Installation guide

2-16

Cisco uBR7100 Series Universal Broadband Router Software Configuration Guide

OL-2238-03

Chapter 2 Configuring the Cisco CMTS for the First Time

Configuring Using the Configuration Mode

Step 5 At the Router(config)# prompt, enter the interface type slot/port command to enter the interface

configuration mode:

Router(config)# interface cable slot/port

Router(config-if)#

Step 6 Set the downstream center frequency to reflect the digital carrier frequency of the downstream RF carrier

(the channel) for the downstream port:

Router (config-int) # cable downstream frequency down-freq-hz

Note This command has no effect on the external upconverter. It is informational only.

Step 7 Activate the downstream port on the cable modem card to support digital data transmission over the HFC

network:

Router (config-int) # no shutdown

Step 8 Enter the fixed center frequency for your downstream RF carrier in Hz and the port number:

Router (config-int) # cable upstream port frequency up-freq-hz

Note Be sure not to select an upstream frequency that interferes with that used for any other upstream

application in your cable plant.

Step 9 Repeat Step 8 for each upstream port on the cable modem card.

Step 10 Activate the upstream port:

Router (config-int) # no cable upstream port shutdown

Step 11 Repeat Step 10 to activate each port used on your cable modem card.

Step 12 Exit to return to the configuration mode:

Router (config-if) # exit

Router (config) #

Step 13 Enter the next interface to configure, following Step 6 through Step 12, or type exit to return to the

enable mode.

Router (config) # exit

Router#

%SYS-5-CONFIG_I: Configured from console by console#

Step 14 Save the configuration to NVRAM:

Router# copy running-config startup-config