Installation guide

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Cisco uBR7100 Series Universal Broadband Router Software Configuration Guide
OL-2238-03
Chapter 2 Configuring the Cisco CMTS for the First Time
Checking Your Settings and Reviewing Your Configuration Changes
Would you like to configure the DHCP server ? [yes/no]: yes
IP address for the DHCP server
[X.X.X.X]: 10.0.0.2
Configure IP on this interface? [no]: yes
IP address for this interface: 10.20.133.65
Subnet mask for this interface [255.0.0.0] : 255.255.255.248
Class A network is 10.0.0.0, 29 subnet bits; mask is /29
The following configuration command script is created:
interface Cable1/0
ip address 10.20.133.65 255.255.255.248
no ip mroute-cache
no keepalive
cable insertion-interval 500
cable downstream annex B
cable downstream modulation 64qam
cable downstream interleave-depth 32
cable downstream frequency 531000000
cable upstream 0 frequency 33808000
cable upstream 0 power-level 0
no cable upstream 0 shutdown
cable helper-address 10.0.0.2
Note For modems to acquire an IP address, they must have direct access to DHCP, TFTP, or TOD servers, or
have a static route set.
Saving Your Configuration Settings
To store the configuration or changes to your startup configuration in NVRAM, enter the
copy running-config startup-config command at the
Router# prompt:
Router# copy running-config startup-config
This command saves the configuration settings you set using configuration mode, the setup facility, or
AutoInstall.
Tip If you do not save your settings, your configuration will be lost the next time you reload the router.
Checking Your Settings and Reviewing Your Configuration
Changes
You can check your settings and review any changes to your configuration using various software
commands.
To view information specific to the hardware and cable interface configuration on your Cisco uBR7100
series CMTS, use show commands.
To verify the downstream center frequency:
Router# show controllers cable slot/port downstream
To verify the current value of an upstream port frequency: