Customizing The Cable Access Router Interface - Cisco uBR900 Series Configuring

Customizing the Cable Access Router Interface

voice-port 0
!
!
voice-port 1
!
!
interface Ethernet0
!
interface cable-modem0
!
ip classless
no ip http server
!
line con 0
line vty 0 4
!
end
Customizing the Cable Access Router Interface
Different geographical regions and different cable plants use different frequency bands. The
Cisco uBR900 series cable access router uses a built-in default frequency scanning feature to address
this issue. After the cable access router finds a successful downstream frequency channel, it saves
the channel and power setting to NVRAM. The cable access router recalls this value the next time it
needs to synchronize its frequency or register with the cable service provider's CMTS.
However, you can customize the cable access router's interface configuration if you need to deviate
from the default setting that ships with the unit. For example, you might need to specify a different
compliant mode, modify the saved downstream channel setting and upstream power value, or enable
a faster downstream search algorithm.
Note
To customize the cable access router interface, perform the following tasks, starting in global
configuration mode:
Step Command
1 uBR924(config)#interface cable-modem 0
2 uBR924(config-if)#cable-modem compliant bridge
44 Cisco IOS Release 12.0(7)T
no ip address
no ip directed-broadcast
no ip route-cache
bridge-group 59
bridge-group 59 spanning-disabled
no ip address
no ip directed-broadcast
no ip route-cache
no keepalive
cable-modem downstream saved channel 699000000 36
bridge-group 59
bridge-group 59 spanning-disabled
transport input none
login
Most cable network scenarios will not require you to use these commands.
Purpose
Specify cable access router interface 0.
Enable DOCSIS-compliant bridging.