R2511-HP MSR Router Series Layer 2 - WAN Command Reference(V5)

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Default
The SDLC modulus is 8.
Views
Synchronous serial interface view
Default command level
2: System level
Parameters
8: Specifies the modulus value to be 8.
128 : Specifies the modulus value to be 128.
Usage guidelines
Like X.25, SDLC uses the modulus method to number frames. All frames sent are numbered incrementally
and await an acknowledgment. When the frame number reaches the configured value (called "modulus
value"), subsequent frames are numbered from 1 again. For example, if the modulus value is set to 8,
frames are numbered …4, 5, 6, 7, 0, 1, ...
SDLC uses 8 as the modulus value.
Examples
# Restore the modulus value of SDLC to the default setting on Serial 2/0.
<Sysname> system-view
[Sysname] interface serial 2/0
[Sysname-Serial2/0] undo sdlc modulo
sdlc sap-map local
Use sdlc sap-map local to configure the local SAP address to be used in the LLC2 frames converted from
SDLC frames.
Use undo sdlc sap-map local to restore the system default.
Syntax
sdlc sap-map local lsap sdlc-addr
undo sdlc sap-map local lsap sdlc-addr
Default
The local SAP address used in SDLC-to-LLC2 frame format conversion is 0x04.
Views
Synchronous serial interface view
Default command level
2: System level
Parameters
lsap: SAP address in the range of 0x01 to 0xFE.
sdlc-addr: SDLC address in the range of 0x01 to 0xFE.