Installation guide
2-13
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 setup Facility
Configuring Non-Cable Interfaces
Follow the procedure in this section to configure WAN or LAN interfaces. To configure interface
parameters, have your interface network addresses and subnet mask information ready.
Configuring Ethernet Interfaces
Step 1 In the following example, the system is being configured for an Ethernet LAN using IP. Respond to the
prompts as follows, using your own addresses and mask at the setup prompts:
Configuring interface parameters:
Configuring interface Ethernet0/0:
Is this interface in use? [no]: yes
Configure IP on this interface? [no]: yes
IP address for this interface: 1.1.1.10
Number of bits in subnet field [0]:
Class A network is 1.0.0.0, 0 subnet bits; mask is 255.0.0.0
Step 2 Do not enable Internetwork Package Exchange (IPX) on this interface; IPX is not supported on the
Cisco uBR7100 series CMTS:
Configure IPX on this interface? [no]: no
Step 3 If additional Ethernet interfaces are available in your system, enter their configurations when you are
prompted.
Step 4 Save your settings to NVRAM. (See the “Using the Setup Facility for Cable Interfaces” section on
page 2-17.)
Note You must always manually save the configuration settings to NVRAM whenever they are
modified.
Configuring Synchronous Serial Interfaces
The synchronous serial interfaces are configured to allow connection to WANs through a CSU/DSU.
Complete the following steps to configure the serial ports:
Step 1 To configure serial port 0 enter yes:
Configuring interface Serial0/0:
Is this interface in use? [no]: yes
Step 2 Determine which protocols you want on the synchronous serial interface and enter the appropriate
responses:
Configure IP unnumbered on this interface? [no]:
IP address for this interface: 10.1.1.20
Number of bits in subnet field [0]:
Class A network is 10.0.0.0, 0 subnet bits; mask is 255.0.0.0
Step 3 If additional synchronous serial interfaces are available in your system, enter their configurations when
you are prompted.