Cisco NM-1A-E3, User Manual, Page: 7 / 26

Configuring the Cisco NM-1A-T3/E3 Network Module
How to Configure the ATM T3/E3 Network Module
7
Cisco IOS Release 12.4(15)T
Enabling the ATM Interface
To enable the ATM T3/E3 interface, perform the following tasks, starting in global configuration mode.
SUMMARY STEPS
1. interface ATM slot
2.
atm clock internal
3.
no shut down
DETAILED STEPS
Configuring PVCs
To use a PVC, you must configure the PVC into both the router and the ATM switch. PVCs remain active
until the circuit is removed from either configuration.
To configure a PVC, perform these tasks:
•
Creating a PVC
•
Mapping a Protocol Address to a PVC
•
Configuring the AAL and Encapsulation Type
• Configuring PVC Traffic Parameters
•
Setting PVC Watermarks, page 10
Command or Action Purpose
Step 1
interface ATM slot
Example:
Router(config)# interface ATM 1
Enters interface configuration mode.
Step 2
atm clock internal
Example:
Router(config-if)# atm clock internal
Mandatory if the ATM port the network module is
connected to is configured
line . Optional otherwise.
Specifies ATM clock source. Default source is line .
Step 3
no shutdown
Example:
Router(config)# no shutdown
(Optional) Enables the ATM interface, thereby beginning
the segmentation and reassembly (SAR) operation on the
interface. The ATM interface is enabled by default.