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Alarm Handling

AR100, AR120, AR160, AR1200, AR2200, AR3200, and AR3600 V300R003

This document provides the trap description, attributes, parameters, impact on the system, possible causes, procedures, and references. This document provides a complete set of traps, through which intended readers are kept of the running status of the device so as to locate faults.
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ISIS-STD_1.3.6.1.2.1.138.0.2 isisManualAddressDrops

ISIS-STD_1.3.6.1.2.1.138.0.2 isisManualAddressDrops

Description

ISIS-STD/2/MANAREA_DROP:OID [oid] Some area addresses were discarded because the number of area addresses exceeded three. (ManAreaAddr=[opaque])

On a Level-1-2 router, IS-IS leaked Level-1 area addresses to the Level-2 area, increasing the area addresses of the Level-2 area to more than 3. In this case, IS-IS used the top three smallest area addresses as the Level-2 area addresses, causing address loss in the local Level-2 area.

Attribute

Alarm ID Alarm Severity Alarm Type

1.3.6.1.2.1.138.0.2

Major

other(1)

Parameters

Name Meaning

oid

Indicates the MIB object ID of the alarm.

ManAreaAddr

Area address

Impact on the System

Area addresses are lost in the local IS-IS Level-2 area.

Possible Causes

On a Level-1-2 router, IS-IS leaked Level-1 area addresses to the Level-2 area, increasing the area addresses of the Level-2 area to more than 3. In this case, IS-IS used the top three smallest area addresses as the Level-2 area addresses.

Procedure

  1. Run the display isis lsdb level-1 verbose command to view details about the Level-1 LSDB. Based on the information about the AREA ADDR field in the LSP with the fragment number being 0, you can determine whether the number of Level-1 area addresses is greater than 3.

    • If the number of Level-1 area addresses is greater than 3, go to Step 2.
    • If the number of Level-1 area addresses is not greater than 3, go to Step 3.

  2. Run the display isis lsdb { level-1 | level-2 } verbose command to check whether the Level-1 area addresses are the same as the Level-2 area addresses in the LSPs with the fragment number being 0 on the local router.
  3. Collect alarm information and configuration information, and then contact technical support personnel.
  4. End.

Related Information

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Updated: 2019-03-06

Document ID: EDOC1100041475

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