Cisco Asr 9000 Series Aggregation Services Router Interface And Hardware Component Command Reference - Cisco ASR 9000 Series Command Reference Manual

ais transmission
AIS messages are transmitted in the opposite direction of CCMs and other CFM messages that are sent by
the MEP. Therefore, up MEPs send AIS messages out of the interface, whereas down MEPs send AIS messages
toward the bridging function.
In addition, AIS messages are sent at a higher maintenance level than other CFM messages sent by the MEP:
• If there is a higher-level MEP on the interface in the same direction (up MEP or down MEP), then the
• If there is a MIP on the interface, then AIS messages are sent at the level of the MIP.
Task ID
Task ID
ethernet-services
Examples The following example shows how to configure Alarm Indication Signal (AIS) transmission for a CFM domain
service:
RP/0/RSP0/CPU0:router# configure
RP/0/RSP0/CPU0:router(config)# ethernet cfm
RP/0/RSP0/CPU0:router(config-cfm)# domain D1 level 1
RP/0/RSP0/CPU0:router(config-cfm-dmn)# service S1 bridge group BG1 bridge-domain BD2
RP/0/RSP0/CPU0:router(config-cfm-dmn-svc)# ais transmission interval 1m cos 7
Related Commands
Command
log ais, on page 263
ais transmission up, on page 159
show ethernet cfm interfaces ais, on page 324
show ethernet cfm local meps, on page 333

Cisco ASR 9000 Series Aggregation Services Router Interface and Hardware Component Command Reference,

Release 5.3.x
158
AIS messages are passed internally to this higher level MEP. In this case, no AIS messages are actually
transmitted (unless the higher-level MEP is also in a service with AIS transmission configured).
Ethernet OAM Commands on the Cisco ASR 9000 Series Router
Operations
read, write
Description
Configures AIS logging for a CFM domain service to indicate
when AIS or LCK packets are received.
Configures AIS transmission on a CFM interface.
Displays the information about interfaces that are currently
transmitting AIS.
Displays information about local MEPs.