R2511-HP MSR Router Series Interface Configuration Guide(V5)

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Configuring an E1-F interface in unframed mode
Step Command Remarks
1. Enter system view.
system-view N/A
2. Enter E1-F interface view.
interface serial interface-number N/A
3. Configure the interface to
operate in unframed mode.
fe1 unframed The default is framed mode.
4. Set other interface
parameters.
See "Configuring other E1-F
interface parameters."
Optional.
Configuring other E1-F interface parameters
Step Command Remarks
1. Enter system view.
system-view
N/A
2. Enter E1-F interface view.
interface serial serial-number N/A
3. Configure the interface
description.
description text
Optional.
By default, the description of an
interface is interface-name
Interface.
4. Set the line code format.
fe1 code { ami | hdb3 }
Optional.
The default is HDB3.
5. Set the clock mode.
fe1 clock { master | slave }
Optional.
The default is slave, which is line
clock.
6. Enable automatic clock mode
change.
clock-change auto
Optional.
Disabled by default.
7. Set the cable type.
fe1 cable { long | short }
Optional.
The long keyword applies by
default.
8. Configure the CRC mode.
crc { 16 | 32 | none }
Optional.
16-bit CRC by default.
9. Set the framing format.
fe1 frame-format { crc4 | no-crc4 }
Optional.
The default is no-CRC4.
10. Set the line idle code type.
fe1 idlecode { 7e | ff }
Optional.
The default is 0x7E.
11. Set the interframe filling tag
type.
fe1 itf type { 7e | ff }
Optional.
The default is 0x7E.
12. Set the number of interframe
filling tags.
fe1 itf number number
Optional.
The default is 4.
13. Enable loopback and set the
loopback mode.
fe1 loopback { local | payload |
remote }
Optional.
Loopback is disabled by default.