Linksys WCM300 Cisco Cable Wideband Solution Design and Implementation Guide, - Page 79

Troubleshooting Wideband Cable Modems, Pinging a Wideband Cable Modem

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Chapter 5 Monitoring and Troubleshooting Wideband Components Troubleshooting Wideband Components Router# show hw-module bay 1/0/0 mapping wideband-channel SPA 1/0/0 1/0/0 1/0/0 1/0/0 1/0/0 1/0/0 1/0/0 1/0/0 1/0/0 1/0/0 1/0/0 1/0/0 WB channel 0 1 2 3 4 5 6 7 8 9 10 11 RF channel 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 BW % 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 A channel-bonded wideband channel is associated with at least two RF channels depending on the wideband channel's configuration. The cable rf-channel command associates an RF channel with a wideband channel. The bandwidth percent (BW %) of each RF channel used for the wideband channel is 100 percent by default but is configurable with the cable rf-channel command. Troubleshooting Wideband Cable Modems This section describes troubleshooting techniques for wideband cable modems. It includes the following sections: • Pinging a Wideband Cable Modem, page 5-19 • Verifying That a Wideband-Capable Cable Modem is Registered as a Wideband Modem, page 5-20 • Verifying Other Information for Wideband Cable Modems, page 5-21 Pinging a Wideband Cable Modem To determine whether a wideband cable modem or any DOCSIS cable CPE device is reachable from the CMTS at the DOCSIS MAC layer, use the ping docsis command with either a MAC address or IP address. For example: Router# ping docsis 1.11.0.5 Queueing 5 MAC-layer station maintenance intervals, timeout is 25 msec: !!!!! Success rate is 100 percent (5/5) OL-10705-02 Cisco Cable Wideband Solution Design and Implementation Guide, Release 1.0 5-19

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5-19
Cisco Cable Wideband Solution Design and Implementation Guide, Release 1.0
OL-10705-02
Chapter 5
Monitoring and Troubleshooting Wideband Components
Troubleshooting Wideband Components
Router#
show hw-module bay 1/0/0 mapping wideband-channel
SPA
WB
RF
BW %
channel
channel
1/0/0
0
0
100
1
100
1/0/0
1
2
100
3
100
1/0/0
2
4
100
5
100
1/0/0
3
6
100
7
100
1/0/0
4
8
100
9
100
1/0/0
5
10
100
11
100
1/0/0
6
12
100
13
100
1/0/0
7
14
100
15
100
1/0/0
8
16
100
17
100
1/0/0
9
18
100
19
100
1/0/0
10
20
100
21
100
1/0/0
11
22
100
23
100
A channel-bonded wideband channel is associated with at least two RF channels depending on the
wideband channel’s configuration. The
cable rf-channel
command associates an RF channel with a
wideband channel. The bandwidth percent (BW %) of each RF channel used for the wideband channel
is 100 percent by default but is configurable with the
cable rf-channel
command.
Troubleshooting Wideband Cable Modems
This section describes troubleshooting techniques for wideband cable modems. It includes the following
sections:
•
Pinging a Wideband Cable Modem, page 5-19
•
Verifying That a Wideband-Capable Cable Modem is Registered as a Wideband Modem, page 5-20
•
Verifying Other Information for Wideband Cable Modems, page 5-21
Pinging a Wideband Cable Modem
To determine whether a wideband cable modem or any DOCSIS cable CPE device is reachable from the
CMTS at the DOCSIS MAC layer, use the
ping docsis
command with either a MAC address or IP
address. For example:
Router#
ping docsis 1.11.0.5
Queueing 5 MAC-layer station maintenance intervals, timeout is 25 msec:
!!!!!
Success rate is 100 percent (5/5)