https://community.extremenetworks.com/t5/extremeswitching-exos-switch/error-message-on-5520-stack/m-p/121000#M23132 <P>I get on my 5520 stack the following error every 5 minutes</P><P>&lt;Erro:HAL.Port.Error&gt; summitbcmReadGbicEeprom: Failed open fd=-1 errno=2(No such file or directory) open file name(/dev/s450/gbicp1)</P><P>&nbsp;</P><P>What is the background here?</P> Fri, 19 Dec 2025 07:53:21 GMT ChristianK 2025-12-19T07:53:21Z https://community.extremenetworks.com/t5/extremeswitching-exos-switch/error-message-on-5520-stack/m-p/121000#M23132 <P>I get on my 5520 stack the following error every 5 minutes</P><P>&lt;Erro:HAL.Port.Error&gt; summitbcmReadGbicEeprom: Failed open fd=-1 errno=2(No such file or directory) open file name(/dev/s450/gbicp1)</P><P>&nbsp;</P><P>What is the background here?</P> Fri, 19 Dec 2025 07:53:21 GMT https://community.extremenetworks.com/t5/extremeswitching-exos-switch/error-message-on-5520-stack/m-p/121000#M23132 ChristianK 2025-12-19T07:53:21Z https://community.extremenetworks.com/t5/extremeswitching-exos-switch/error-message-on-5520-stack/m-p/121051#M23138 <P>Hello Christian!&nbsp;</P><P>I believe these logs indicate a possible bad or unsupported optic. This article is for the 7520 but the log is the same:&nbsp;<A href="https://extreme-networks.my.site.com/ExtrArticleDetail?an=000126908" target="_blank">https://extreme-networks.my.site.com/ExtrArticleDetail?an=000126908</A></P><P>&nbsp;</P> Tue, 06 Jan 2026 20:05:04 GMT https://community.extremenetworks.com/t5/extremeswitching-exos-switch/error-message-on-5520-stack/m-p/121051#M23138 Tyler_Edwards 2026-01-06T20:05:04Z