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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_1.3.6.1.3.37.2.0.11 isisVersionSkew

ISIS_1.3.6.1.3.37.2.0.11 isisVersionSkew

Description

IS-IS received a PDU with incorrect ProtocolVersion. (isisSysInstance=[isisSysInstance], isisSysLevelIndex=[isisSysLevelIndex], isisCircIndex=[isisCircIndex], isisCircIfIndex=[isisCircIfIndex], isisPduProtocolVersion=[isisPduProtocolVersion], isisPduFragment=[isisPduFragment], ifIndex=[ifIndex], IfName=[IfName])

IS-IS received a PDU with an incorrect protocol version number.

Attributes

Attribute

Description

Alarm or Event

Event

Trap Severity

Critical

Mnemonic Code

isisVersionSkew

Trap OID

1.3.6.1.3.37.2.0.11

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.

isisPduProtocolVersion

Indicates a version number.

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

1.3.6.1.3.37.1.10.1.1.5

isisPduProtocolVersion

isisSysInstance

1.3.6.1.3.37.1.10.1.1.2

isisPduFragment

isisSysInstance

Impact on the System

1. If the board modifies the packet, route flapping may occur, and the CPU usage will increase.

2. If the trap is generated because of intercommunication between s, neighbors cannot be established, and routes cannot be learnt from each other.

Possible Causes

1. The IS-IS version numbers supported by the local and other s were inconsistent.

2. The version number field was modified during packet transmission.

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 . Check whether the value of version field on the source is as 1.

    • If so, go to Step 2.

    • If not, go to Step 4.

    Table 34-4  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. View the logs or ping the board to check whether the board has a fault.

    • If so, go to Step 3.

    • If not, go to Step 6.

  3. Change the board. Then, check whether the trap is cleared.

    • If so, go to Step 7.

    • If not, go to Step 6.

  4. Check whether the IS-IS version number of the source can be modified.

    • If so, go to Step 5.

    • If not, go to Step 6.

  5. Modify the IS-IS version number of the source . The Huawei does not support the modification of the IS-IS version number through a command. Then, check whether the trap is cleared.

    • If so, go to Step 7.

    • If not, go to Step 6.

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

Document ID: EDOC1100039527

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