in Step 4.
Step 11	Switch(config-if)# no shutdown	Reenables the interface.

Command	Purpose
show ces circuit	Shows the configuration information for the soft PVC.
show ces address	Shows the CES address for the destination end of the circuit.
show ces circuit interface cbr card/subcard/port circuit-id	Shows the detailed interface configuration information for the soft PVC.

	Command	Purpose
Step 1	Switch# show ces circuit	Shows the configuration information for the circuit.
Step 2	Switch# configure terminal Switch(config)#	Enters global configuration mode from the terminal.
Step 3	Switch(config)# interface cbr card/subcard/port Switch(config-if)#	Selects the physical interface where the circuit is to be deleted.
Step 4	Switch(config-if)# no ces circuit circuit-id	Deletes the CES circuit.
Step 5	Switch(config-if)# exit Switch(config)#	Exits interface configuration mode and returns to global configuration mode.
Step 6	Switch(config)# interface cbr card/subcard/port Switch(config-if)#	Selects the other physical interface where the circuit is to be deleted.
Step 7	Switch(config-if)# no ces circuit circuit-id	Deletes the other end of CES circuit.

Command	Purpose
sgcp request timeout msecs	Configures the SGCP request timeout value.
sgcp request retries number	Configures the SGCP request retry value.