76-4
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Chapter 76 Configuring Y.1731 (AIS and RDI)
Configuring Y.1731
Configuring Y.1731
Note Y.1731 is enabled by default.
These sections are included:
• Y.1731 Configuration Guidelines, page 76-4
• Configuring AIS Parameters, page 76-4
• Clearing MEP from the AIS Defect Condition, page 76-5
• Clearing SMEP from the AIS Defect Condition, page 76-5
Y.1731 Configuration Guidelines
Configuration guidelines and restrictions for Y.1731 include the following:
• Because of STP’s restoration capability, do not expect ETH-AIS to be applied in the STP
environments.
• AIS is enabled by default on a CFM maintenance domain. The following section illustrates the
commands you can use to disable AIS on a maintenance domain. Likewise, RDI is a flag bit in the
CC message. Provided CC transmission is enabled, the present RDI flag of the CC message is set to
true or false.
Configuring AIS Parameters
To set the parameters for AIS, perform this task:
Command Purpose
Step 1
Switch# configure terminal
Enters global configuration mode.
Step 2
Switch (config)# ethernet cfm ais domain name
vlan range
Enters config-ais-mep-cfm submode to configure
parameters for all local Meps belonging to that per
Maintenance Association (MA).
name refers to the domain name.
range represents VLAN IDs 100, 200-300, 400, 500, or
1-4095
For the domain name vlan range command only
configurations that are VLAN disjoint or congruent are
accepted.
Step 3
Switch(config-ais-mep-cfm)# disable
Disables AIS transmission.
Step 4
Switch(config-ais-mep-cfm)# period period
Sets the AIS transmission period.
Step 5
Switch(config-ais-mep-cfm)# level level
Establishes a maintenance level to send AIS frames for
MEPs belonging to MA.
Valid levels are 0 to 7.
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