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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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LLDP_1.0.8802.1.1.2.0.0.1 lldpRemTablesChange

LLDP_1.0.8802.1.1.2.0.0.1 lldpRemTablesChange

Description

LLDP/4/NBRCHGTRAP: OID [oid] Neighbor information is changed. (LldpStatsRemTablesInserts=[INTEGER], LldpStatsRemTablesDeletes=[INTEGER], LldpStatsRemTablesDrops=[INTEGER], LldpStatsRemTablesAgeouts=[INTEGER])

This alarm is generated when a neighbor is added, deleted, discarded, or aged.

Attribute

Alarm ID Alarm Severity Alarm Type
1.0.8802.1.1.2.0.0.1 Warning equipmentAlarm(6)

Parameters

Name Meaning

[oid]

Indicates the MIB object ID of the alarm.

lldpStatsRemTablesInserts Indicates the number of new neighbors.
lldpStatsRemTablesDeletes Indicates the number of neighbors that are deleted.
lldpStatsRemTablesDrops Indicates the number of neighbors that are discarded because of insufficient space.
lldpStatsRemTablesAgeouts Indicates the number of neighbors that are aged.

Impact on the System

This alarm is a notification of changes in the network topology for the NMS, and no action is required.

Possible Causes

Cause 1

A neighbor is found.

Cause 2

A neighbor is deleted.

Cause 3

A neighbor is aged.

Cause 4

A neighbor is discarded because of insufficient space.

Procedure

  1. Check the values of LldpStatsRemTablesInserts, LldpStatsRemTablesDeletes, dpStatsRemTablesDrops, and LldpStatsRemTablesAgeouts in the alarm message.

    • If the value of LldpStatsRemTablesInserts is not 0, go to Step 2.
    • If the value of LldpStatsRemTablesDeletes is not 0, go to Step 3.
    • If the value of dpStatsRemTablesDrops is not 0, go to Step 4.
    • If the value of LldpStatsRemTablesAgeouts is not 0, go to Step 5.

  2. A new neighbor is discovered, indicating that a new device is connected to the device or LLDP is enabled on a neighbor. This message is a normal notification and you do not need to handle it. Go to Step 6.
  3. A neighbor is deleted, indicating that LLDP is disabled on the neighbor or the neighbor is disconnected from the device. Check whether the administrator has disabled LLDP on the neighbor or disconnected the neighbor from the device.

    1. If so, this message is a normal notification and you do not need to handle it. Go to step 6.
    2. If not, rectify the link fault and go to Step 6.

  4. The number of neighbors reaches the maximum (4096 on the entire device and 256 on each port). It is recommended that you disable LLDP on some minor interfaces to save information about the new neighbors. Go to Step 6.
  5. Some neighbors are deleted after their aging time expires, indicating that the links between the neighbors and the device are faulty. Rectify the link fault and go to Step 6.
  6. End.

Related Information

None.

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Updated: 2019-03-06

Document ID: EDOC1100041475

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