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Alarm Handling

CloudEngine 12800 and 12800E V200R005C00

This document provides the explanations, causes, and recommended actions of alarms on the product.
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OSPF_1.3.6.1.2.1.14.16.2.17 ospfNssaTranslatorStatusChange

OSPF_1.3.6.1.2.1.14.16.2.17 ospfNssaTranslatorStatusChange

Description

The status of the NSSA translator changes. (ProcessId=[ProcessId], RouterId=[RouterId], AreaId=[AreaId], NSSATranslatorState=[NSSATranslatorState])

The NSSA translator changed from one device to another. The possible cause is that the device status changed among Enabled, Elected, and Disabled.

Attributes

Attribute

Description

Alarm or Event

Event

Trap Severity

Warning

Mnemonic Code

ospfNssaTranslatorStatusChange

Trap OID

1.3.6.1.2.1.14.16.2.17

Alarm ID

This is an event trap and does not involve alarm ID.

Alarm Type

This is an event trap and does not involve alarm type.

Raise or Clear

This is an event trap and does not involve alarm generation or clearance.

Match trap

This is an event trap and does not involve the matching trap.

Parameters

Parameter Description

ProcessId

Indicates the process ID.

RouterId

Indicates the router ID.

AreaId

Indicates the area ID.

NSSATranslatorState

Indicates the NSSA translator status.

  • 1: ENABLED
  • 2: ELECTED
  • 3: DISABLED

VB

VB OID

VB Name

VB Index

1.3.6.1.2.1.14.1.1

ospfRouterId

N/A

1.3.6.1.2.1.14.2.1.1

ospfAreaId

ospfAreaId;

1.3.6.1.2.1.14.2.1.12

ospfAreaNssaTranslatorState

ospfAreaId;

Impact on the System

ASE route flapping may occur because Type 5 LSA translated from Type 7 LSA is flushed due to ABR translator change or a new translator is translating Type 7 LSA to Type 5 LSA. Besides, the translator change caused not by manual operations is usually caused by topology change in the backbone or NSSA area.

Possible Causes

Cause 1: The translator-always of the nssa command was configured or deleted from an ABR in the NSSA area.

Cause 2: A new Router ID was configured on an ABR in the NSSA area and the router ID had taken effect.

Cause 3: A new entered or exited the NSSA.

Cause 4: The OSPF protocol was restarted or the active/ standby switchover was performed on a in the backbone area or the NSSA, causing topology flapping.

Cause 5: A parameter of a command was modified, causing topology change in the backbone or NSSA area. For example, if the parameter of no-summary and no-import-route of the nssa command is configured or deleted, the reestablishes a neighbor relationship with that in the backbone or NSSA area.

Cause 6: This switched between an ABR and a non-ABR.

Cause 7: Topology in the backbone or NSSA area changed. As a result, this could not route from the backbone or NSSA area to an ABR with a larger router ID or an ABR for which the translator-always option was configured.

Procedure

  1. If the nssa translator-always command in this is configured or deleted, run the display ospf brief command to check whether this should be a NSSA translator.

    • If the nssa translator-always command is configured, run the display ospf brief command to check whether the NSSA translator is in the Always state. If yes, go to step 8. If no, go to step 7.

    • If the nssa translator-always command is deleted, run the display ospf brief command to check the NSSA translator status. If the status is Disabled, go to step 2; If the status is Elected, go to step 8.

  2. The nssa translator-always command may be configured on an ABR in the NSSA area. Run the display ospf lsdb router command to check whether the Router-LSA of an ABR in the NSSA area has the Nt bit, or check whether the nssa translator-always is configured on another ABR.

    • If the Router-LSA of an ABR has the Nt.bit or the nssa translator-always command is configured on another ABR, go to step 8.

    • If the Router-LSA of an ABR does not have the Nt.bit or the nssa translator-always command is not configured on any ABR, go to step 3.

  3. If a new router ID is configured for this and has taken effect, check whether the NSSA translator state of the is correct after the topology in the area becomes stable.

    • If yes, go to step 8.

    • If no, go to step 4.

  4. Another ABR in the NSSA area may be configured with a new router ID. Check the configuration on other ABRs.

    • Check whether the Router ID of an ABR changed, and check whether a new router ID is greater than that of a local device after the topology in the area becomes stable.
      • If yes, go to step 8.

      • If no, go to step 5.

    • If all ABRs are correctly configured, go to step 5.

  5. If a new enters the NSSA area:

    • If the new is an ABR, check whether the router ID of the ABR is greater than that of the local device.
      • If yes, go to step 8.

      • If no, go to step 6.

    • If the new is not an ABR, go to step 6.

  6. Check whether the following trap message is generated for this or the neighbor :

    OSPF_1.3.6.1.2.1.14.16.2.2 ospfNbrStateChange

    OSPF_1.3.6.1.2.1.14.16.2.16 ospfIfStateChange

    • If the trap message exists, rectify the fault according to the related procedure.
    • If the trap message does not exist, go to step 7.

  7. Collect the trap, log, and configuration information. Then contact technical support personnel technical support engineers.
  8. End.
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Updated: 2019-04-20

Document ID: EDOC1100039527

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