I am having trouble with a fibre connection between a Cisco ME6524 and a Extreme Summit switch.
I am using LX Single mode SFP's at both ends, but the link won't come up.
If i set "speed nonegotiate" at the Cisco side, I get at link led at the Extreme side. The technician responsible for the Extreme switch tried to set auto off 1000 full on the port, but nothing happens at the Cisco switch..
The fibre has been inspected, and found OK with nearly no loss (about 10 metres of patch). Also tried with 5db attenuators, but no luck..
Anyone got a solution, or at least a tip?