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Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide
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Chapter4 Troubleshooting the System
Understanding Show Command Responses
See the sample command output below:
router# show cable modem
Interface Prim Online Timing Rec QoS CPE IP address MAC address
Sid State Offset Power
Cable3/0/U0 1 online 2257 0.00 3 0 10.30.128.142 0090.8330.0217
Cable3/0/U0 2 online 2262 *-0.50 3 0 10.30.128.145 0090.8330.020f
Cable3/0/U0 3 online 2260 0.25 3 0 10.30.128.146 0090.8330.0211
Cable3/0/U0 4 online 2256 *0.75 3 0 10.30.128.143 0090.8330.0216
Cable3/0/U0 5 online 2265 *0.50 3 0 10.30.128.140 0090.8330.0214
Cable3/0/U0 6 online 2256 0.00 3 0 10.30.128.141 0090.8330.0215
Cable3/0/U0 7 online 4138 !-1.00 3 1 10.30.128.182 0050.7366.124d
Cable3/0/U0 8 online 4142 !-3.25 3 1 10.30.128.164 0050.7366.1245
Cable3/0/U0 9 online 4141 !-3.00 3 1 10.30.128.185 0050.7366.17e3
Cable3/0/U0 10 online 4142 !-2.75 3 0 10.30.128.181 0050.7366.17ab
Cable3/0/U0 11 online 4142 !-3.25 3 1 10.30.128.169 0050.7366.17ef
The show cable modem indicates when the Cisco uBR7200 series router has detected an unstable
return path for a particular CM and has compensated with a power adjustment. An asterisk appears in
the power adjustment field for a CM when a power adjustment has been made; an exclamation point
appearswhen the CM has reached its maximum power transmit level and cannot increase its power level
any further.
Columns are described below:
•Theprim Sid column reveals the primary (lifeline) service identifier assigned to the cable modem.
•The SID column is the service identifier.
•The Online State column reveals the state of the modem; values include:
–
offline—Cable modem considered offline
–
offlinetime—the time the cable modem went offline;the format is the same as other show cable
modem commands (month, day, time, and year)
–
init (r1)—Cable modem sent initial ranging
–
init (r2)—Cable modem is ranging
–
init (rc)—Cable modem ranging complete
–
init (d)—Dhcp request received
–
init (i)—Dhcp reply received; IP address assigned
–
init (o)—Option file transfer started
–
init (t)—TOD exchange started
–
online—Cable modem registered, enabled for data
–
online(d)—Cable modem registered, but network access for the cablemodem is disabled
–
online(pk)—Cable modem registered, BPI enabled and KEK assigned
–
online(pt)—Cable modem registered, BPI enabled and TEK assigned
–
reject (m)—Cable modem did attempt to register; registration was refused due to bad MIC
–
reject (c)—Cable modem did attempt to register; registration was refused due to bad COS
–
reject (pk)—KEK modem key assignment rejected
–
reject (pt)—TEK modem key assignment rejected
•The Rec Power column contains the nominal receive power in decibels for this SID