Command Reference Guide

3Com Router 5000 Family and Router 6000 Family frame-format (CE1/PRI Interface) ● 201
Command Reference
frame-format (CE1/PRI Interface)
Purpose Use the frame-format command to set the frame format on the CE1 interface.
Use the undo frame-format command to restore the default, or no-crc4.
Syntax frame-format { crc4 | no-crc4 }
undo frame-format
Parameters crc4
Sets the frame format on the CE1 interface to CRC4.
no-crc4
Sets the frame format on the CE1 interface to
no-CRC4.
Example Set the frame format on the interface E1 3/0/0 to CRC4.
[3Com -E1 3/0/0] frame-format crc4
View This command can be used in the following views:
■ CE1/PRI Interface view
Description A CE1/PRI interface in CE1 mode supports both CRC4 and no-CRC4 frame formats.
Among them, CRC4 supports four-bit cyclic redundancy check (CRC) on physical
frames whereas no-CRC4 does not.