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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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OSPFV3_1.3.6.1.2.1.191.0.2 ospfv3NbrStateChange

OSPFV3_1.3.6.1.2.1.191.0.2 ospfv3NbrStateChange

Description

The status of the non-virtual neighbor has changed. (RouterId=[RouterId], NbrIfIndex=[NbrIfIndex], NbrIfInstId=[NbrIfInstId], NbrRtrId=[NbrRtrId], NbrState=[NbrState], IfName=[IfName], Reason=[NbrStateChangeReason], SubReason=[SubReason])

The OSPFv3 neighbor status changes. The possible causes are that the status of the interface on the neighbor router changes and the contents of Hello packets change.

Attributes

Attribute

Description

Alarm or Event

Alarm

Trap Severity

Critical

Mnemonic Code

nbrstatechange

Trap OID

1.3.6.1.2.1.191.0.2

Alarm ID

0x08930003

Alarm Type

communicationsAlarm

Raise or Clear

None

Match trap

The fault trap and service restoration trap are in the same format except that the value of NbrState is different. The trap is a service restoration trap only when the value of 8: Full. Otherwise, it is a fault trap.

Parameters

Parameter Description

RouterId

Indicates the router ID.

NbrIfIndex

Indicates the IP address of the neighbor.

NbrIfInstId

Indicates the interface index.

NbrRtrId

Indicates the router ID of the neighbor.

NbrState

Indicates the neighbor status.

  • 1: Down
  • 2: Attempt
  • 3: Init
  • 4: 2-Way
  • 5: ExStart
  • 6: Exchange
  • 7: Loading
  • 8: Full

IfName

Indicates the interface name.

Reason

Indicates the reason why the neighbor status changes:

  • 1 (adjacencyHoldTimerExpired): The timer of the adjacent router timer times out.
  • 2 (physicalInterfaceChange): The status of the router physical interface on the router changes.
  • 3 (ospfProtocolReason): An OSPF protocol error occurs.
  • 4 (bfdSessionStateChange): The BFD session is closed.
  • 5 (configureChange): The OSPF configuration changes.
  • 6 (peerRouterReason): An alarm is generated because of the neighboring router.
  • 100 (alarmCleared): The alarm is cleared because services are restored, OSPFv3 is disabled, or the neighbor is deleted.

SubReason

Indicates the detailed reason.

VB

VB OID

VB Name

VB Index

1.3.6.1.2.1.191.1.1.1

ospfv3RouterId

N/A

1.3.6.1.2.1.191.1.9.1.8

ospfv3NbrState

ospfv3NbrIfIndex;

ospfv3NbrIfInstId;

ospfv3NbrRtrId;

Impact on the System

Whenever the non-virtual neighbor status changes, the trap will be sent. If the neighbor changes from a lower state to a higher state, this trap message is informational only and no action is required. If the neighbor changes from a higher state to a lower state, services may be interrupted.

Possible Causes

Cause 1: The status of the interface on the neighbor router changes.

Cause 2: Interface configurations on the local and remote devices are changed. The configurations include the Hello or Dead timer, interface authentication, and network type.

Cause 3: The reset ospfv3 command is used to restart the OSPF or perform a active/standby switchover.

Cause 4: A packet transmission error occurs and ping fails.

Procedure

  1. Run the display ipv6 interface and display ospfv3 peer commands to check the interface status of the neighbor router.

    • If the physical interface is Down, check whether the link is functioning properly. If the link is functioning properly, go to Step 2.

    • If the physical interface is Up, go to Step 2.

  2. Ping the peer IP address to check whether packets are forwarded correctly.

    • If the ping fails, go to Step 5.

    • If the ping succeeds, go to Step 3.

  3. Run the display ipv6 interface command on the neighbor device to check whether the OSPFv3 neighbor interface is in the Up state.

    • If the interface is in the Down state, go to Step 5.

    • If the interface is in the Up state, go to Step 4.

  4. Run the display ospfv3 interface command to check whether configurations on both ends are correct.

    • If they are correct, go to Step 6.

    • If they are incorrect, go to Step 5.

  5. Collect the alarm information, log information, and configuration information, and then contact technical support personnel technical support personnel.
  6. End.
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Updated: 2019-04-20

Document ID: EDOC1100039527

Views: 75456

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