Configuring an E1-IMA Interface
An E1-IMA interface allows ATM cells to transmit over the E1-IMA links.
Applicable Scenario
To transmit ATM cells over a single E1-IMA link, configure attributes of the E1-IMA interfaces on both ends of the E1-IMA link.
By default, these attributes of the E1-IMA interface have default values. To modify the attributes, perform the following operations.
You can create PVC, specify service type, and configure parameters for the E1-IMA link. For details, see ATM Configuration in the NetEngine AR Configuration Guide - WAN Configuration.
Pre-configuration Tasks
Before configuring an E1-IMA interface, complete the following task:
- Register the 4E1-IMA card successfully.
Procedure
- Run system-view
The system view is displayed.
- Run interface atm interface-number
The E1-IMA interface view is displayed.
- Run clock { master | slave }
The clock mode of an E1-IMA interface is configured.
By default, the clock mode of an E1-IMA interface is slave.
When the router is connected to the peer device through E1-IMA interfaces, one E1-IMA interface must work in master clock mode and the other must work in slave clock mode.
- Run frame-format { crc4-adm | no-crc4-adm }
The frame format of an E1-IMA interface is configured.
By default, the frame format of an E1-IMA interface is No-CRC4 ADM.
- Run scramble
The payload scramble function is enabled on the E1-IMA interface.
By default, the payload scramble function is enabled on the E1-IMA interface.
- Run loopback { local | payload | remote }
The loopback mode of an E1-IMA interface is configured.
By default, loopback detection is disabled.