Fe1 Loopback - 3Com 3C13618 Command Reference Manual

no-crc4: Adopts no-CRC4 as the frame format for the E1-F interface..
Description
Using the fe1 frame-format command, you can configure frame format for an E1-F
interface. Using the undo fe1 frame-format command, you can restore the default
frame format of the interface.
By default, E1-F interfaces use no-crc4.
Example
# Set the frame format for the E1-F interface to CRC4.
[3Com-Serial0]fe1 frame-format crc4

3.4.5 fe1 loopback

Syntax
fe1 loopback { local | remote }
undo fe1 loopback [ local | remote ]
View
E1-F interface view
Parameter
local: Places the interface in local loopback.
remote: Places the interface in remote loopback.
Description
Using the fe1 loopback command, you can configure an E1-F interface in local or
remote loopback. Using the undo fe1 loopback command, you can disable the local
and remote loopback on the interface.
By default, the interfaces are not placed in local or remote loopback.
Local loopback and remote loopback are used for testing the state of interface or
cable itself. These functions should be disabled in normal cases. On an interface,
using this command but with different arguments can respectively enable local
loopback and remote loopback, but these two functions cannot be enabled at the
same time.
Interface Management
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