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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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ISIS_1.3.6.1.3.37.2.0.12 isisAreaMismatch

ISIS_1.3.6.1.3.37.2.0.12 isisAreaMismatch

Description

IS-IS received a level-1 Hello PDU whose area address is different from the local area address. (isisSysInstance=[isisSysInstance], isisSysLevelIndex=[isisSysLevelIndex], isisCircIndex=[isisCircIndex], isisCircIfIndex=[isisCircIfIndex], isisPduFragment=[isisPduFragment], ifIndex=[ifIndex], IfName=[IfName])

IS-IS received a Level-1 Hello PDU that carried an area address different from the local one.

Attributes

Attribute

Description

Alarm or Event

Event

Trap Severity

Error

Mnemonic Code

isisAreaMismatch

Trap OID

1.3.6.1.3.37.2.0.12

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

isisSysInstance

Indicates the ID of the IS-IS process.

isisSysLevelIndex

Indicates the IS-IS level:
  • 1: Level-1

  • 2: Level-2

isisCircIndex

Indicates the index of the interface.

isisCircIfIndex

Indicates the index of the interface.

isisPduFragment

Indicates the fragment of 64-byte PDU header.

ifIndex

Indicates the IF index of the interface.

IfName

Indicates the name of the interface.

VB

VB OID

VB Name

VB Index

1.3.6.1.3.37.1.1.1.1.1

isisSysInstance

isisSysInstance

1.3.6.1.3.37.1.2.1.1.1

isisSysLevelIndex

isisSysInstance

isisSysLevelIndex

1.3.6.1.3.37.1.3.1.1.2

isisCircIfIndex

isisSysInstance

isisCircIndex

1.3.6.1.3.37.1.10.1.1.2

isisPduFragment

isisSysInstance

Impact on the System

1. If the trap is triggered by a hardware fault of the board, route flapping may occur and the CPU usage will increase.

2. If the trap is triggered by an incorrect configuration, neighbors cannot be established, and routes cannot be learnt from each other.

Possible Causes

1. The configuration was incorrect.

2. The area address field was modified.

Procedure

  1. Based on the IS-IS packet format defined in ISO10589, search for the pdu-fragment field (in hexadecimal) in the trap and fetch the system ID of the source . Then, run the display this command in the IS-IS view to check whether the area address configured on the source is the same as that of the local .

    • If so, go to Step 3.

    • If not, go to Step 2.

    Table 34-5  Methods of searching for system IDs and types of IS-IS packets

    Searching for the Packet Type

    Searching for the System ID

    Hello: the 5th byte in the pdu-fragment field being 0f, 10, or 11

    The system ID is continuous 6 bytes after the 10th byte in the pdu-fragment field

    LSP: the 5th byte in the pdu-fragment field being 12 or 14

    The system ID is continuous 6 bytes after the 13th byte in the pdu-fragment field

    SNP: the 5th byte in the pdu-fragment field being 18, 19, 1A, or 1B

    The system ID is continuous 6 bytes after the 11th byte in the pdu-fragment field

  2. (Run the undo network-entity command with caution.) Run the network-entity command in the IS-IS view of the source to configure a new IS-IS area address so that the area address of the is consistent with that of the local . Then, check whether the trap is cleared.

    • If so, go to Step 4.

    • If not, go to Step 3.

  3. Collect the trap information, log information, and configuration of the , and contact technical support personnel technical personnel.
  4. End.
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Updated: 2019-04-20

Document ID: EDOC1100039527

Views: 88391

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