Cisco cBR 8 User Manual

How to Monitor and Troubleshoot Using Flap Lists
Displaying the Flap List Using the show cable flap-list Command
To display the current contents of the flap list, use the show cable flap-list command in privileged EXEC
mode. This command has the following syntax:
• show cable flap-list—Displays the complete flap list.
• show cable flap-list sort-interface—Displays the complete flap list sorted by cable interface.
• show cable flap-list cable interface upstream port—Displays the flap list for a specific cable interface,
or for a specific upstream port on that cable interface.
To change the way the output is sorted, add one of the following optional keywords:
• sort-flap—Sorts the output by the number of times that the cable modem has flapped.
• sort-time—Sorts the output by the most recent time that the cable modem flapped.
The following example shows typical output of the show cable flap-list command.
Router# show cable flap-list
Mac Addr CableIF Ins Hit Miss CRC P-Adj Flap Time
0010.9500.461f C1/0 U1 56 18857 887 0 1 116 Jun 1 14:09:12
0010.9500.446e C1/0 U1 38 18686 2935 0 1 80 Jun 2 19:03:57
0010.9500.38ec C1/0 U2 63 18932 1040 0 8 138 Jun 2 23:50:53
0010.9500.4474 C1/0 U2 65 18913 1053 0 3 137 Jun 2 09:30:09
0010.9500.4672 C1/0 U2 56 18990 2327 0 6 124 Jun 2 10:44:14
0010.9500.38f0 C1/0 U2 50 18964 2083 0 5 111 Jun 2 20:46:56
0010.9500.e8cb C1/0 U2 0 6537 183 0 1 5 Jun 2 22:35:48
0010.9500.38f6 C1/0 U3 50 19016 2511 0 2 104 Jun 2 07:46:31
0010.9500.4671 C1/0 U3 43 18755 3212 1 1 89 Jun 1 19:36:20
0010.9500.38eb C1/0 U0 57 36133 1608 0 6 126 Jun 2 20:04:58
0010.9500.3ce2 C1/0 U0 44 35315 1907 0 4 99 Jun 2 16:42:47
0010.9500.e8d0 C1/0 U2 0 13213 246 0 1 5 Jun 3 04:15:30
0010.9500.4674 C1/0 U2 56 36037 2379 0 4 121 Jun 3 00:34:12
0010.9500.4677 C1/0 U2 40 35781 2381 0 4 91 Jun 2 12:14:38
0010.9500.4614 C1/0 U2 40 21810 2362 0 502 586 Jun 2 21:43:02
0010.9500.3be9 C1/0 U2 63 22862 969 0 0 128 Jun 1 14:09:03
0010.9500.4609 C1/0 U2 55 22723 2127 0 0 112 Jun 1 14:08:02
0010.9500.3cb8 C1/0 U2 49 22607 1378 0 0 102 Jun 1 14:08:58
0010.9500.460d C1/0 U3 46 22477 2967 0 2 96 Jun 2 17:03:48
0010.9500.3cba C1/0 U3 39 22343 3058 0 0 81 Jun 1 14:13:16
0010.9500.3cb4 C1/0 U3 38 22238 2936 0 0 79 Jun 1 14:09:26
0010.9500.4612 C1/0 U3 38 22306 2928 0 0 79 Jun 1 14:09:29
Router#
Displaying the Flap List Using the show cable modem flap Command
To display the contents of the flap list for a specific cable modem, use the show cable modem flap command
in privileged EXEC mode. This command has the following syntax:
• show cable modem [ip-address | mac-address] flap—Displays the flap list for a specific cable modem,
as identified by its IP address or MAC address.
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Cisco cBR 8 Specifications

General

Brand	Cisco
Model	cBR 8
Category	Network Router
Language	English