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Log Reference

CloudEngine 8800, 7800, 6800, and 5800 V200R005C00

This document provides the explanations, causes, and recommended actions of logs on the product.
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ISIS/2/ISIS_VERSION_SKEW

ISIS/2/ISIS_VERSION_SKEW

Message

ISIS/2/ISIS_VERSION_SKEW: IS-IS received a PDU with incorrect ProtocolVersion. (isisSysInstance=[isisSysInstance], isisSysLevelIndex=[isisSysLevelIndex], isisCircIndex=[isisCircIndex], isisCircIfIndex=[isisCircIfIndex], isisPduProtocolVersion=[isisPduProtocolVersion], isisPduFragment=[isisPduFragment], ifIndex=[ifIndex], IfName=[IfName])

Description

IS-IS received a Hello packet with the IS-IS version number not supported by the local .

Parameters

Parameter Name Parameter Meaning

[isisSysInstance]

ID of an IS-IS process

[isisSysLevelIndex]

IS-IS level

[isisCircIndex]

Circuit index of an interface

[isisCircIfIndex]

Circuit IfIndex of an interface

[isisPduProtocolVersion]

Version number

[isisPduFragment]

64-byte PDU header

[ifIndex]

IfIndex of an interface

[IfName]

Interface name

Possible Causes

Cause 1: The number of the IS-IS version supported by the local was different from that supported by another .

Cause 2: The value of the version number field was changed during the packet transmission.

Procedure

  1. Based on the IS-IS packet format defined in ISO10589, check the isisPduFragment field (in hexadecimal) of the binary packet and obtain the system ID of the source . Check whether the value of the isisPduProtocolVersion field is 1.

    • If so, go to Step 2.

    • If not, go to Step 4.

    Table 47-6  Methods of identifying system IDs and types of IS-IS packets

    Identifying the Packet Type

    Identifying the System ID

    Hello: A Hello packet is identified when the 5th byte in the isisPduFragment field is 0f, 10, or 11.

    The six consecutive bytes beginning with the 10th byte in the isisPduFragment field constitute a System ID.

    LSP: An LSP is identified when the 5th byte in the isisPduFragment field is 12 or 14.

    The six consecutive bytes beginning with the 13th byte in the isisPduFragment field constitute a System ID.

    SNP: An SNP is identified when the 5th byte in the isisPduFragment field is 18, 19, 20, or 21.

    The six consecutive bytes beginning with the 11th byte in the isisPduFragment field constitute a System ID.

  2. Check the logs and ping packets to determine whether a hardware fault causes the packets to be changed.

    • If so, go to Step 3.

    • If not, go to Step 6.

  3. Check whether the IS-IS version number on the source can be changed.

    • If so, go to Step 5.

    • If not, go to Step 6.

  4. Change the IS-IS version number of the source (The IS-IS version number cannot be changed on the Huawei ). Check whether the fault is rectified.

    • If so, go to Step 7.

    • If not, go to Step 6.

  5. Contact technical support personnel technical support personnel.
  6. End.
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Updated: 2019-04-20

Document ID: EDOC1100039602

Views: 114084

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