Installation guide

5-21
Cisco uBR7100 Series Universal Broadband Router Software Configuration Guide
OL-2238-03
Chapter 5 Troubleshooting the System
Understanding Show Command Responses
Cable1/0/U0 23 0050.7318.e985 3 no 26.40
Cable1/0/U0 24 0050.7366.1dbd 3 no 26.69
Router# show cable modem cable 1/0 upstream 0
Interface Prim Online Timing Rec QoS CPE IP address MAC address
Sid State Offset Power
Cable1/0/U0 1 offline 2264 -0.50 2 0 209.165.200.2 0090.8330.0214
Cable1/0/U0 2 offline 4137 !-3.50 2 0 209.165.200.9 0050.7366.17d3
Cable1/0/U0 3 init(d) 4136 !-2.50 2 0 209.165.200.0 0050.7366.17ab
Cable1/0/U0 4 init(d) 4138 !-4.75 2 0 209.165.200.0 0050.7366.1803
Cable1/0/U0 5 init(d) 4137 !-2.25 2 0 209.165.200.0 0050.7366.1801
Cable1/0/U0 6 init(o) 2251 -0.25 2 0 209.165.200.3 0090.8330.0213
Cable1/0/U0 7 offline 2264 0.75 2 0 209.165.200.4 0090.8330.020f
Cable1/0/U0 8 offline 2266 -0.50 2 0 209.165.200.5 0090.8330.0211
Cable1/0/U0 9 init(rc) 4662 1.00 2 0 209.165.200.0 00d0.bad3.c459
Router# show cable modem cable 1/0 upstream 0 unregistered
Interface Prim Online Timing Rec QoS CPE IP address MAC address
Sid State Offset Power
Cable1/0/U0 1 offline 2264 -0.50 2 0 209.165.200.2 0090.8330.0214
Cable1/0/U0 2 offline 4137 !-3.50 2 0 209.165.200.9 0050.7366.17d3
Cable1/0/U0 3 init(d) 4136 !-2.75 2 0 209.165.200.0 0050.7366.17ab
Cable1/0/U0 4 init(d) 4137 !-3.25 2 0 209.165.200.0 0050.7366.1803
Cable1/0/U0 5 init(d) 4141 !-2.75 2 0 209.165.200.0 0050.7366.1801
Cable1/0/U0 6 offline 2251 -0.25 2 0 209.165.200.3 0090.8330.0213
Cable1/0/U0 7 offline 2254 -1.00 2 0 209.165.200.4 0090.8330.020f
Cable1/0/U0 8 offline 2248 0.00 2 0 209.165.200.5 0090.8330.0211
Cable1/0/U0 9 init(rc) 4665 -0.50 2 0 209.165.200.0 00d0.bad3.c459
Router# show cable modem cable 1/0 upstream 0 offline
Interface MAC address Prim Previous Offline Rx Rx SM
Sid State Time Power SNR Exhaust
Count
Cable1/0/U0 0050.7366.17d3 2 init(o) Jan 16 20:30:26 !-3.50 ----- 1
Cable1/0/U0 0090.8330.0213 6 init(o) Jan 16 20:30:55 -0.25 ----- 181
Cable1/0/U0 0090.8330.020f 7 init(o) Jan 16 20:31:07 -1.00 ----- 181
Cable1/0/U0 0090.8330.0211 8 init(o) Jan 16 20:31:23 0.00 ----- 181
show cable modem maintenance Command
When a cable modem is detected to be offline by the CMTS—no reply after 16 retries of station
maintenance requests—the cable modem is marked offline. Besides marking the cable modem and SID
state offline, the SID is removed immediately from the CMTS ranging list, and an aging timer is started
to cleanup the SID completely if the cable modem does not attempt to come online within the next
24 hours.
Output fields are described below:
• The SM Exhausted Count value refers to the number of times a cable modem was dropped because
it did not reply to station maintenance requests. A CM is removed from the station maintenance list
after 16 times of periodic ranging opportunity without seeing the RNG_REQ from the modem.
• The SM Aborted Count value refers to the number of times the CM was dropped because its
operational parameters were unacceptable. This includes such reasons as the power level is outside
the acceptable range, or the timing offset keeps changing. The respective times in the command
output indicate when this happened.
Following is a response to the show cable modem maintenance command: