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Alarm Handling

AR100-S, AR110-S, AR120-S, AR150-S, AR160-S, AR200-S, AR1200-S, AR2200-S, and AR3200-S V200R009

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MSTP_1.3.6.1.4.1.2011.5.25.42.4.2.6 hwMstpiPortLoopGuarded

MSTP_1.3.6.1.4.1.2011.5.25.42.4.2.6 hwMstpiPortLoopGuarded

Description

MSTP/2/LGEXP:OID [OID] The LOOP-Protection port did not receive BPDU packets in prescriptive time. (InstanceID=[INTEGER], PortInstanceID=[INTEGER], PortID=[INTEGER], IfIndex=[INTEGER], PortName=[STRING])

A port enabled with loop protection failed to receive BPDUs within a specified period, and was set to be in the Discarding state.

Attribute

Alarm ID Alarm Severity Alarm Type
1.3.6.1.4.1.2011.5.25.42.4.2.6 Major communicationsAlarm(2)

Parameters

Name Meaning

oid

Indicates the MIB object ID of the alarm.

InstanceID

Indicates the instance ID.

PortInstanceID

Indicates the instance ID of the port.

PortID

Indicates the port ID.

IfIndex

Indicates the interface index.

PortName

Indicates the port name.

Impact on the System

The interface will not forward data.

Possible Causes

1.

The peer switch did not send the BPDUs to the local switch within the specified period. The possible cause was that the spanning tree function was disabled on the peer switch.

2.

The links connected to the peer were congested. Check whether the traffic was normal.

Procedure

  1. Run the display stp [ process process-id ] [ instance instance-id ] [ interface { interface-type interface-number [ to interface-number ] }&<1-10> ] [ brief ] command to check whether STP is disabled on the interfaces that are directly connected.

    • If so, go to Step 3.

    • If not, go to Step 2.

  2. Run the display this interface command in the interface view to check the percentage of the rate at which the interface receives packets to the total bandwidth and then determine whether congestion occurs.

    • If so, go to Step 4.

    • If not, go to Step 5.

  3. Run the stp enable command in the interface view to enable STP. Then, check whether the alarm is cleared.

    • If the alarm is cleared, go to Step 6.

    • If the alarm is not cleared, go to Step 2.

  4. Repair the physical link and then check whether the alarm is cleared.

    • If the alarm is cleared, go to Step 6.

    • If the alarm is not cleared, go to Step 5.

  5. Collect alarm information and configuration information, and then contact technical support personnel.
  6. End.

Related Information

None.

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Updated: 2019-05-06

Document ID: EDOC1000174085

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