Ethernet Link OAM
The Satellite nV Ethernet interfaces support Ethernet Link OAM feature when ICL is physical interface. But
the feature does not work for SE with bundle ICL. Cisco IOS XR Software also supports Ethernet Link OAM
feature over Satellite Ethernet interfaces when the ICL is a bundle interface.
802.3ah Loopback Support on Satellite nV System
The 802.3ah loopback feature allows you to loopback all the non OAMPDU packets from the remote node
that is defined as slave. The port that is defined as master controls the loopback status on the remote node.
You can conduct various performance and quality testing on the remote port that is in slave state using this
feature. This loopback mode is disruptive because the traffic does not flow through the router in slave state.
The Loopback function is supported on the satellite nV system ports both in over protected and unprotected
ICL modes. You can define the loopback function on the node that is in master state using the remote-loopback
command in the ethernet oam interface configuration mode.
You can use the ethernet oam loopback enable <interface> and ethernet oam loopback disable <interface>
commands from the master node to enable and disable the loopback respectively on the slave node.
You cannot loopback the Layer 2 protocol packets such as CFM, OAM, and LACP.Note
This configuration snippet shows how to configure loopback.
RP/0/RSP0/CPU0:router(config)# interface gigabitEthernet 0/1/0/9
RP/0/RSP0/CPU0:router(config-if)# ethernet oam
RP/0/RSP0/CPU0:router(config-if-eoam)# remote-loopback
RP/0/RSP0/CPU0:router(config-if-eoam)# commit
This is a sample output of the show ethernet oam discovery command, which indicates that loopback is
supported.
RP/0/RSP0/CPU0:router# show ethernet oam discovery
Local client
------------
Administrative configuration:
PDU revision: 9
Mode: Active
Unidirectional support: Y
Link monitor support: Y
Remote loopback support: Y <<Indicates loopback is supported
MIB retrieval support: Y
Maximum PDU size: 1500
Operational status:
Port status: Operational
Loopback status: Remote <<Indicates master
Interface mis-wired: N
For more information on Ethernet OAM configuration and commands, see the Configuring Ethernet OAM
and Ethernet OAM Commands on the Cisco ASR 9000 Series Router modules in the Cisco ASR 9000 Series
Aggregation Services Router Interface and Hardware Component Configuration Guide and Cisco ASR 9000
Series Aggregation Services Router Interface and Hardware Component Command Reference respectively.
Cisco ASR 9000 Series Aggregation Services Router nV System Configuration Guide, Release 5.3.x
29
Configuring the Satellite Network Virtualization (nV) System
Ethernet Link OAM
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