Cisco ASR 920 series Configuration Guide Ethernet Router

Feature Information for Configuring Ethernet CFM
The following table provides release information about the feature or features described in this module. This
table lists only the software release that introduced support for a given feature in a given software release
train. Unless noted otherwise, subsequent releases of that software release train also support that feature.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support.
To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
Table 13: Feature Information for Configuring Ethernet CFM
Feature InformationReleasesFeature Name
This feature was introduced on the
Cisco ASR 920 Series Aggregation
Services Router
(ASR-920-12CZ-A,
ASR-920-12CZ-D,
ASR-920-4SZ-A,
ASR-920-4SZ-D).
Cisco IOS XE Release 3.13.0SConfiguring Ethernet CFM
Glossary
CCM—continuity check message. A multicast CFM frame that a MEP transmits periodically to ensure
continuity across the maintenance entities to which the transmitting MEP belongs, at the MA level on which
the CCM is sent. No reply is sent in response to receiving a CCM.
EVC—Ethernet virtual connection. An association of two or more user-network interfaces.
fault alarm—An out-of-band signal, typically an SNMP notification, that notifies a system administrator of
a connectivity failure.
inward-facing MEP—A MEP that resides in a bridge and transmits to and receives CFM messages from the
direction of the bridge relay entity.
maintenance domain—The network or part of the network belonging to a single administration for which
faults in connectivity are to be managed. The boundary of a maintenance domain is defined by a set of DSAPs,
each of which may become a point of connectivity to a service instance.
maintenance domain name—The unique identifier of a domain that CFM is to protect against accidental
concatenation of service instances.
MEP—maintenance endpoint. An actively managed CFM entity associated with a specific DSAP of a service
instance, which can generate and receive CFM frames and track any responses. It is an endpoint of a single
MA, and terminates a separate maintenance entity for each of the other MEPs in the same MA.
MEP CCDB—A database, maintained by every MEP, that maintains received information about other MEPs
in the maintenance domain.
Carrier Ethernet Configuration Guide (Cisco ASR 920 Series)
282
Configuring Ethernet CFM
Feature Information for Configuring Ethernet CFM

Cisco ASR 920 series Specifications

General

Brand	Cisco
Model	ASR 920 series
Category	Network Router
Language	English