Crc - HP 6600 Command Reference Manual

Default command level
2: System level
Parameters
master: Sets the clock mode of the POS interface to master, which means to use the internal clock signal
of the POS interface card.
slave: Sets the clock mode of the POS interface to slave, which means to use line clock signal.
Usage guidelines
If the POS interface is connected to another router, set its clock mode to be different from the mode used
by the remote end. If the POS interface is connected to a SONET/SDH device, which provides higher
clock precision, always set its clock mode to slave.
Examples
# Set the clock mode of interface POS 2/1/0 to master.
<Sysname> system-view
[Sysname] interface pos 2/1/0
[Sysname-Pos2/1/0] clock master

crc

Use crc to set the CRC length on the POS interface.
Use undo crc to restore the default.
Syntax
crc { 16 | 32 }
undo crc
Default
The CRC length is 32 bits.
Views
POS interface view
Default command level
2: System level
Parameters
16: Sets the cyclic redundancy check (CRC) length to 16 bits.
32: Sets the CRC length to 32 bits.
Usage guidelines
The CRC length must be the same on both ends.
Examples
# Set the CRC length on interface Pos 2/1/0 to 16 bits.
<Sysname> system-view
[Sysname] interface pos 2/1/0
[Sysname-Pos2/1/0] crc 16
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