Configuring ESCON Aggregation Card Interfaces

This chapter describes how to configure the interfaces on 10-port ESCON aggregation cards.

This chapter includes the following sections:

• About ESCON Signal Aggregation Support

• Configuring ESCON Aggregation Card Interfaces

• About Latency and Transmit Buffers

• Configuring Transmit Buffer Size

• About Cross Connections

• Configuring Cross Connections

• About Alarm Thresholds

• Configuring Alarm Thresholds

Note To ensure the installed Cisco IOS software supports your hardware and provides the software features you wish to use, see the "New and Changed Information" section on page xiii. Also refer to the "Hardware Supported" section and "Feature Set" section of the latest release notes for the Cisco ONS 15530.

About ESCON Signal Aggregation Support

The ESCON aggregation card aggregates up to ten ESCON data streams into a single 2.5-Gbps signal, which is transmitted through the switch fabric to a 2.5-Gbps ITU trunk card, 10-Gbps ITU trunk card, or 10-Gbps uplink card. The ESCON aggregation card can be populated with up to ten SFP (small form-factor pluggable) optics.

Figure 4-1 shows the path of an ESCON signal through the Cisco ONS 15530.

Figure 4-1 Interface Model for ESCON Aggregation

To configure ESCON support on the Cisco ONS 15530, perform the following steps:

Step 1 Configure ESCON aggregation card interfaces.

Step 2 Configure 2.5-Gbps ITU trunk card interfaces, 10-Gbps ITU trunk card interfaces, or 10-Gbps uplink card interfaces as described in Chapter 7, "Configuring Trunk and Uplink Card Interfaces."

Step 3 Configure cross connections.

Step 4 Configure alarm thresholds (optional).

Step 5 Configure patch connections.

Configuring ESCON Aggregation Card Interfaces

The ESCON aggregation card has two types of interfaces: ten esconphy interfaces on the client side and one portgroup interface on the trunk side. The primary feature to configure on the ESCON aggregation card is the in-band message channel flow identifier. The in-band message channel provides an encapsulation that uniquely identifies an ESCON signal when it is aggregated with the other ESCON signals.

To configure the ESCON aggregation card interfaces, perform the following tasks, starting in global configuration mode:


	Command	Purpose
Step 1	Switch(config)# interface esconphy slot/0/port Switch(config-if)#	Specifies an interface to configure and enters interface configuration mode.
Step 2	Switch(config-if)# cdl flow identifier number	Configures the in-band message channel flow identifier. The range is 0 to 174. Note You must configure the other esconphy interface in the network that supports this signal with the same flow identifier. Caution Use unique flow identifiers for each esconphy interface on the system. Duplicate flow identifiers might interfere with APS switchovers.
Step 3	Switch(config-if)# laser control forward enable	Enables forward laser control on the interface. The default for esconphy interfaces is enabled. When FLC is enabled on the interface where the receive fault (loss of light or loss of synchronization) occurs, the peer Escon port shuts down its laser toward the client device (even if FLC is not enabled). This card uses end-to-end FLC (E2EFLC). For more information on FLC, see the "About Laser Shutdown" section on page 6-14.
Step 4	Switch(config-if)# no shutdown	Enables the interface.
Step 5	Switch(config-if)# exit Switch(config)#	Returns to global configuration mode. Repeat Step 1 through Step 5 for the other esconphy interfaces on the ESCON aggregation card.
Step 6	Switch(config)# interface portgroup slot/0/0 Switch(config-if)#	Specifies an interface to configure and enters interface configuration mode.
Step 7	Switch(config-if)# cdl flow identifier reserve group-name	Configures the in-band message channel flow identifiers for all ten esconphy interfaces even if the SFPs are not populated. This step is required if the aggregated ESCON signal mixes with GE traffic on a 10-Gbps ITU trunk card. Note You must configure the other esconphy interface in the network that supports the signals with the same flow identifiers. Caution Use unique flow identifiers for each esconphy interface on the system. Duplicate flow identifiers might interfere with APS switchovers.

Note If traffic from an ESCON aggregation card mixes with GE traffic from an 8-port FC/GE aggregation card on the same 10-Gbps ITU trunk card, all ten esconphy interfaces must have flow control identifiers configured and those populated with SFPs must be enabled with the no shutdown command.

Note When forward laser control is enable on an esconphy interface and a loss of light is detected on the port, the transmitter laser on the corresponding port on the remote node is turned off, regardless of the forward laser control configuration on the remote esconphy interface.

Example

The following example shows how to configure ESCON aggregation card interfaces:

Switch(config)# interface esconphy 10/0/0

Switch(config-if)# cdl flow identifier 100

Switch(config-if)# no shutdown

Switch(config-if)# exit

Displaying the ESCON Aggregation Card Interface Configuration

To display the configuration of ESCON aggregation card interfaces, use the following EXEC commands:


Command	Purpose
show interfaces {esconphy \| portgroup} slot/subcard/port	Displays the interface configuration.
show cdl flow identifier	Displays the in-band message channel flow identifiers for all interfaces on the system.

Examples

The following example shows how to display the configuration of an esconphy interface:

Switch# show interfaces esconphy 7/0/0

EsconPhy7/0/0 is administratively down, line protocol is down

  Forward laser control:On

  Threshold monitored for:None

  Received Frames:0

  Transmit Frames:0

  Code violation and running disparity error count( 8b10b cvrd):0

  CRC error count:0

  Egress Packet Sequence error count:0

  Egress Packet Indicated error count:0

  5 minute input rate 0 bits/sec, 0 frames/sec

  5 minute output rate 0 bits/sec, 0 frames/sec

  Transmit Buffer size is 16 bytes

  Hardware is escon_phy_port

The following example shows how to display the configuration of a portgroup interface:

Switch# show interfaces portgroup 10/0/0

Portgroup10/0/0 is up, line protocol is up

  Transmit Packets:171666543

  Received Packets:1559740251

  Code violation and running disparity error count(cvrd):93055574624

  Number of times SF threshold exceeded:1

  CRC error count:142890092

  Number of times SF threshold exceeded:1

  CDL HEC error count:142412666

  Number of times SF threshold exceeded:1

  SII Mismatch error count:473589

  Protocol Mismatch error count:12

  Transmit Buffer size is 16 bytes

  Hardware is escon_portgroup

The following example shows how to display the flow identifiers on the system:

Switch# show cdl flow identifier

Interface       Flow

              Identifier

------------  ----------

Esco8/0/0        80

Esco8/0/1        81

Esco8/0/2        82

Esco8/0/3        83

Esco8/0/4        84

Esco8/0/5        85

Esco8/0/6        86

Esco8/0/7        87

Esco8/0/8        88

Esco8/0/9        89

Esco10/0/0       100

Esco10/0/1       255

Esco10/0/2       255

Esco10/0/3       255

Esco10/0/4       255

Esco10/0/5       255

Esco10/0/6       255

Esco10/0/7       255

Esco10/0/8       255

Esco10/0/9       255

About Latency and Transmit Buffers

The ESCON aggregation card adds latency to the transmission of ESCON traffic. Table 4-1 shows the various configurations on the transmitting node and the ESCON latency values.

Note The ESCON latency values have been determined by simulation and are approximate.

Table 4-1 Latency for ESCON Aggregation Cards
Traffic Mix on Transmitting Node	Maximum Added End-to-End Latency¹
Traffic Mix on Transmitting Node	No GE	1518-Byte GE Packets	4470-Byte GE Packets	10,230-Byte GE Packets
ESCON only	8.5 microseconds
ESCON and FC/FICON on the same 10-Gbps ITU trunk card	8.5 microseconds
ESCON and GE only on the same 10-Gbps ITU trunk card		10 microseconds	12.5 microseconds	17 microseconds

¹The latency values are based on configuration of correct transmit buffer sizes as described in Table 4-2.

A transmit buffer on the receiving node compensates for the packet jitter effects due to service multiplexing on the trunk. You must correctly configure the size of this transmit buffer to ensure that no buffer underflow or overflow occurs.

Configuring Transmit Buffer Size

To accommodate this latency on the receiving node, perform the following steps, starting in global configuration mode:


	Command	Purpose
Step 1	Switch(config)# interface esconphy slot/0/port Switch(config-if)#	Selects the interface to configure and enters interface configuration mode.
Step 2	Switch(config-if)# shutdown	Disables the interface.
Step 3	Switch(config-if)# tx-buffer size bytes	Configures the transmit buffer size. The default buffer size is 16 bytes. The range is 16 to 232. Note Changing the transmit buffer size on one esconphy interface changes it on all esconphy interfaces on the ESCON aggregation card. Caution Issuing the tx-buffer size command might momentarily disrupt traffic through all esconphy interfaces on the card.
Step 4	Switch(config-if)# no shutdown	Enables the interface.

Table 4-2 provides the transmit buffer settings for various configurations.

Table 4-2 Latency for ESCON Aggregation Cards
Traffic Mix on Transmitting Node	Transmit Buffer Size (in Bytes) on the Receiving Node
Traffic Mix on Transmitting Node	No GE	1518-Byte GE Packets	4470-Byte GE Packets	10,230-Byte GE Packets
ESCON only	16 (default)
ESCON and FC/FICON on the same 10-Gbps ITU trunk card	16 (default)
ESCON and GE only on the same 10-Gbps ITU trunk card		24	72	168

Example

The following example shows how to configure the transmit buffer size on the receiving node:

Switch(config)# interface esconphy 3/0/2

Switch(config-if)# shutdown

Switch(config-if)# tx-buffer size 168

Switch(config-if)# no shutdown

Displaying Transmit Buffer Configuration

To display the transmit buffer configuration of an esconphy interface, use the following EXEC command:


Command	Purpose
show interfaces esconphy slot/0/port	Displays the interface configuration.

Example

The following example shows how to display the transmit buffer configuration:

Switch# show interfaces esconphy 3/0/0

EsconPhy3/0/0 is administratively down, line protocol is down

  Forward laser control: On

  Configured threshold Group(s): all

  Threshold monitored for: CRC

  SF set value: 10e-8 (2 in 1 secs)

  SD set value: 10e-9 (1 in 5 secs)

  Received Frames: 0

  Transmit Frames: 0

  Code violation and running disparity error count( 8b10b cvrd): 0

  CRC error count: 0

  Number of times SF threshold exceeded: 0

  Number of times SD threshold exceeded: 0

  Egress Packet Sequence error count: 0

  Egress Packet Indicated error count: 0

  5 minute input rate 0 bits/sec, 0 frames/sec

  5 minute output rate 0 bits/sec, 0 frames/sec

   Transmit Buffer size is 168 bytes

  Hardware is escon_phy_port

About Cross Connections

The client signal follows a path of interface optical cross connections through the Cisco ONS 15530. Figure 4-2 shows an example of cross connections. Knowing the path of a signal through the shelf helps with system management and troubleshooting.

Figure 4-2 Optical Cross Connection Example

Configuring Cross Connections

The aggregated signal from the ESCON aggregation cards passes through the switch fabric to the 2.5-Gbps ITU trunk card, 10-Gbps ITU trunk card, or the 10-Gbps uplink card. To establish a cross connection through the switch fabric, perform the following steps, beginning in global configuration mode:


Command	Purpose
Switch(config)# connect interface1 interface2	Creates a cross connection between two interfaces through the switch fabric.

Caution

If ESCON traffic mixes with GE traffic on a 10-Gbps ITU trunk card, be sure to assign flow identifiers to all esconphy interfaces, using either the cdl flow identifier command or the cdl flow identifier reserved command, and to enable the interfaces with the no shutdown command.

Example

The following example shows how to configure a cross connection between an ESCON aggregation card and a 2.5-Gbps ITU trunk card:

Switch(config)# connect portgroup 2/0/0 waveethernetphy 3/0

The following example shows how to configure a cross connection between an ESCON aggregation card and a 10-Gbps ITU trunk card:

Switch(config)# connect portgroup 2/0/0 waveethernetphy 3/0.1

The following example shows how to configure a cross connection between an ESCON aggregation card and a 10-Gbps uplink card:

Switch(config)# connect portgroup 2/0/0 tengigethernetphy 3/0.1

Displaying the Cross Connection Configuration

To display the cross connection configuration, use the following privileged EXEC command:


Command	Purpose
show connect [edge \| intermediate [sort-channel \| interface interface]]	Displays the signal cross connection configuration through the system.

Example

The following example shows the cross connections within a system for an ESCON signal:

Switch# show connect

Index Client Intf     Trunk Intf      Kind        C2TStatus  T2CliStatus

----- --------------- --------------- ----------- ----------  ---------

15    Port3/0/0       WaveE8/0.1      Provisioned Up         Up

About Alarm Thresholds

You can configure thresholds on the ESCON aggregation card interfaces that issue alarm messages to the system if the thresholds are exceeded.

Every second, the monitoring facility updates the counters that correspond to the alarm thresholds. When the signal degrades, or fails entirely, the system issues alarms to the console. These alarms can help isolate failures in the system and in the network.

You can configure more than one threshold list on an interface. The threshold lists cannot have overlapping counters so that only one counter is set for the interface. Also, the threshold list name cannot begin with the text string "default" because it is reserved for use by the system.

Configuring Alarm Thresholds

To configure alarm thresholds on the ESCON aggregation card, 2.5-Gbps ITU trunk card, 10-Gbps ITU trunk card, and 10-Gbps uplink card interfaces, perform the following steps, beginning in global configuration mode:


	Command	Purpose
Step 1	Switch(config)# threshold-list name Switch(config-t-list)#	Creates or selects the threshold list to configure and enters threshold list configuration mode. Note You cannot modify an existing threshold list if it is associated with an interface.
Step 2	Switch(config-t-list)# notification-throttle timer seconds	Configures the SNMP notification timer. The default value is 5 seconds. (Optional)
Step 3	Switch(config-t-list)# threshold name {cvrd \| cdl hec \| crc \| sonet-sdh section cv \| tx-crc} {failure \| degrade} [index value] Switch(config-threshold)#	Specifies a threshold type to modify and enters threshold configuration mode.
Step 4	Switch(config-threshold)# value rate value	Specifies the threshold rate value. This value is the negative power of 10 (10^-n).
Step 5	Switch(config-threshold)# description text	Specifies a description of the threshold. The default value is the null string. (Optional)
Step 6	Switch(config-threshold)# exit Switch(config-t-list)#	Returns to threshold list configuration mode. Repeat Step 3 through Step 6 to configure more thresholds in the threshold list.
Step 7	Switch(config-t-list)# exit Switch(config)#	Returns to global configuration mode.
Step 8	Switch(config)# interface interface Switch(config-if)#	Selects the interface to configure and enters interface configuration mode.
Step 9	Switch(config-if)# threshold-group name	Configures the threshold list on the interface.

Note When a threshold list is applied to one esconphy interface all esconphy interfaces on the ESCON aggregation card inherit that threshold list configuration.

Table 4-3 lists the threshold error rates in errors per second for ESCON signals.

Table 4-3 Threshold Values for Monitored Rates for ESCON Signals in Errors Per Second
Rate	ESCON CRC	ESCON CVRD
3	19999	20000
4	19999	20000
5	1999	2000
6	199	200
7	20	20
8	2	2
9	0.2	0.2

Example

The following example shows how to create an alarm threshold list and configure that list for ESCON aggregation card interfaces:

Switch# configure terminal

Switch(config)# threshold-list escon-counters

Switch(config-t-list)# threshold name crc degrade

Switch(config-threshold)# value rate 9

Switch(config-threshold)# exit

Switch(config-t-list)# threshold name crc failure

Switch(config-threshold)# value rate 7

Switch(config-threshold)# exit

Switch(config-t-list)# exit

Switch(config)# interface esconphy 3/0/0

Switch(config-if)# threshold-group escon-counters

Displaying the Alarm Threshold Configuration

To display the configuration of a threshold list and the threshold group for an esconphy interface, use the following EXEC commands:


Command	Purpose
show threshold-list [name]	Displays the threshold group configuration.
show interfaces {esconphy slot/subcard/slot}	Displays the interface configuration.

Examples

The following example shows how to display the configuration of a threshold group:

Switch# show threshold-list escon-counters

 Threshold List Name: escon-counters

   Notification throttle timer : 5 (in secs)

   Threshold name : CRC  Severity : Degrade

      Value : 10e-9

      APS Trigger : Not set

   Threshold name : CRC  Severity : Failure

      Value : 10e-7

      APS Trigger : Not set

The following example shows how to display the threshold group information for an interface:

Switch# show interfaces esconphy 3/0/0

EsconPhy3/0/0 is up, line protocol is up

  Signal quality: Good

  Forward laser control: Off

  Configured threshold Group: escon-counters

  Threshold monitored for: CRC

  SF set value: 10e-7 (20 in 1 secs)

  SD set value: 10e-9 (1 in 5 secs)

  Received Frames: 0

  Transmit Frames: 0

  Code violation and running disparity error count(cvrd): 0

  Number of times SF threshold exceeded: 0

  Number of times SD threshold exceeded: 0

  CRC error count: 0

  Number of times SF threshold exceeded: 0

  Number of times SD threshold exceeded: 0

  Egress Packet Sequence error count: 0

  Egress Packet Indicated error count: 0

  5 minute input rate 0 bits/sec, 0 frames/sec

  5 minute output rate 0 bits/sec, 0 frames/sec

  Hardware is escon_phy_port

Table Of Contents

Configuring ESCON Aggregation Card Interfaces

About ESCON Signal Aggregation Support

Configuring ESCON Aggregation Card Interfaces

Displaying the ESCON Aggregation Card Interface Configuration

About Latency and Transmit Buffers

Configuring Transmit Buffer Size

Displaying Transmit Buffer Configuration

About Cross Connections

Configuring Cross Connections

Displaying the Cross Connection Configuration

About Alarm Thresholds

Configuring Alarm Thresholds

Displaying the Alarm Threshold Configuration