How to configure the POS interface of an AR router

You can configure the POS interface of an AR router as follows:

# Before configuring the POS interface, you must register the 1STM1/1STM4/4STM1 interface card. The parameters and configurations of the POS interfaces on both ends must be consistent except for the clock mode.
[Huawei] interface pos 2/0/0
[RouterA-Pos2/0/0] frame-format sonet //Set the frame format of the POS interface to SONET.
[RouterA-Pos2/0/0] link-protocol hdlc //Set the link-layer protocol of the POS interface to HDLC.
[RouterA-Pos2/0/0] clock slave //Set the clock mode of the POS interface to slave.
[RouterA-Pos2/0/0] mtu 1200 //Set the MTU value of the POS interface to 1200.
[RouterA-Pos2/0/0] flag c2 3 //Set the overhead bytes of the POS interface.
[RouterA-Pos2/0/0] flag j0 16byte-mode abc
[RouterA-Pos2/0/0] flag j1 16byte-mode xyz
[RouterA-Pos2/0/0] undo scramble //Disable the load scrambling function of the POS interface.
[RouterA-Pos2/0/0] crc 16 //Set the CRC verification mode of the POS interface to CRC-16.
[Huawei-Pos2/0/0] threshold sd 8 //Set the SD alarm threshold of the POS interface to 10e-8.
[Huawei-Pos2/0/0] threshold sf 5 //Set the SF alarm threshold of the POS interface to 10e-5. The SD alarm threshold must be smaller than the SF alarm threshold.

Run the display interface pos 2/0/0 command to check the configuration and status of the POS interface.
Run the display interface brief command to check the brief information about the POS interface.

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