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

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Usage guidelines
An E1-F interface in framed mode supports both CRC4 and no-CRC4 framing formats, where CRC4
supports four-bit CRC on physical frames but no-CRC4 does not.
Examples
# Set the framing format of E1-F interface Serial 2/0 to CRC4.
<Sysname> system-view
[Sysname] interface serial 2/0
[Sysname-Serial2/0] fe1 frame-format crc4
fe1 idlecode
Use fe1 idlecode to set the line idle code on the E1-F interface. Two types of line idle code are available:
0x7E and 0xFF.
Use undo fe1 idlecode to restore the default.
Syntax
fe1 idlecode { 7e | ff }
undo fe1 idlecode
Default
The line idle code on the E1-F interface is 0x7E.
Views
E1-F interface view
Default command level
2: System level
Parameters
7e: Sets the line idle code to 0x7E.
ff: Sets the line idle code to 0xFF.
Usage guidelines
The line idle code is sent in the timeslots that are not bundled into the logical channels on the interface.
Examples
# Set the line idle code to 0x7E on E1-F interface Serial 2/0.
<Sysname> system-view
[Sysname] interface serial 2/0
[Sysname-Serial2/0] fe1 idlecode 7e
fe1 itf
Use fe1 itf to set the type of and the number of interframe filling tags on the E1-F interface. Two types of
interframe filling tag are available: 0x7E and 0xFF.
Use undo fe1 itf to restore the default.
Syntax
fe1 itf { number number | type { 7e | ff } }