I'm using a 2960-24TT-L running c2960-lanbasek9-mz.122-46.SE.bin, and a Nortel 5510 running 6.1.007. No spanning tree on either end. I have two GB ports on each switch setup with an LACP trunk, with media converters inbetween. Nortel is the core, and the cisco is the distribution. There is a...