Cisco Systems uBR7246 Manual De Usuario

Voice, Video, and Home Applications Configuration Guide

Validation Tips

To verify that a cable modem insertion interval has been set, enter the command more 
system:running-config and look for the cable interface configuration information as shown in this 
command output excerpt:

router# more system:running-config

Building configuration...

 

Current configuration:

!

interface Cable6/0

 ip address 1.1.1.1 255.255.255.0

 no keepalive

 cable insertion-interval 2000

 cable downstream annex B

 cable downstream modulation 64qam

 cable downstream interleave-depth 32

 cable downstream symbol-rate 5056941

 cable upstream 0 frequency 15008000

 cable upstream 0 fec

 cable upstream 0 scrambler

 no cable upstream 0 shutdown

!

Troubleshooting Tips

If you are having trouble, make sure that you entered the correct slot and port numbers when you 
typed the command.

Most of the default values for the commands described in this document are adequate to configure 
the Cisco uBR7246. The following example shows the minimum configuration necessary to enable 
this feature:

! Enter the global configuration mode.

configure terminal 

!

!Enter the cable interface configuration mode. This example shows that the 

!Cisco MC11 card is in the 6th slot or bottom slot of the Cisco uBR7246 chassis.

interface cable 6/0

!

!Configure the upstream data frequency. In this example, for channel 0, the frequency 

is 15, 800 MhZ, or 15,800,000 Hz.

cable u0 1580000 

!Enable cable interface.

no cable upstream 0 shutdown 

!

Enable router interface.

no shutdown

!Set interface’s IP address

ip address <ipaddr> <subnet mask>

end