User Manual UMN:CLI
V5808
673
CFM OAM Features
The important features provided by 802.1ag CFM OAM are:
• Supports Connectivity Check Message (CCM), LinkTrace (LTM) and LoopBack
messages (LBM)
• Helps service providers assign selected subscribers restricted access to manage all
functions for their own domains
• Fault detection, notification and verification
• Traces the path to another MEP or MIP in the same domain
A CFM maintenance domain (MD) is a management space on a network that is owned
and operated by a single entity and defined by a set of ports internal to it, but at its
boundary. To use CFM OAM, you should create MD. MD is defined by a given MD name
and level that are configured by user. MD level determines the MEPs/MIPs that are
interested in the contents of the CFM frame and through which the CFM frame is allowed
to pass.
To create a CFM Maintenance Domain (MD) and configure its name and level, use the
following command.
onu cfm md DOMAIN level <0-7>
Creates a MD name and specifies a MD’s level
DOMAIN: Maintenance Domain’s name
0-7: MD’s level to use (default: 0)
Deletes the configured MD with a unique name.
Each MD has an index, an unique name and MD level. Several MDs can have same level.
But one single MD cannot have several levels.
MEPs periodically exchange Continuity Check OAM messages to detect loss of continuity
or incorrect network connections. To create a Maintenance Association (MA) with its
name as a service instance for a specific MD and specify the interval of Continuity Check
Messages (CCMs) that are sent by MEPs in the specified MA, use the following
command.
onu cfm ma <1-65535> MA_NAME md
DOMAIN ccm interval { 100ms | 1s |
10s | 1m | 10m | disable }
Specifies a MA for MD and the interval of
sending continuity check messages (CCMs).
1-65535: MA index
MA_NAME: name of MA
DOMAIN: Maintenance Domain’s name
Deletes the configured MA.
There is at least one MA within a signle MD.
To configure a MIP and its level on the VLAN ID, use the following command.
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