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Log Reference

S9300, S9300E, and S9300X V200R010C00

This document provides the explanations, causes, and recommended actions of logs on the product.
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CSSM/4/DOWN_DELAY: The CSS link changed from Up to Down and then to Up within the configured delay of 500 ms.(CSS port=[STRING],delay time=[ULONG] ms)


The CSS link changes from Up to Down and then to Up within 500 ms.


Parameter Name Parameter Meaning
[STRING] Indicates the name of the physical member port that triggers the delay in reporting the CSS link-Down event.
[ULONG] Indicates the delay in reporting the CSS link-Down event. During the delay. traffic passing through the CSS link will be discarded.

Possible Causes

The CSS link changes to Down and then to Up within 500 ms.


  1. If only one similar log is generated, the CSS link was once interrupted intermittently. No action is required.
  2. If many similar logs are generated, you are advised to check whether the CSS link (including CSS cables and optical modules) is working normally.
Updated: 2019-08-21

Document ID: EDOC1000142069

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