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:
