Cisco 2620 User Manual

3-55
Software Configuration Guide for Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series Routers
OL-1957-04
Chapter3 Configuring with the Command-Line Interface
Configuring the Digital Modem Network Module for the Cisco 3640 Router
Configure the LAN Interface
The next task you need to perform is to configure the LAN interfaces on your Cisco 3600 series router.
For the purpose of this procedure, we are showing how to configure an Ethernet interface. If the interface
you are configuring is different, refer to the “Configuring LAN Interfaces” chapter in the Cisco IOS
Release 11.3 Configuration Fundamentals Configuration Guide or to the configuration notes that
shippedwith your module.
To configure an Ethernet interface, perform the following tasks, beginning in global configuration mode:
Note The Ethernet and loopback interfaces should be on different subnets.
Create the Group Asynchronous Interface
A group asynchronous interface is a parent interface that applies protocol characteristics to specified,
associated asynchronous interfaces. After you create a group asynchronous interface, all associated
asynchronous interfaces (called members) can be configured through it. Group asynchronous interfaces
can speed configuration time and help you maintain interface configuration consistency.
To configure a group asynchronous interface, perform the following tasks, beginning in global
configuration mode:
Command Description
Step1
interface ethernet slot/port
Select the Ethernet interface.
Step2
ip address ip-address ip-address
mask
Assign an IP address and subnet mask to
the Ethernet interface.
Step3
no shutdown
Enable this interface
Command Description
Step1
interface group-async number
Create a group asynchronous interface.
Step2
ip unnumbered Loopback number
Enable IP processing on the loopback
interface without assigning an explicit IP
address to the interface.
Step3
encapsulation ppp
Set the Point-to-Point Protocol (PPP) as the
encapsulation method used by this
interface.
Step4
async mode interactive
Enable SLIP and PPP EXEC commands on
this interface.
Step5
peer default ip address pool
name
Specify an IP address from the defined IP
address pool to be returned to a remote peer
connecting to this interface.
Step6
no cdp enable
Disable CDP on this interface.

Cisco 2620 Specifications

General

Brand	Cisco
Model	2620
Category	Network Router
Language	English