ISIS-STD_1.3.6.1.2.1.138.0.14 isisLSPTooLargeToPropagate

Description

ISIS-STD/4/LARGE_LSP:OID [oid] The length of the PDU to be sent is greater than the MTU. (NotificationSysLevelIndex=[integer], CircIfIndex=[integer], PduLspSize=[integer], PduLspId=[opaque])

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

Attribute

Alarm ID	Alarm Severity	Alarm Type
1.3.6.1.2.1.138.0.14	Warning	environmentalAlarm(6)

Parameters

Name	Meaning
oid	Indicates the MIB object ID of the alarm.
NotificationSysLevelIndex	IS-IS level of a device that sends the trap
CircIfIndex	Interface index
PduLspSize	LSP length
PduLspId	LSP ID

Impact on the System

None

Possible Causes

The length of the forwarded LSP was greater than the interface MTU.

Procedure

Run the display ip interface interface-type interface-number command to check the interface MTU, namely the Maximum Transmit Unit field value.
Run the display current-configuration configuration isis command to check the LSP length set in the IS-IS process. The lsp-length originate field value indicates that maximum LSP length. If the LSP length is not found in the command output, the default LSP length is used. By default, the maximum length of an LSP generated in an IS-IS process is 1497 bytes.
Enter the IS-IS view, and run the lsp-length originate command to change the LSP length to be smaller than the interface MTU.
Then check whether the trap is cleared.
- If the trap is cleared, go to Step 6.
- If the trap is not cleared, go to Step 5.
Collect alarm information and configuration information, and then contact technical support personnel.
End.

Related Information

None