T1 Set Loopback; T1 Set Fdl - H3C MSR 20-20 Command Reference Manual

Related command:
Example

t1 set loopback

Syntax
View
Parameter
Description
Example

t1 set fdl

Syntax
You can configure this command only when the T1 line is working in framed
format (which can be set by using the undo t1 unframed command).
t1 unframed.
# Set the framing format to SF for the first T1 line on interface T3 2/0.
<Sysname> system-view
[Sysname] interface t3 2/0
[Sysname-T3 2/0] t1 1 set frame-format sf
t1 line-number set loopback { local | remote | payload }
undo t1 line-number set loopback
CT3 interface view
line-number: T1 line number in the range 1 to 28.
local: Sets the T1 line in internal loopback mode.
remote: Sets the T1 line in external loopback mode.
remote: Sets the T1 line in payload loopback mode.
Use the t1 set loopback
T3 interface.
Use the
undo t1 set loopback
By default, loopback is disabled on T1 lines.
Loopback is intended for test use. Disable it otherwise.
If a T1 line encapsulated with PPP is placed in loopback mode, it is normal that the
state of the link layer protocol is reported down.
# Enable internal loopback on the first T1 line on interface T3 2/0.
<Sysname> system-view
[Sysname] interface t3 2/0
[Sysname-T3 2/0] t1 1 set loopback local
t1 line-number set fdl { ansi | att | both | none}
undo t1 line-number set fdl
command to set the loopback mode of a T1 line on the
command to disable the T1 line to loop back.
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