Hello. Could you please help to resolve the trouble with DAC cables on my summit stack.
Extreme x650 with 12.5 EXOS in stack mode works normal with DAC SFP+ Tyco Electronics (sfp stickered “Extreme networks 10307” number), but show “Media SF+_UNKNOWN is inserted into Port 7 “ in log buffer.
After I’ve tried to update EXOS to 15.3 all ports turned ON except this DAC cables (4 PCS). They were in a Ready state. I had to roll back the update. Could you recommend the proper DAC cable or what is the trouble?