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ISIS/4/PEER_DOWN_CIRC_DOWN
ISIS/4/PEER_DOWN_CIRC_DOWN
Message
ISIS/4/PEER_DOWN_CIRC_DOWN:ISIS [process-id] neighbor [neighbor] was Down because interface [interface-name] was down. 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 because the interface became Down.
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
1. The shutdown command was run on the interface.
2: Abnormality occurred on the interface.
Procedure
Judge whether the neighbor relationship needs to be established on the interface. If so, go to Step 2; if not, go to Step 3.
Run the display rm interface verbose command and save the command output; contact technical support personnel.