Not sure if this is the right forum for this but I'm having a communication issue between a TP-Link T1600G-28PS and a Dell Powerconnect 6248P.
They basically won't talk to each other over Fibre, no link, no activity.
What I've tried:
Connected the two switches via copper – OK Link and traffic.
TP-Link switch fibre to media converter then copper to Dell – OK Link and traffic.
Dell Switch fibre to media converter then copper to TP-Link – OK Link and traffic.
Swapped out TP-Link switch with a HP switch using same SFP module and cable in the HP switch – OK Link and traffic.
Put the HP switch between the TP-Link and Dell (all via fibre) – OK Link and traffic.
I'm kind of at a loss as to what to do, there must be a setting thats causing the two not to talk but I have no Idea what.
I've ended up settling with TP-Link fibre to media converter then copper to the dell, but I want to eliminate the converter as its just more stuff to break.
Any help would be much appreciated.