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Alarm Handling

CloudEngine 8800, 7800, 6800, and 5800 V200R005C10

This document provides the explanations, causes, and recommended actions of alarms on the product.
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ISIS_1.3.6.1.3.37.2.0.14 isisLSPTooLargeToPropagate

ISIS_1.3.6.1.3.37.2.0.14 isisLSPTooLargeToPropagate

Description

ISIS attempt to propagate an LSP which is larger than the dataLinkBlockSize for the circuit. (isisSysInstance=[isisSysInstance], isisSysLevelIndex=[isisSysLevelIndex], isisCircIndex=[isisCircIndex], isisCircIfIndex=[isisCircIfIndex], isisPduLspSize=[isisPduLspSize], isisPduLspId=[isisPduLspId], ifIndex=[ifIndex], IfName=[IfName])

IS-IS attempted to send an LSP of which the size is larger than the maximum transmission unit of an interface.

Attributes

Attribute

Description

Alarm or Event

Event

Trap Severity

Critical

Mnemonic Code

isisLSPTooLargeToPropagate

Trap OID

1.3.6.1.3.37.2.0.14

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 assigned by an IS-IS interface.

isisCircIfIndex

Indicates the IF index of an IS-IS interface.

isisPduLspSize

Indicates the length of an LSP.

isisPduLspId

LSP ID.

ifIndex

Indicates the IF index of an 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

1.3.6.1.3.37.1.10.1.1.6

isisPduLspSize

isisSysInstance

1.3.6.1.3.37.1.10.1.1.1

isisPduLspId

isisSysInstance

Impact on the System

None.

Possible Causes

The LSP to be forwarded exceeds the interface MTU.

Procedure

  1. Run the display ip interface interface-type interface-number command to view the interface MTU. The Maximum Transmit Unit in the command output shows the MTU value.
  2. Run the display current-configuration configuration isis command to view the maximum LSP length. lsp-length originate in the command output shows the maximum LSP length. If the command output does not show a setting, the default value is used. The default maximum LSP is 1497 bytes.
    • If the maximum LSP length is longer than the MTU, go to step 3.
    • If the maximum LSP length is shorter than the MTU, go to step 5.
  3. Run the lsp-length originate max-size command in the IS-IS view to change the maximum LSP length to a value smaller than the interface MTU.
  4. Check whether the alarm is cleared.

    • If the alarm is cleared, go to Step 6.

    • If the alarm persists, 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: 2019-04-02

Document ID: EDOC1100074754

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