System information

Configuring the CMTS
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4. The default miss threshold for MAC-layer keepalive messages is 6. If you want to
change the threshold number of MAC-layer keepalive message misses that will
result in the CMs being recorded in the flap list, use the cable flap-list
miss-threshold command in Global Configuration mode, as shown below:
MOT(config)#cable flap-list miss-threshold <1-12>
where:
1-12 is the keepalive misses threshold value.
5. To specify the maximum number of CMs that can be recorded in the flap list, use
the cable flap-list size command in Privileged EXEC mode, as shown below:
MOT(config)#cable flap-list size <1-8191>
where:
1-8191 is a number that defines the maximum number of CMs.
6. To remove a CM from the flap list, use the clear cable flap-list command in
Global Configuration mode, as shown below.
MOT(config)#clear cable flap-list [<mac>] | all
where:
mac is the CM MAC address.
Note: A high miss rate can indicate intermittent upstream problems, fiber
laser clipping, or common-path distortion.