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Alarm Handling

S9300, S9300E, and S9300X V200R010C00

This document provides the explanations, causes, and recommended actions of alarms on the product.
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IFNET_1. linkDown

IFNET_1. linkDown


IFNET/1/IF_LINKDOWN: OID [oid] Interface [interface-index] turned into DOWN state.(AdminStatus=[INTEGER],OperStatus=[INTEGER],InterfaceName=[OCTET])

The status of the link protocol on the interface became Down.


Alarm ID Alarm Severity Alarm Type Critical other(1)


Name Meaning


Indicates the MIB object ID of the alarm.


Indicates the interface index.


Indicates the admin status, which means whether the interface has been disabled.
  • 1: undo shutdown
  • 2: shutdown


Indicates the operating status, which means the link layer protocol status of the interface.
  • 1: Up
  • 2: Down


Indicates the interface name.

Impact on the System

The interface cannot forward packets normally.

Possible Causes

Cause 1:

The interface became Down and the link was disconnected.

Cause 2:

The VLANIF interface is deleted.


  1. If the VLANIF interface is deleted, this trap message is informational only. No action is required, go to Step 7.
  2. Run the display this command in the interface view to check whether interfaces on both ends are shut down.

    • If so, go to Step 3.

    • If not, go to Step 4.

  3. Run the undo shutdown command in the interface view to check whether the alarm is cleared.

    • If so, go to Step 7.

    • If not, go to Step 4.

  4. Check whether the cable and optical module are loosened or dropped.

    • If so, go to Step 6.

    • If not, go to Step 5.

  5. Connect the physical link correctly and then check whether the alarm is cleared.

    • If so, go to Step 7.

    • If not, go to Step 6.

  6. Collect alarm information and configuration information, and then contact technical support personnel.
  7. End.
Updated: 2019-08-21

Document ID: EDOC1000142054

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