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Alarm Handling

CloudEngine 8800, 7800, 6800, and 5800 V200R005C10

This document provides the explanations, causes, and recommended actions of alarms on the product.
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MSTP_1.3.6.1.4.1.2011.5.25.42.4.2.30 hwMstpProRootShake

MSTP_1.3.6.1.4.1.2011.5.25.42.4.2.30 hwMstpProRootShake

Description

The root bridge role flapped. (ProcessID=[ProcessID], InstanceID=[InstanceID])

The root bridge role flapped for a non-root bridge device.

Attributes

Attribute

Description

Alarm or Event

Alarm

Trap Severity

Critical

Mnemonic Code

hwMstpProRootShake

Trap OID

1.3.6.1.4.1.2011.5.25.42.4.2.30

Alarm ID

0x0d542001

Alarm Type

communicationsAlarm

Raise or Clear

Raise

Match trap

MSTP_1.3.6.1.4.1.2011.5.25.42.4.2.31 hwMstpProRootShakeResume

Parameters

Name

Description

ProcessID

MSTP process ID

InstanceID

Multiple spanning tree instance (MSTI) ID

VB Parameters

VB OID

VB Name

VB Index

1.3.6.1.4.1.2011.5.25.42.4.1.23.1.1

hwMstpProID

hwMstpProID

1.3.6.1.4.1.2011.5.25.42.4.1.19.1.1

hwMstpInstanceID

hwMstpInstanceID

Impact on the System

Services may flap or be interrupted.

Possible Causes

When BPDUs were transparently transmitted on an MSTP network, some ports received multiple copies of BPDUs. The root bridge information in the multiple copies of BPDUs is inconsistent, causing the root bridge to flap. The root bridge flapped for more than 10 times within 5 minutes, and the alarm indicating the flap was reported at the tenth time.

Procedure

  1. View MSTP logs and check whether alarms indicating frequent intermittent Down events are reported on the ports or port priorities are frequently changed.

    • If such alarms exist or frequent priority modification occurs, go to Step 2.
    • If no such alarms exist or no frequent priority modification occurs, go to Step 3.

  2. Correct the network topology and check whether the alarm is cleared.

    • If the alarm is cleared, no action is required.
    • If the alarm persists, go to Step 3.

  3. View MSTP logs to check the source of BPDUs on the ports and identify the flapping source.
  4. Collect alarm information and configuration information, and then contact technical support personnel.
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Updated: 2019-04-02

Document ID: EDOC1100074754

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