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Log Reference

AR120, AR150, AR160, AR200, AR1200, AR2200, AR3200, and AR3600 V200R007

This document supports all the logs of device, including the parameters, meaning, possible causes and solution.
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ISIS/4/PEER_DOWN_DIS_CHANGE

ISIS/4/PEER_DOWN_DIS_CHANGE

Message

ISIS/4/PEER_DOWN_DIS_CHANGE:IS-IS [process-id] neighbor [neighbor] was Down on interface [interface-name] because the DIS changed. The Hello packet was received at [hello-time] last time; the maximum interval for sending Hello packets was [max-interval]; the local router sent [send-number] Hello packets and received [receive-number] packets; the type of the Hello packet was [packet-type].

Description

The IS-IS neighbor went Down on the interface because the Designated Intermediate System (DIS) changed.

Parameters

Parameter Name Parameter Meaning
[process-id] Indicates the ID of an IS-IS process.
[neighbor] Indicates the system ID of a neighbor.
[interface-name] Indicates the name of an interface.
[hello-time] Indicates the time when a Hello packet was received last time.
[max-interval] Indicates the maximum interval for sending Hello packets.
[send-number] Indicates the number of Hello packets that were sent.
[receive-number] Indicates the number of Hello packets that were received.
[packet-type] Indicates the type of the Hello packet. The type can be
  • P2P: indicates the P2P Hello packet.

  • Lan Level-1: indicates the Hello packet in the Level-1 broadcast network.

  • Lan Level-2: indicates the Hello packet in the Level-2 broadcast network.

Possible Causes

The DIS of the broadcast network changed, and the IS-IS neighbor went Down.

Procedure

  1. If a small number of logs are generated, wait for a while to see whether the normal state is entered. If so, no action is required.
  2. If a large number of logs are generated, contact technical support personnel.
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Updated: 2019-05-29

Document ID: EDOC1000097209

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