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Cisco 12000 Series Internet Router Configuration Guide for Cisco IOS Release 12.0S
Chapter 2 Basic Configuration of the Cisco 12000 Series Internet Router
Route Processing
Configuring an ATM Line Card
To configure an ATM line card, perform the following procedure. The IP address and subnet mask are
examples only. You will need to obtain this information from your network administrator.
Additional configuration tasks can be performed for the line card in interface configuration mode. Refer
to the installation note provided with the line card for additional information.
In the following example, an ATM line card is being configured to use IP.
Configuring interface ATM1/0:
Is this interface in use?: yes
Configure IP on this interface?: yes
IP address for this interface: 1.1.1.2
Number of bits in subnet field: 0
Class A network is 1.0.0.0, 0 subnet bits; mask is 255.0.0.0
Note You might have to configure additional parameters for the installed ATM line cards if you
want to use all their capabilities. For example, additional steps are required to configure
permanent virtual circuits (PVCs).
Route Processing
In Cisco IOS Release 12.0(22)S, the Performance Route Processor (PRP) was introduced to replace the
Gigabit Route Processor (GRP). The PRP provides a faster processor, multilayer cache, improved fabric
interface for faster communication between PRP and line cards, and larger memory capacity.
The PRP is designed to support all Cisco IOS software features that are supported on the GRP. Certain
exceptions apply regarding High Availability. Refer to the Cisco IOS Release 12.0S Release Notes for
more information regarding supported features.
For more information regarding the PRP, refer to the PRP Feature Module at the following location:
http://wwwicisco.com/univercd/cc/td/doc/product/software/ios120/120newft/120limit/120s/120s22/prp
htm
Command Purpose
Step 1
Router(config)# interface atm 1/0
Enters interface configuration mode on the ATM interface located
in slot 3 and port 0.
Step 2
Router(config-if)# ip address 1.1.1.2
255.0.0.0
Specifies the IP address and subnet mask for the interface.
Step 3
Router(config-if)# no shutdown
Changes the shutdown state to up and enables the interface. If you
configure an interface using the command line interface, you must
use this command to enable the interface. When you use the setup
command facility, this is performed automatically.
