R2511-HP MSR Router Series Interface Command Reference(V5)

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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 in internal loopback mode.
<Sysname> system-view
[Sysname] interface serial 2/0
[Sysname-Serial2/0] 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.
Views
E1-F interface view
Default command level
2: System level
Parameters
list: Specifies timeslots to be bundled. They are numbered 1 through 31. You can specify a single timeslot
by specifying its number, a range of timeslots by specifying a range in the form of number1-number2, or
several discrete timeslots by specifying number1, number2-number3.
Usage guidelines
Timeslot bundling results in interface rate change. For example, after you bundle timeslots 1 through 10
on the interface, the interface rate becomes 10 × 64 kbps.
Only one channel set can be created on an E1-F interface, and this channel set is associated with the
current synchronous serial interface. On a CE1/PRI interface, however, you can create multiple channel
sets; for each of them, the system automatically creates a synchronous serial interface.
Timeslot 0 on E1-F interfaces is used for transmitting synchronization information. A bundling operation
only involves timeslots 1 through 31.
When the E1-F interface is operating in unframed mode, the fe1 timeslot-list command is invalid.
Examples
# Bundle timeslots 1, 2, 5, 10 through 15, and 18 on E1-F interface Serial 2/0.
<Sysname> system-view