I have a WS-C3560-48TS running 12.2(55)SE8 that I'm trying to connect to a WS-C3560CG-8PC-S running 15.0(2)SE4.When I connect the CAB-SFP-50CM, the switches do not connect.  The interfaces on both sides are set to trunks using dot1q.  Tried using mul...