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Continuity Check Operations
ethernet cfm cc ma
interval
This command sets the transmission delay between continuity check
messages (CCMs). Use the no form to restore the default settings.
S
YNTAX
ethernet cfm cc md domain-name ma ma-name
interval interval-level
no ethernet cfm cc ma ma-name interval
domain-name – Domain name. (Range: 1-43 alphanumeric
characters)
ma-name – Maintenance association name. (Range: 1-44
alphanumeric characters)
interval-level – The transmission delay between connectivity check
messages. The setting for this parameter is expressed as levels 4
through 7, which in turn map to specific intervals of time.
(CCM lifetime field options: 4 - 1 second, 5 - 10 seconds,
6 - 1 minute, 7 - 10 minutes).
D
S
EFAULT
ETTING
4 (1 second)
C
M
OMMAND
ODE
Global Configuration
C
U
OMMAND
SAGE
CCMs provide a means to discover other MEPs and to detect
◆
connectivity failures in an MA. If any MEP fails to receive three
consecutive CCMs from any other MEPs in its MA, a connectivity failure
is registered. The interval at which CCMs are issued should therefore be
configured to detect connectivity problems in a timely manner, as
dictated by the nature and size of the MA.
The maintenance of a MIP CCM database by a MIP presents some
◆
difficulty for bridges carrying a large number of Service Instances, and
for whose MEPs are issuing CCMs at a high frequency. For this reason,
slower CCM transmission rates may have to be used.
E
XAMPLE
This example sets the transmission delay for continuity check messages to
level 7 (60 seconds).
Console(config)#ethernet cfm cc md voip ma rd interval 7
Console(config)#
R
C
ELATED
OMMANDS
ethernet cfm cc enable (1582)
– 1581 –
| CFM Commands
C
45
HAPTER
Continuity Check Operations
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