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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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CSSM_1. hwCssPortErrorDown

CSSM_1. hwCssPortErrorDown


CSSM/3/CSSERRORDOWN: OID [OID] CSS port [STRING] has turned into error-down state.

A CSS port is shut down by the CSS port error-down function.


Alarm ID Alarm Severity Alarm Type Minor equipmentAlarm(5)


Name Meaning
OID Indicates the ID of the alarm MIB object.
STRING Indicates the CSS port where the alarm is generated. The value is in the chassis ID/slot ID/subcard ID/port ID format.

Impact on the System

After the CSS port is shut down, traffic on the CSS port is switched to another port.

Possible Causes

The number of CRC-error packets received per minute or the number of Up/Down transitions on the CSS port in the specified period reaches the configured threshold.


  1. Check whether the voltage is unstable.

    • If so, go to step 4 after the voltage is stable.
    • If not, go to step 2.

  2. Check whether the CSS card is removed and then installed multiple times.

    • If so, do not remove and then install the CSS card and go to step 4.
    • If not, go to step 3.

  3. Replace the optical module and fiber to check whether they are faulty.

    • If so, replace the faulty optical module or fiber and then go to step 4.
    • If not, collect alarm information and configuration information, and then contact technical support personnel.

  4. Restore the CSS port that is automatically shut down. Alternatively, run the css port link-flap trigger error-down auto-recovery-interval time command to set the interval before CSS ports in error-down state can automatically turn Up.
Updated: 2019-08-21

Document ID: EDOC1000142054

Views: 191061

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