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Alarm Handling

AR100, AR120, AR150, AR160, AR200, AR1200, AR2200, AR3200, and AR3600 V200R010

This document provides the trap description, attributes, parameters, impact on the system, possible causes, procedures, and references. This document provides a complete set of traps, through which intended readers are kept of the running status of the device so as to locate faults.
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MSTP_1.3.6.1.4.1.2011.5.25.42.4.2.4 hwMstpiPortRootGuarded

MSTP_1.3.6.1.4.1.2011.5.25.42.4.2.4 hwMstpiPortRootGuarded

Description

MSTP/2/RGSUP:OID [oid] The ROOT-Protection port received superior message. (InstanceID=[INTEGER], PortInstanceID=[INTEGER], PortID=[INTEGER], IfIndex=[INTEGER], PortName=[STRING])

A switch with a higher priority outside the protection range of the root bridge attempted to become the root bridge.

Attribute

Alarm ID Alarm Severity Alarm Type
1.3.6.1.4.1.2011.5.25.42.4.2.4 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 actual network topology may not be the same as the expected one.

Possible Causes

Cause 1:

The port enabled with the root protection function received BPDUs of a higher priority than that of the bridge.

2:

The priority of some switch changed in the network.

Procedure

  1. View physical devices on the network to check whether new physical connections enabled with STP are added.

    • If so, go to Step 2.

    • If not, go to Step 4.

  2. Check whether the added physical link is necessary.

    • If so, go to Step 3.

    • If not, go to Step 7.

  3. Run the display stp command to check whether the interfaces are consistent with the STP calculation results.

    • If so, go to Step 11.

    • If not, go to Step 4.

  4. Run the display stp command to check whether the priority of a bridge is change in the network topology.

    • If so, go to Step 5.

    • If not, go to Step 8.

  5. Check whether the operation of changing the priority is correct.

    • If so, go to Step 8.

    • If not, go to Step 6.

  6. Run the stp priority command to re-set the priority of the local bridge as required. Alternatively, run the undo stp priority command or the undo stp root command to restore the default value of the priority of the local bridge. Then, check whether the alarm is cleared.

    • If the alarm is cleared, go to Step 11.

    • If the alarm is not cleared, go to Step 8.

  7. Correctly deploy the network topology, and then check whether the alarm is cleared.

    • If the alarm is cleared, go to Step 11.

    • If the alarm is not cleared, go to Step 8.

  8. Run the display stp command to check whether an interface under the protection of the root bridge.

    • If so, go to Step 9.

    • If not, go to Step 10.

  9. Run the undo stp root-protection command in the interface view to delete the configuration of the protection under the root bridge. Then, check whether the alarm is cleared.

    • If the alarm is cleared, go to Step 11.

    • If the alarm is not cleared, go to Step 10.

  10. Collect alarm information and configuration information, and then contact technical support personnel.
  11. End.

Related Information

None.

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Updated: 2019-08-12

Document ID: EDOC1100034065

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