Interfaces and Hardware Component Configuration Guide for Cisco 8000 Series Routers, Cisco IOS XR Releases

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Interfaces and Hardware Component Configuration Guide for Cisco 8000 Series Routers, Cisco IOS XR Releases

Configure AIS on a CFM interface

Updated: July 31, 2026

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This topic describes how to configure Alarm Indication Signal (AIS) transmission on a Connectivity Fault Management (CFM) interface by entering interface configuration mode, enabling Ethernet CFM, and specifying the AIS interval and class of service.

To configure AIS on a CFM interface, perform the following steps:

Procedure

1.

Enter global configuration mode.

Example:

Router# configure
2.

Enter interface configuration mode.

Example:

Router# interface TenGigE 0/0/0/2
3.

Enter Ethernet CFM interface configuration mode.

Example:

Router(config)# ethernet cfm
4.

Use the ais transmission up interval 1m cos cos command to configure Alarm Indication Signal (AIS) transmission on a Connectivity Fault Management (CFM) interface.

Example:

Router(config-if-cfm)# ais transmission up interval 1m cos 7
5.

Save the configuration changes to the running configuration file and remain within the configuration session.

Example:

Router(config-sla-prof-stat-cfg)# commit
6.

End the configuration session and exits to the EXEC mode.

Example:

Router(config-sla-prof-stat-cfg)# end