Installation guide

Software Configuration 5-17

Additional Configuration Tasks

Router(config-if)# ip address 10.1.15.1 255.255.255.0

Router(config-if)#

Step 7 Add any additional conﬁguration subcommands required to enable routing

protocols and adjust the interface characteristics. Refer to the Cisco IOS

conﬁguration guides and command references for more information on

conﬁguration subcommands.

Step 8 When you have completed the conﬁguration, press Ctrl-Z to exit conﬁguration

mode.

Step 9 Write the new conﬁguration to memory, as follows:

Router# write memory

The system displays a conﬁrmation message when the conﬁguration is saved.

Step 10 Enter the disable command to return to the user level:

Router# disable

Router>

Step 11 Enter the show commands to check the conﬁguration of the interface.

This completes the procedure to conﬁgure a channelized E1 interface.

Conﬁguring the ISDN BRI Interface

If your router has a ISDN BRI network processor module installed, you need to conﬁgure

the ISDN BRI ports.

The BRI interface is conﬁgured to allow connection to ISDN WANs through an NT1

device.

Take the following steps to conﬁgure the BRI interfaces:

Step 1 Respond as follows to the prompts, substituting the correct IP address and

number of subnet bits for your site:

Configuring interface BRI0:

Is this interface in use? [yes]:

Configure IP on this interface? [yes]:

IP address for this interface: 172.16.21.15

Number of bits in subnet field [0]: