R3303-HP HSR6800 Routers Interface Command Reference

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[Sysname] interface serial 2/0/0
[Sysname-Serial2/0/0] fe1 itf number 5
fe1 loopback
Use fe1 loopback to set the E1-F interface in a loopback mode.
Use undo fe1 loopback to restore the default.
Syntax
fe1 loopback { local | payload | remote }
undo fe1 loopback
Default
Loopback is disabled.
Views
E1-F interface view
Default command level
2: System level
Parameters
local: Sets the interface in internal loopback mode.
payload: Sets the interface in external payload loopback mode.
remote: Sets the interface in external loopback mode.
Usage guidelines
Loopback is mainly used to check the condition of interfaces or cables. Disable loopback in other cases.
The three loopback modes cannot be used at the same time on an E1-F interface.
Examples
# Set E1-F interface Serial 2/0/0 in internal loopback mode.
<Sysname> system-view
[Sysname] interface serial 2/0/0
[Sysname-Serial2/0/0] fe1 loopback local
fe1 timeslot-list
Use fe1 timeslot-list to bundle timeslots on the E1-F interface.
Use undo fe1 timeslot-list to restore the default.
Syntax
fe1 timeslot-list list
undo fe1 timeslot-list
Default
All the timeslots on the E1-F interface are bundled to form a 1984 kbps interface.