Greetings, I have an open TAC case about this but I figured I'd ask here as well.
I recently installed 10 3750-Es in 5 2-member stacks. Each stack has 2 uplinks to a 6509-VSS. I'm using X2 to SFP+ converters and 10G SFP+ modules on both ends of the links between the stacks and the VSS. In each stack I'm using interface Ten1/0/1 and Ten2/0/1. There is currently no "real" traffic on any of the links. The plan is to do a forklift upgrade of our existing production network and I've set the 3750/VSS up in a test environment. With the exception of two hosts talking iperf to each other, the network is quiet. The problem I'm seeing is this: after about 6 to 8 hours a 10G interface on the 3750 side will go down. Saying 'show int Ten2/0/1' will show the media type as "Not Present": Full-duplex, 10Gb/s, link type is auto, media type is Not Present as opposed to: Full-duplex, 10Gb/s, link type is auto, media type is SFP-10GBase-SR I am seeing this behavior on three individual switches and in each case it is ten2/0/1 that fails. I've replaced the X2 converter, the SFP+ module and moved the converter to Ten2/0/2 but the symptoms persist. I RMA'd one of the switches and just installed the replacement, hopefully this will solve the problem. I also checked software compatibilty and the switches are running (C3750E-UNIVERSALK9-M), Version 12.2(53)SE2 Has anyone seen this before? -mtw _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
