Configuring global settings for cfm, Configuring global, Settings for cfm – Brocade 6910 Ethernet Access Switch Configuration Guide (Supporting R2.2.0.0) User Manual
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Brocade 6910 Ethernet Access Switch Configuration Guide
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Connectivity Fault Management
7. Enable continuity check and cross-check operations, and configure AIS parameters using the
Configure MA – Configure Details screen (see
"Configuring CFM Maintenance Associations"
).
Other configuration changes may be required for your particular environment, such as adjusting
the interval at which continuity check messages are sent (see
), or setting the start-up delay for the cross-check operation (see
). You can also enable SNMP traps for events discovered by continuity check
messages or cross-check messages (see
"Configuring Global Settings for CFM"
).
Configuring Global Settings for CFM
Use the Administration > CFM (Configure Global) page to configure global settings for CFM, such as
enabling the CFM process on the switch, setting the start-up delay for cross-check operations,
configuring parameters for the link trace cache, and enabling traps for events discovered by
continuity check messages or cross-check messages.
CLI References
•
Parameters
These parameters are displayed:
Global Configuration
•
CFM Status – Enables CFM processing globally on the switch. (Default: Enabled)
To avoid generating an excessive number of traps, the complete CFM maintenance structure
and process parameters should be configured prior to enabling CFM processing globally on the
switch. Specifically, the maintenance domains, maintenance associations, and maintenance
end-points (MEPs) should be configured on each participating bridge using the Configure MD
page (see
"Configuring CFM Maintenance Domains"
), and the Configure MEP page (see
).
When CFM is enabled, hardware resources are allocated for CFM processing.
•
MEP Cross Check Start Delay – Sets the maximum delay that a device waits for remote MEPs
to come up before starting the cross-check operation. (Range: 1-65535 seconds; Default: 10
seconds)
This parameter sets the time to wait for a remote MEP to come up, and the switch starts
cross-checking the list of statically configured remote MEPs in the local maintenance domain
(Configure Remote MEP page, see
"Configuring Remote Maintenance End Points"
) against the
MEPs learned through continuity check messages (CCMs).
The cross-check start delay should be configured to a value greater than or equal to the
continuity check message interval to avoid generating unnecessary traps (see
LInk Trace Cache Settings
•
Link Trace Cache – Enables caching of CFM data learned through link trace messages.
(Default: Enabled)
A linktrace message is a multicast CFM frame initiated by a MEP, and forwarded from MIP to
MIP, with each MIP generating a linktrace reply, up to the point at which the linktrace message
reaches its destination or can no longer be forwarded.