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Table Of Contents

Configuring Virtual Connections

Characteristics and Types and of Virtual Connections

Configuring Permanent Virtual Channel Connections

Configuring Terminating PVC Connections

Configuring Permanent Virtual Path Connections

Configuring Soft PVC Connections

Guidelines for Creating Soft PVCs

Configuring Soft Permanent Virtual Channels

Configuring Soft PVP Connections

Configuring Non-Default Well-Known PVCs

Overview of Non-Default PVC Configuration

Configuring Non-Default PVCs


Configuring Virtual Connections

This chapter describes how to configure virtual connections (VCs) in a typical ATM network after autoconfiguration has established the default network connections. The network configuration modifications described in this chapter are used to optimize your ATM network operation.

Characteristics and Types and of Virtual Connections

The characteristics of the VC, established when the VC is created, include:

•Quality of service (QoS)

•ATM adaption layer 5 (AAL5)

•Peak and average transmission rates

•Cell sequencing integrity

These switching features can be turned off with interface configuration commands; autonomous switching must be explicitly enabled per interface. SVC connection setup is possible both on trunk/subtended interfaces as well as all subscriber ports.

The total number of SVCs supported is approximately 24k. The total number of PVCs supported is approximately 5k (constrained by Flash size). The call rate is two hundred calls per second.

Table 5-1 lists the types of supported virtual connections.

Table 5-1 Supported DSLAM Virtual Connection Types

Connection
Point-to-
Point
Transit
Terminate

Permanent virtual channel link (PVCL)

3

—

—

Permanent virtual path link (PVPL)

3

—

—

Permanent virtual channel (PVC)

3

3

3

Permanent virtual path (PVP)

3

3

—

Soft permanent virtual channel (Soft PVC)

3

3

—

Soft permanent virtual path (Soft PVP)

3

3

—

Switched virtual circuit (SVC)

3

3

3

Switched virtual path (SVP)

3

3

—


Configuring Permanent Virtual Channel Connections

This section describes how to configure DSLAM VCCs. A VCC is established as a bidirectional facility to transfer ATM traffic between two ATM layer users. Figure 5-1 shows an example VCC between ATM user A and user D.

Figure 5-1 Virtual Channel Connection Example

Note The value of the VPIs and VCIs can change as the traffic is relayed through the ATM network.

To configure a point-to-point VCC, perform these steps, beginning in global configuration mode:

Step
Command
Task

1.

interface atm slot/port[.sub-inter#]

Select the interface to be configured.

2.

atm pvc vpi [vci | any-vci1 ] [upc upc] [pd pd2 ] [rx-cttr index] [tx-cttr index] interface atmslot/port[.vpt#] vpi [vci | any-vci] [upc upc]

Configure the PVC.

1 The any-vci parameter is only available for ATM interface0/0.

2 The parameter pd is not applicable to a virtual path.


Note You must configure the row index for rx-cttr and tx-cttr before you use this optional parameter. See Chapter 9, "Configuring Resource Management."

Note When you configure PVC connections, configure the lowest VPI and VCI numbers first.

Examples

This example shows how to configure the internal cross-connect PVC on DSLAM B between interface 0/1, VPI = 0, VCI = 50 and interface 0/2, VPI = 2, VCI = 100 (see Figure 5-1):

DSLAM-B(config)# interface atm 0/1
DSLAM-B(config-if)# atm pvc 0 50 interface atm 0/2 2 100

This example shows how to configure the internal cross-connect PVC on DSLAM C between interface 1/0, VPI = 2, VCI = 100 and interface0/1, VPI 50, VCI = 255:

DSLAM-C(config)# interface atm 1/0
DSLAM-C(config-if)# atm pvc 2 100 interface atm 0/1 50 255

Each subsequent VC cross-connection and link must be configured until the VC is terminated to create the entire VCC.

This example shows how to configure the CPU leg of any terminating PVC:

DSLAM(config)# interface atm0/0
DSLAM(config-if)# atm pvc 0 ?
<32-16383> vci
any-vci Choose any available vci

DSLAM(config-if)# atm pvc 0 any-vci
DSLAM(config-if)#

When configuring the CPU leg of a PVC that is not a tunnel, the VPI should be configured as 0. The preferred method of VCI configuration is to select the any-vci parameter, unless a specific VCI is needed as a parameter in another command, such as map-list.

Note If configuring a specific VCI value for the CPU leg, select a VCI value higher than 300. This step prevents a conflict with an automatically assigned VCI for well-known channels if the DSLAM reboots.

To show the VC configuration, use these EXEC commands:

Step
Command
Task

1.

show atm interface [atm slot/port]

Show the ATM interface configuration.

2.

show atm vc [interface atm slot/port vpi vci]

Show the PVC interface configuration.


Examples

This example displays the DSLAM B PVC configuration on ATM interface 0/2:

DSLAM-B# show atm interface 0/2
Interface: ATM0/2          Port-type: suni-dual
IF Status: UP Admin Status: up
Auto-config: enabled AutoCfgState: completed
IF-Side: Network IF-type: NNI
Uni-type: not applicable Uni-version: not applicable
Max-VPI-bits: 8 Max-VCI-bits: 14
Max-VP: 255 Max-VC: 16383
Svc Upc Intent: pass Signalling: Enabled
ATM Address for Soft VC: 47.0091.8100.0000.0001.0000.0001.4000.0c81.8010.00
Configured virtual links:
PVCLs SoftVCLs SVCLs PVPLs SoftVPLs SVPLs Total-Cfgd Installed-Conns
5 0 0 0 0 0 5 5
Logical ports(VP-tunnels): 0
Input cells: 527452 Output cells: 527485
5 minute input rate: 0 bits/sec, 0 cells/sec
5 minute output rate: 0 bits/sec, 0 cells/sec
Input AAL5 pkts: 344372, Output AAL5 pkts: 344384, AAL5 crc errors: 0


This example displays the DSLAM B PVC configuration on ATM interface 0/2:

DSLAM-B# show atm vc interface atm 0/2
Interface VPI VCI Type X-Interface X-VPI X-VCI Encap Status
ATM0/2 0 5 PVC ATM0/0 0 57 QSAAL UP
ATM0/2 0 16 PVC ATM0/0 0 37 ILMI UP
ATM0/2 0 18 PVC ATM0/0 0 73 PNNI UP
ATM0/2 0 50 PVC ATM0/0     2 100 UP
ATM0/2 1 50 PVC ATM0/0 0 80 SNAP UP

This example displays the DSLAM B configuration on interface 0/1, VPI = 0, VCI = 50:

DSLAM-B# show atm vc interface atm 0/1 0 50

Interface: ATM0/1, Type: suni-dual
VPI = 0 VCI = 50
Status: UP
Time-since-last-status-change: 00:31:30
Connection-type: PVC
Cast-type: point-to-point
Packet-discard-option: disabled
Usage-Parameter-Control (UPC): pass
Number of OAM-configured connections: 0
OAM-configuration: disabled
OAM-states: Not-applicable
Cross-connect-interface: ATM0/2, Type: suni-dual
Cross-connect-VPI = 2
Cross-connect-VCI = 100
Cross-connect-UPC: pass
Cross-connect OAM-configuration: disabled
Cross-connect OAM-state: Not-applicable
Rx cells: 0, Tx cells: 0
Rx connection-traffic-table-index: 1
Rx service-category: UBR (Unspecified Bit Rate)
Rx pcr-clp01: 7113539
Rx scr-clp01: none
Rx mcr-clp01: none
Rx cdvt: 1024 (from default for interface)
Rx mbs: none
Tx connection-traffic-table-index: 1
Tx service-category: UBR (Unspecified Bit Rate)
Tx pcr-clp01: 7113539
Tx scr-clp01: none
Tx mcr-clp01: none
Tx cdvt: none
Tx mbs: none

This example displays the DSLAM B PVC configuration on ATM interface 0/2, VPI = 0, VCI = 50:

DSLAM-B# show atm vc interface atm 0/2 0 50

Interface: ATM0/2, Type: suni-dual
VPI = 0 VCI = 50
Status: UP
Time-since-last-status-change: 4d02h
Connection-type: PVC
Cast-type: point-to-point
Packet-discard-option: disabled
Usage-Parameter-Control (UPC): pass
Wrr weight: 32
Number of OAM-configured connections: 0
OAM-configuration: disabled
OAM-states: Not-applicable
Cross-connect-interface: ATM0/1, Type: suni-dual
Cross-connect-VPI = 2
Cross-connect-VCI = 100
Cross-connect-UPC: pass
Cross-connect OAM-configuration: disabled
Cross-connect OAM-state: Not-applicable
Threshold Group: 5, Cells queued: 0
Rx cells: 0, Tx cells: 0
Tx Clp0:0, Tx Clp1: 0
Rx Clp0:0, Rx Clp1: 0
Rx Upc Violations:0, Rx cell drops:0
Rx Clp0 q full drops:0, Rx Clp1 qthresh drops:0
Rx connection-traffic-table-index: 1
Rx service-category: UBR (Unspecified Bit Rate)
Rx pcr-clp01: 7113539
Rx scr-clp01: none
Rx mcr-clp01: none
Rx cdvt: 1024 (from default for interface)
Rx mbs: none
Tx connection-traffic-table-index: 1
Tx service-category: UBR (Unspecified Bit Rate)
Tx pcr-clp01: 7113539
Tx scr-clp01: none
Tx mcr-clp01: none
Tx cdvt: none
Tx mbs: none

Configuring Terminating PVC Connections

This section describes how to configure point-to-point terminating PVC connections. Terminating connections provide the connection to the DSLAM CPU for control channels for Interim Local Management Interface (ILMI), signaling, and Private Network-to-Network Interface (PNNI) plus network management.

Figure 5-2 shows an example of transit and terminating connections.

Figure 5-2 Virtual Connection Types Example

Point-to-point is a type of terminating connection. Terminating connections are configured using the same commands as transit connections (discussed in the previous sections). However, all switch terminating connections use interface 0/0 to connect to the switch CPU.

To configure point-to-point terminating PVC connections, perform these steps, beginning in global configuration mode:

Step
Command
Task

1.

interface atm slot-A/port-A[.vpt#]

Select the interface to be configured.

2.

atm pvc vpi-A [vci-A | any-vci1 ] [cast-type p2mp-leaf p2mp-root p2p] [upc upc-A] [pd pd] [rx-cttr index] [tx-cttr index] interface atm slot-B/subslot-B/port-B[.vpt#] vpi-B [vci-A | any-vci] [upc upc-B] [cast-type p2mp-leaf | p2mp-root | p2p]

Configure the PVC between ATM switch connections.

1 The any-vci feature is only available for interface ATM 0/0.


Note You must configure the row index for rx-cttr and tx-cttr before you use this optional parameter. See Chapter 9, "Configuring Resource Management."

Examples

This example shows how to configure the CPU leg of any terminating PVC:

DSLAM(config)# interface atm0/0
DSLAM(config-if)# atm pvc 0 ?
<32-16383> vci
any-vci Choose any available vci

DSLAM(config-if)# atm pvc 0 any-vci

When configuring the CPU leg of a PVC that is not a tunnel, the VPI should be configured as 0. The preferred method of VCI configuration is to select the any-vci parameter, unless a specific VCI is needed as a parameter in another command, such as map-list.

Note If you configure a specific VCI value for the CPU leg, select a VCI value greater than 300 to prevent a conflict with an automatically assigned VCI for well-known channels if the DSLAM reboots.

This example shows how to configure the internal cross-connect PVC between interface 0/2, VPI = 1, VCI = 50 and the terminating connection at the CPU interface 0/0, VPI = 0, and VCI unspecified:

DSLAM-B(config)# interface atm 0/2
DSLAM-B(config-if)# atm pvc 1 50 interface atm0/0 0 any-vci encap aal5snap

To show the terminating PVC configuration, use the EXEC commands:

Step
Command
Task

1.

show atm vc slot/port

Show the ATM interface configuration.

2.

show atm vc interface atm slot/port vpi vci

Show the PVC interface configuration.


Configuring Permanent Virtual Path Connections

This section describes how to configure a PVP connection. Figure 5-3 shows an example of a DSLAM with PVPs configured through the switch. Switch B and Switch C can be either ATM switches or DSLAMs.

Figure 5-3 Virtual Path Connection Example

To configure a PVP connection, perform these steps, beginning in global configuration mode:

Step
Command
Task

1.

interface atm slot/port

Select the physical interface to be configured.

2.

atm pvp vpi [cast-type type] [upc upc] [rx-cttr index] [shaped] [tx-cttr index] interface slot/port

Configure the interface PVP.


Note You must configure the row index for rx-cttr and tx-cttr before you use this optional parameter. See Chapter 9, "Configuring Resource Management."

Note No traffic shaping or policing is available in the downstream direction.

Note When you configure PVC connections, configure the lowest VPI and VCI numbers first.

Examples

This example shows how to configure the internal cross-connect PVP within DSLAM B between interfaces 0/2, VPI = 1 and interface 0/1, VPI = 2:


DSLAM-B# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
DSLAM-B(config)# interface atm 0/2
DSLAM-B(config-if)# atm pvp 1 interface atm 0/1 2

This example shows how to configure the internal cross-connect PVP within DSLAM C between interfaces 0/1, VPI = 2 and interface 0/2, VPI = 50:

DSLAM-C(config)# interface atm 0/1
DSLAM-C(config-if)# atm pvp 2 interface atm 0/2 50

Each subsequent PVP cross connection and link must be configured until the VP is terminated to create the entire PVP.

To show the ATM interface configuration, use this EXEC command:

Command
Task

show atm vp [interface atm slot/port vpi]

Show the ATM VP configuration.


Example

This example displays the PVP configuration of DSLAM B:

DSLAM-B# show atm vp
Interface VPI Type X-Interface X-VPI Status
ATM0/1       1      PVP   ATM0/2          2         UP

This example displays the PVP configuration of DSLAM B:

DSLAM-B# show atm vp interface atm 0/1 1
Interface: ATM0/1, Type: suni-dual
VPI = 1
Status: TUNNEL
Time-since-last-status-change: 4d22h
Connection-type: PVP
Cast-type: point-to-point
Usage-Parameter-Control (UPC): pass
Number of OAM-configured connections: 0
OAM-configuration: disabled
OAM-states: Not-applicable
Cross-connect-interface: ATM0/2, Type: suni-dual
Cross-connect-VPI = 2
Cross-connect-UPC: pass
Cross-connect OAM-configuration: disabled
Cross-connect OAM-state: Not-applicable
Rx cells: 0, Tx cells: 0
Rx Upc Violations:0, Rx cell drops:0
Rx Clp0 q full drops:0, Rx Clp1 qthresh drops:0
Rx connection-traffic-table-index: 1
Rx service-category: UBR (Unspecified Bit Rate)
Rx pcr-clp01: 7113539
Rx scr-clp01: none
Rx mcr-clp01: none
Rx cdvt: 1024 (from default for interface)
Rx mbs: none
Tx connection-traffic-table-index: 1
Tx service-category: UBR (Unspecified Bit Rate)
Tx pcr-clp01: 7113539
Tx scr-clp01: none
Tx mcr-clp01: none
Tx cdvt: none
Tx mbs: none

This example displays the PVP configuration of DSLAM B:

DSLAM-B# show atm vp interface atm 0/1 1
Interface: ATM3/1/0, Type: suni-dual
VPI = 1
Status: TUNNEL
Time-since-last-status-change: 4d22h
Connection-type: PVP
Cast-type: point-to-point
Usage-Parameter-Control (UPC): pass
Wrr weight: 32
Number of OAM-configured connections: 0
OAM-configuration: disabled
OAM-states: Not-applicable
Cross-connect-interface: ATM0/2, Type: suni-dual
Cross-connect-VPI = 2
Cross-connect-UPC: pass
Cross-connect OAM-configuration: disabled
Cross-connect OAM-state: Not-applicable
Threshold Group: 5, Cells queued: 0
Rx cells: 0, Tx cells: 0
Tx Clp0:0, Tx Clp1: 0
Rx Clp0:0, Rx Clp1: 0
Rx Upc Violations:0, Rx cell drops:0
Rx Clp0 q full drops:0, Rx Clp1 qthresh drops:0
Rx connection-traffic-table-index: 1
Rx service-category: UBR (Unspecified Bit Rate)
Rx pcr-clp01: 7113539
Rx scr-clp01: none
Rx mcr-clp01: none
Rx cdvt: 1024 (from default for interface)
Rx mbs: none
Tx connection-traffic-table-index: 1
Tx service-category: UBR (Unspecified Bit Rate)
Tx pcr-clp01: 7113539
Tx scr-clp01: none
Tx mcr-clp01: none
Tx cdvt: none
Tx mbs: none

Configuring Soft PVC Connections

This section describes how to configure soft PVC connections, which provide these features:

•Connection to another host, switch, or DSLAM that does not support signaling

•Configuration of PVCs without the manual configuration steps described in the "Configuring Permanent Virtual Channel Connections" section.

•Configuration of PVCs with the reroute or retry capabilities if a failure occurs in the network

Figure 5-4 illustrates the soft PVC connections used in these examples. Switch B and Switch C can be ATM switches or DSLAMs.

Figure 5-4 Soft Permanent Virtual Channel Connection Example

Guidelines for Creating Soft PVCs

Perform these steps when you configure soft PVCs:

Step 1 Determine which two ports you want to define as participants in the soft PVC.

Step 2 Decide which of these two ports you want to designate as the destination (or passive) side of the soft PVC.

This decision is arbitrary—it makes no difference which port you define as the destination end of the circuit.

Step 3 Configure the destination (passive) side of the soft PVC.

You must configure the destination end of the soft PVC first, to define an ATM address for that port.

You must retrieve this address (see Step 4), and the VPI/VCI values for the circuit (see Step 5), and use these elements as part of the command string when you configure the source (active) end of the soft PVC (see Step 6).

Step 4 Retrieve the ATM address of the destination end of the soft PVC using the show atm address command. This command typically produces output in the form:

DSLAM# show atm address

Switch Address(es):
47.00918100000000400B0A2A81.00400B0A2A81.00 active

Soft VC Address(es):
  47.0091.8100.1111.1111.1111.1111.1111.1111.1111.00 ATM4/0

ILMI Switch Prefix(es):
47.0091.8100.0000.0040.0b0a.2a81

ILMI Configured Interface Prefix(es):

LECS Address(es):

Step 5 Retrieve the VPI/VCI values for the circuit using the show atm vc command. This command typically produces output in the form:

DSLAM# show atm vc interface atm 0/0
Interface VPI VCI Type X-Interface X-VPI X-VCI Encap Status
ATM0/0 0 5 PVC ATM0/0 0 52 QSAAL DOWN
ATM0/0 0 16 PVC ATM0/0 0 32 ILMI DOWN
ATM0/0     0     200    SoftVC  ATM0/0     0     100          UP
DSLAM#

Step 6 Configure the source (active) end of the soft PVC. At the same time, complete the soft PVC setup using the information derived from Step 4 and Step 5.

You must configure the source end of the soft PVC last because this not only defines the configuration information for the source port, but also requires you to enter the ATM address and VPI/VCI values for the destination port.

If you have not already defined the destination port for the soft PVC (as required in Step 3), this ATM address is not defined for the destination port, and the VPI/VCI values are not available, as required in Step 6 for use in completing the soft PVC.

Configuring Soft Permanent Virtual Channels

To configure a soft PVC connection, perform these steps, beginning in privileged EXEC mode:

Step
Command
Task

1.

show atm addresses

Determine the destination ATM address.

2.

configure terminal

At the privileged EXEC prompt, enter configuration mode from the terminal.

3.

interface atm slot/port [.vpt#]

Select the interface to be configured.

4.

atm soft-vc src-vpi src-vci dest-address dest_address dest-vpi dest-vci [pd pd] [rx-cttr index] [slow-retry-interval seconds] [tx-cttr index] [upc drop pass tag]

Configure the soft PVC connection.


Note You must configure the row index for rx-cttr and tx-cttr before you use this optional parameter. See Chapter 9, "Configuring Resource Management."

Examples

This example shows how to allow User A to determine the destination ATM address of the interface connected to User D:

Switch-C# show atm addresses
Switch Address(es):
47.00918100000000603E5ADB01.00603E5ADB01.00 active

Soft VC Address(es):
  47.0091.8100.1111.1111.1111.1111.1111.1111.1111.00 ATM0/0

ILMI Switch Prefix(es):
47.0091.8100.0000.0060.3e5a.db01

ILMI Configured Interface Prefix(es):

LECS Address(es):

This example shows how to configure a soft PVC on Switch B between interface 0/0, source VPI = 0, source VCI = 200; and switch C, destination ATM address = 47.0091.8100.00.0000.1111.1111.1111.1111.1111.1111.00, VPI = 0, VCI = 100 (see Figure 5-4):

Switch-B(config)# interface atm 0/0
Switch-B(config-if)# atm soft-vc 0 200 dest-address 47.0091.8100.00.0000.1111.1111.1111.1111.1111.1111.00 0 100

To display the soft VC configuration at either end of a switch or DSLAM, use the EXEC commands:

Step
Command
Task

1.

show atm vc slot/port

Show the ATM interface configuration.

2.

show atm vc [interface atm slot/port vpi vci]

Show the soft VC interface configuration.


Examples

This example displays the soft VC configuration of Switch B, on interface 0/0 out to the ATM network:

Switch-B# show atm vc interface atm 0/0
Interface VPI VCI Type X-Interface X-VPI X-VCI Encap Status
ATM0/0 0 5 PVC ATM0/0 0 52 QSAAL DOWN
ATM0/0 0 16 PVC ATM0/0 0 32 ILMI DOWN
ATM0/0     0     200    SoftVC  ATM0/0     0     100          UP

This example displays the soft VC configuration of Switch C, on interface 4/0 out to the ATM network:

Switch-C# show atm vc interface atm 4/0
Interface VPI VCI Type X-Interface X-VPI X-VCI Encap Status
ATM4/0       0 5 PVC ATM0/0 0 52 QSAAL DOWN
ATM4/0       0 16 PVC ATM0/0 0 32 ILMI DOWN
ATM4/0       0   100 SoftVC  ATM0/0     0     200          UP

This example displays the soft VC configuration of Switch B, on interface 0/0, VPI = 0, VCI = 200 out to the ATM network:

Switch-B# show atm vc interface atm 0/0 0 200
Interface: ATM0/0, Type: suni-dual
VPI = 0 VCI = 200
Status: NOT CONNECTED
Time-since-last-status-change: 00:00:45
Connection-type: SoftVC
Cast-type: point-to-point
Soft vc location: Source
Remote ATM address: 47.0091.8100.00.0000.1111.1111.1111.1111.1111.1111.00
Remote VPI: 0
Remote VCI: 100
Soft vc call state: Inactive
Number of soft vc re-try attempts: 4
Slow-retry-interval: 60 seconds
Next retry in: 29 seconds
Aggregate admin weight: 0
Packet-discard-option: disabled
Usage-Parameter-Control (UPC): pass
Number of OAM-configured connections: 0
OAM-configuration: disabled
OAM-states: Not-applicable
Rx cells: 0, Tx cells: 0
Rx connection-traffic-table-index: 1
Rx service-category: UBR (Unspecified Bit Rate)
Rx pcr-clp01: 7113539
Rx scr-clp01: none
Rx mcr-clp01: none
Rx cdvt: 1024 (from default for interface)
Rx mbs: none
Tx connection-traffic-table-index: 1
Tx service-category: UBR (Unspecified Bit Rate)
Tx pcr-clp01: 7113539
Tx scr-clp01: none
Tx mcr-clp01: none
Tx cdvt: none
Tx mbs: none

This example displays the soft VC configuration of Switch B, on interface 0/0, VPI = 0, VCI = 200 out to the ATM network with FC-PFQ installed:

Switch-B# show atm vc interface atm 0/0 0 200
Interface: ATM0/0, Type: suni-dual
VPI = 0 VCI = 200
Status: NOT CONNECTED
Time-since-last-status-change: 00:00:45
Connection-type: SoftVC
Cast-type: point-to-point
Soft vc location: Source
Remote ATM address: 47.0091.8100.00.0000.1111.1111.1111.1111.1111.1111.00
Remote VPI: 0
Remote VCI: 100
Soft vc call state: Inactive
Number of soft vc re-try attempts: 4
Slow-retry-interval: 60 seconds
Next retry in: 29 seconds
Aggregate admin weight: 0
Packet-discard-option: disabled
Usage-Parameter-Control (UPC): pass
Wrr weight: 32
Number of OAM-configured connections: 0
OAM-configuration: disabled
OAM-states: Not-applicable
Threshold Group: 5, Cells queued: 0
Rx cells: 0, Tx cells: 0
Tx Clp0:0, Tx Clp1: 0
Rx Clp0:0, Rx Clp1: 0
Rx Upc Violations:0, Rx cell drops:0
Rx Clp0 q full drops:0, Rx Clp1 qthresh drops:0
Rx connection-traffic-table-index: 1
Rx service-category: UBR (Unspecified Bit Rate)
Rx pcr-clp01: 7113539
Rx scr-clp01: none
Rx mcr-clp01: none
Rx cdvt: 1024 (from default for interface)
Rx mbs: none
Tx connection-traffic-table-index: 1
Tx service-category: UBR (Unspecified Bit Rate)
Tx pcr-clp01: 7113539
Tx scr-clp01: none
Tx mcr-clp01: none
Tx cdvt: none
Tx mbs: none

Configuring Soft PVP Connections

This section describes how to configure soft PVP connections. Soft PVC connections provide these features:

•Connection to another host or switch that does not support signaling

•Configuration of PVPs without the manual configuration steps described in this section.

•Configuration of PVPs with the reroute or retry capabilities when a failure occurs within the network

Figure 5-5 is an illustration of the soft PVP connections used in the examples in this section. Switch B and Switch C can be ATM switches or DSLAMs.

Figure 5-5 Soft Permanent Virtual Path Connection Example

To configure a soft PVP connection, perform these steps, beginning in global configuration mode:

Step
Command
Task

1.

interface atm slot/port

Select the interface to be configured.

2.

atm soft-vp src-vpi dest-address dest-address dest-vpi [pd pd] [rx-cttr index] [slow-retry-interval seconds] [tx-cttr index] [upc drop pass tag]

Configure the soft PVP connection.


Note You must configure the row index for rx-cttr and tx-cttr before you use this optional parameter. See Chapter 9, "Configuring Resource Management."

Example

This example shows how to configure a soft PVP on Switch B between interface 0/0, source VPI = 75, and Switch C, destination ATM address = 47.0091.8100.00.0000.1111.1111.1111.1111.1111.1111.00, VPI = 50 ( Figure 5-5):

Switch-B(config)# interface atm 0/0
Switch-B(config-if)# atm soft-vp dest-address 75 47.0091.8100.00.0000.1111.1111.1111.1111.1111.1111.00 50

To show the ATM virtual path configuration, use this EXEC command:

Command
Task

show atm vp [interface atm slot/port vpi]

Show the ATM VP configuration.


Examples

This example displays the soft VP configuration at Switch B, on interface 0/0 out to the ATM network:

Switch-B# show atm vp
Interface VPI Type X-Interface X-VPI Status
ATM0/0     75     SoftVP   ATM4/0         50        UP

This example displays the soft VP configuration at Switch C, on interface 4/0 out to the ATM network:

Switch-C# show atm vp
Interface VPI Type X-Interface X-VPI Status
ATM4/0       50     SoftVP   ATM0/0     75        UP

This example displays the soft VP configuration at Switch B, on interface 0/0, VPI = 75 out to the ATM network:

Switch-B# show atm vp interface atm 0/0 75
Interface: ATM0/0, Type: suni-dual
VPI = 75
Status: TUNNEL
Time-since-last-status-change: 00:01:10
Connection-type: SoftVP
Cast-type: point-to-point
Soft vp location: Source
Remote ATM address: 47.0091.8100.00.0000.1111.1111.1111.1111.1111.1111.00
Remote VPI: 50
Soft vp call state: Inactive
Number of soft vp re-try attempts: 4
Slow-retry-interval: 60 seconds
Next retry in: 4 seconds
Aggregate admin weight: 0
Usage-Parameter-Control (UPC): pass
Number of OAM-configured connections: 0
OAM-configuration: disabled
OAM-states: Not-applicable
Rx cells: 0, Tx cells: 0
Rx connection-traffic-table-index: 1
Rx service-category: UBR (Unspecified Bit Rate)
Rx pcr-clp01: 7113539
Rx scr-clp01: none
Rx mcr-clp01: none
Rx cdvt: 1024 (from default for interface)
Rx mbs: none
Tx connection-traffic-table-index: 1
Tx service-category: UBR (Unspecified Bit Rate)
Tx pcr-clp01: 7113539
Tx scr-clp01: none
Tx mcr-clp01: none
Tx cdvt: none
Tx mbs: none

This example displays the soft VP configuration at Switch B, on interface 0/0, VPI = 75 out to the ATM network:

Switch-B# show atm vp interface atm 0/0 75
Interface: ATM0/0, Type: suni-dual
VPI = 75
Status: TUNNEL
Time-since-last-status-change: 00:01:10
Connection-type: SoftVP
Cast-type: point-to-point
Soft vp location: Source
Remote ATM address: 47.0091.8100.00.0000.1111.1111.1111.1111.1111.1111.00
Remote VPI: 50
Soft vp call state: Inactive
Number of soft vp re-try attempts: 4
Slow-retry-interval: 60 seconds
Next retry in: 4 seconds
Aggregate admin weight: 0
Usage-Parameter-Control (UPC): pass
Wrr weight: 32
Number of OAM-configured connections: 0
OAM-configuration: disabled
OAM-states: Not-applicable
Threshold Group: 5, Cells queued: 0
Rx cells: 0, Tx cells: 0
Tx Clp0:0, Tx Clp1: 0
Rx Clp0:0, Rx Clp1: 0
Rx Upc Violations:0, Rx cell drops:0
Rx Clp0 q full drops:0, Rx Clp1 qthresh drops:0
Rx connection-traffic-table-index: 1
Rx service-category: UBR (Unspecified Bit Rate)
Rx pcr-clp01: 7113539
Rx scr-clp01: none
Rx mcr-clp01: none
Rx tolerance: 1024 (from default for interface)
Tx connection-traffic-table-index: 1
Tx service-category: UBR (Unspecified Bit Rate)
Tx pcr-clp01: 7113539
Tx scr-clp01: none
Tx mcr-clp01: none
Tx tolerance: none

Configuring Non-Default Well-Known PVCs

Normally the default well-known VCs are automatically created with default VCIs. However, for the unusual instances where the DSLAM interfaces with nonstandard equipment, you can configure nondefault well-known VCI values on a per-interface basis.

Table 5-2 lists the default well-known VCs and their default configuration.

Table 5-2 Well-Known Virtual Channels 

Channel Type
Virtual Path Identifier
Virtual Channel Identifier

Signaling

0

5

ILMI

0

16

PNNI

0

18

Tag switching

0

32


Caution Do not change the well-known channels to use a VC where the remote end is sending AAL5 messages not intended for the well-known VC. For example, do not swap VC values between two types of well-known VCs.

Overview of Non-Default PVC Configuration

This section provides an overview of the steps you need to perform to configure non-default well-known VCs:

Step 1 Enable manual well-known VC configuration.

Step 2 Delete any existing automatically created well-known VCs.

Step 3 Configure the individual encapsulation type as:

•Signaling (QSAAL)

•ILMI

•PNNI

Step 4 Copy running-configuration file to startup-configuration file.

Configuring Non-Default PVCs

To configure the non-default VCs for signaling, ILMI, and PNNI, perform these steps, beginning in global configuration mode:

Step
Command
Task

1.

interface atm slot/port

Select the interface to be configured.

2.

atm manual-well-known-vc {keep | delete}

Enter manual-well-known-vc mode.

3.

atm pvc vpi vci [upc upc] [pd pd] [rx-cttr index] [tx-cttr index] interface atm0/0 any-vci [encap {ilmi | pnni | qsaal}]

Configure the nondefault PVC for each signaling and ILMI channel.

4.

exit

Exit from interface configuration mode.

5.

end

Exit from global configuration mode.

6.

copy running-config startup-config

Copy the running configuration file to the startup configuration file.


Note An error condition occurs if either the signaling or ILMI well-known VCs remain unconfigured when an interface is enabled.

Example

This example shows the non-default VC configuration steps:

Step 1 Use the show atm vc interface atm 0/0 to display the configuration of the existing default well-known VCs for ATM interface 0/0.

Step 2 Change to interface configuration mode for ATM interface 0/0.

Step 3 Enter manual well-known-vc mode and delete the existing default well-known VCs using the atm manual-well-known-vc delete command.

Step 4 Confirm deletion by entering y.

Step 5 Configure the non-default VC for signaling from 5 (the default) to 35 using the atm pvc 1 35 interface atm0/0 0 any-vci encap qsaal command.

Step 6 Configure the ILMI VC, then configure the PNNI VC if needed using the same procedure.

Step 7 Save the new running configuration to the startup configuration using the copy running-config startup-config command.

An example of this procedure is:

DSLAM# show atm vc interface atm 0/0
Interface VPI VCI Type X-Interface X-VPI X-VCI Encap Status
ATM0/0     0 5 PVC ATM0/0 0 49 QSAAL UP
ATM0/0     0 16 PVC ATM0/0 0 33 ILMI UP
ATM0/0     0 18 PVC ATM0/0 0 65 PNNI UP
DSLAM#
DSLAM# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
DSLAM(config)# interface atm 0/0
DSLAM(config-if)# atm manual-well-known-vc delete

Okay to delete well-known VCs for this interface? [no]: y
DSLAM(config-if)# exit
DSLAM(config)# interface atm 0/0
DSLAM(config-if)# atm pvc 1 35 interface atm0/0 0 any-vci encap qsaal
DSLAM(config-if)# ^Z
DSLAM#
%SYS-5-CONFIG_I: Configured from console by console
DSLAM# show atm vc interface atm 0/0
Interface VPI VCI Type X-Interface X-VPI X-VCI Encap Status
ATM0/0 1    35 PVC ATM0/0 0 150 QSAAL UP
DSLAM# copy running-config startup-config
Building configuration...
[OK]

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Posted: Fri Dec 3 14:05:48 PST 2004
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