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%SFF8472-3-THRESHOLD_VIOLATION: Rx power high warning

泡爺
Level 1
Level 1

Hello, everyone.


I found the following alert using Cisco SFP-10G-SR.

 

%SFF8472-3-THRESHOLD_VIOLATION: Te1/1/x: Rx power high warning; Operating value: 0.1 dBm, Threshold value: -1.0 dBm.
%SFF8472-3-THRESHOLD_VIOLATION: Te1/1/x: Rx power high warning; Operating value: -0.1 dBm, Threshold value: -1.0 dBm.

I think the problem is caused by the manufacturer's specification for the output of 2.4 dBm to -7.6 dBm on the opposite side.

 

There is no trouble in the communication itself, but what is the possible trouble in this situation?

Is it that the life of the SFP is shortened?

 

I think the correct solution is to use an appropriate attenuator.
However, since it will take some time to procure the components, I would like to understand the anticipated problem.

Please lend me your expert wisdom.
Please.

 

Thanks, everyone.

awa.zee

 

-----Japanese-----

こんにちは、皆さん
Cisco SFP-10G-SRを使用して次のようなアラートを見つけました。

 

%SFF8472-3-THRESHOLD_VIOLATION: Te1/1/x: Rx power high warning; Operating value: 0.1 dBm, Threshold value: -1.0 dBm.
%SFF8472-3-THRESHOLD_VIOLATION: Te1/1/x: Rx power high warning; Operating value: -0.1 dBm, Threshold value: -1.0 dBm.

 

対向側のメーカー仕様で、出力が2.4dBm~-7.6dBmであるために発生している問題と思います。

 

通信自体にはトラブルの発生はないのですが、こういった状況で考えられるトラブルは何でしょうか

SFPの寿命が短くなることですか。

 

適切なアッテネータを使うことが、正しい解決方法と思います。
しかし部材の調達までに時間がかかるために、予測される問題を把握しておきたいと思っています。

 

エキスパートの皆さんのお知恵を貸してください。
お願いします。

 

ありがとう、皆さん。

泡爺

1 Reply 1

ss1
Level 1
Level 1

You can ignore this message especially when it comes to 10Gbase-SR. Nothing will happen to the module. Just keep a piece or two as a spare. 

This could be severe in case of 10Gbase-ER and 10Gbase-ZR because their receivers can die due to overload, however in case of 10Gbase-SR it won't cause any harm other than filling up your logs with useless stuff and wasting your time reading it. 

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