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Log Reference

AR500, AR510, and AR530 V200R007

This document supports all the logs of device, including the parameters, meaning, possible causes and solution.
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MSTP/4/LOOP_GUARD

MSTP/4/LOOP_GUARD

Message

MSTP/4/LOOP_GUARD:MSTP process [process-id] Instance[instance-id]'s LOOP-Protection port [port-name] did not receive message in prescriptive time!

Description

The port that was enabled with the loop protection function in the instance did not receive a BPDU within the specified period.

Parameters

Parameter Name Parameter Meaning
[process-id] indicates the ID of an MSTP instance.
[instance-id] indicates the ID of an instance.
[port-name] indicates the port enabled with the loop protection function.

Possible Causes

The loop protection port did not receive the BPDU within the specified period.

Procedure

  1. Find out the reason why the BPDU is not received.
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Updated: 2019-05-29

Document ID: EDOC1000097294

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