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[A5500-EI} all fiber ports offline

 
MichaelM55
Trusted Contributor

[A5500-EI} all fiber ports offline

Hello,

I had a strange problem. On a stack of A5500-EI SFP swtiches all fiber ports were offline, i.e. all corresponding LEDs were off.

- As the "uplink ports" were TP ports, the switch was accessible via SSH.

- On the switch I did a "shutdown" and "undo shutdown" on several ports: No effect. No log entry that the inserted SFP modules were found

 

- rebooting the stack didn´t help

 

- Removing stacking cables and modules and reboot: nothing changed

- Deleting *.cfg on the switch and reboot: nothing changed

- I did an bootrom upgrade with them same btm710 version, which already was on the switches and and upgraded to the latest R2215 afterwards. result: It´s working again

Has anyone ever had that kind of problems?