Specifications

5-18
Cisco Cable Wideband Solution Design and Implementation Guide, Release 1.0
OL-10705-02
Chapter 5 Monitoring and Troubleshooting Wideband Components
Troubleshooting Wideband Components
Verifying That a Wideband Channel is Configured Correctly
To verify whether a wideband channel is configured correctly, use the show hw-module bay command
with the wideband-channel keyword and the association, config, or mapping keywords. The following
examples show the output for association keyword:
Router# show hw-module bay 1/0/0 association wideband-channel 0
WB BG Bundle NB NB chan Reserved Avail
channel ID num channel ID CIR CIR
Wideband-Cable1/0/0:0 24 123 Cable5/0/1 120 0 0
In the preceding output, the Bundle num field indicates the virtual bundle interface to which the
wideband channel belongs. For a description of each field in the preceding output, see the “show
hw-module bay” section on page 5-7.
The wideband channel and the primary downstream channel (NB channel) must be members of the same
virtual bundle interface. The CMTS running configuration file shows the virtual bundle (cable bundle)
for the primary downstream channel (Cable5/0/1):
interface Cable5/0/1
no ip address
load-interval 30
no cable packet-cache
cable bundle 123
cable downstream channel-id 120
...
The downstream modular-cable rf-channel command specifies the RF channels that are available for
wideband channels on a fiber node. If a wideband channel attempts to use an RF channel that has not
been made available for use on the fiber node, a misconfiguration error occurs. In this case, the show
hw-module bay command displays the following error message:
Router# show hw-module bay 1/0/0 association wideband-channel
WB BG Bundle NB NB chan Reserved Avail
channel ID num channel ID CIR CIR
Wideband-Cable1/0/0:0 RF channel mismatch with Fiber Node 1
The following example shows the show hw-module bay output for the config keyword:
Router# show hw-module bay 1/0/0 config wideband-channel
WB BG Bundle WB Host Primary
channel ID num Slot/Subslot BG
Wideband-Cable1/0/0:0 24 123 5/0 Yes
Wideband-Cable1/0/0:1 25 123 5/0 Yes
Wideband-Cable1/0/0:2 26 123 5/0 Yes
Wideband-Cable1/0/0:3 27 123 5/0 Yes
Wideband-Cable1/0/0:4 28 123 5/0 Yes
Wideband-Cable1/0/0:5 29 123 5/0 Yes
Wideband-Cable1/0/0:6 30 123 5/0 Yes
Wideband-Cable1/0/0:7 31 123 5/0 Yes
Wideband-Cable1/0/0:8 32 0 5/0 Yes
Wideband-Cable1/0/0:9 33 0 5/0 Yes
Wideband-Cable1/0/0:10 34 0 5/0 Yes
Wideband-Cable1/0/0:11 35 0 5/0 Yes
In the preceding output, each wideband channel that will be used should be configured as a member of
a virtual bundle interface. Channels 8 through 11 are not members of a virtual bundle interface.
The following example shows the show hw-module bay output for the mapping keyword: