Troubleshooting guide

Troubleshooting the CMTS
4-43
The following output displays:
Figure 4-3 show cable flap-list sort-time Command Output
4. To sort the flap list statistics by the cable upstream interface on which the CM
flap occured, use the show cable flap-list sort-interface command in
Privileged EXEC mode as shown in the following example:
RDN#show cable flap-list sort-interface
The following output displays:
Figure 4-4 show cable flap-list sort-interface Command Output
Table 4-1 identifies the flap list command output column field identifications:
Table 4-1 Flap List Command Output Identifications
Field Identification
MAC ID Lists the MAC addresses of the CMs sorted by the flap rate or most
recent flap time. The first six digits in the CM MAC address indicate
the vendor ID of the CM manufacturer, followed by six digits
indicating a unique host address. Each CM MAC address is unique.
Cable IF Detects the cable interface up/down flap. This is the cable interface
on the BSR 64000 DOCSIS module or BSR 1000. It denotes the
DOCSIS module slot number (BSR 64000), the downstream and
the upstream port number. The flap list data can be sorted based
on the upstream port number which is useful when isolating reverse
path problems unique to certain combining groups.