ISIS-STD_1.3.6.1.2.1.138.0.4 isisAttemptToExceedMaxSequence

Description

ISIS-STD/3/MAXSEQ_EXCEED:OID [oid] The LSP sequence number almost reaches the maximum value. (NotificationSysLevelIndex=[integer], PduLspId=[opaque])

The IS-IS LSP sequence number almost reached the maximum value.

Attribute

Alarm ID	Alarm Severity	Alarm Type
1.3.6.1.2.1.138.0.4	Minor	other(1)

Parameters

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

Impact on the System

After the LSP sequence number of an LSP reaches 0xFFFFFFFF, the IS-IS process will stop running for a period of time (the period equal the sum of the maximum lifetime of an LSP and the aging time of an LSP), causing IS-IS services to be interrupted.

Possible Causes

The sequence number of a locally generated LSP reached 0xFFFFFFFF.

Procedure

If the trap is automatically cleared, no action is required. If the trap persists, after the sequence number of an LSP reaches 0xFFFFFFFF (it equals the maximum lifetime plus 60s, and the default maximum lifetime is 1200s), the sequence number of the LSP begins from 0 again. Run the display isis lsdb local command to view the sequence number of an LSP generated by the local wireless access controller,
- If the sequence number matches the configured update time, go to Step 5.
- If the sequence number increases quickly, go to Step 2.
Check whether the system IDs of other wireless access controller devices in the domain are the same as the system ID or virtual system ID of the local wireless access controller.
- If the system IDs of other wireless access controller devices in the domain are the same as the system ID or virtual system ID of the local wireless access controller, go to Step 3.
- If the system IDs of other wireless access controller devices in the domain are different from the system ID or virtual system ID of the local wireless access controller, go to Step 4.
Run the undo network-entity or undo virtual-system command in the IS-IS view of the local wireless access controller or other wireless access controller devices that have the same system ID or virtual system ID with the local wireless access controller to delete the system ID or virtual system ID. Run the network-entity or virtual-system command to configure a new system ID or virtual system ID for the wireless access controller. Check whether the trap is cleared.
- If the trap is cleared, go to Step 5.
- If the trap is not cleared, go to Step 4.
Collect alarm information and configuration information, and then contact technical support personnel.
End.

Related Information

None