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Alarm Handling

AR100-S, AR110-S, AR120-S, AR150-S, AR160-S, AR200-S, AR1200-S, AR2200-S, and AR3200-S V200R009

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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/4/LARGE_LSP:OID [oid] The length of the PDU to be sent is greater than the MTU. (sysInstance=[integer], sysInstanceofLevel=[integer], sysLevel=[integer], sysInstanceofCircIfIndex=[integer], circIndex=[integer], circIfIndex=[integer], lspSizeSupport=[integer], pduLspId=[opaque])

The length of the PDU to be sent is greater than the MTU of the interface.

Attribute

Alarm ID Alarm Severity Alarm Type

1.3.6.1.3.37.2.0.14

Warning

environmentalAlarm(6)

Parameters

Name Meaning

oid

Indicates the MIB object ID of the alarm.

sysInstance

IS-IS process ID

sysInstanceofLevel

IS-IS process ID

sysLevel

IS-IS level:
  • 1: Level-1

  • 2: Level-2

sysInstanceofCircIfIndex

IS-IS process ID

circIndex

Interface index

circIfIndex

IS-IS interface index

lspSizeSupport

Maximum LSP length

pduLspId

LSP ID

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.
  3. Run the lsp-length originate 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 alarm information and configuration information, and then contact technical support personnel.
  6. End.

Related Information

None.

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Updated: 2019-05-06

Document ID: EDOC1000174085

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