We have a similar setup but with X2 interfaces, so no X2 to SFP+ convertors and that works just fine. Have you checked the transceiver parameters ? Maybe they are not within limit causing a shutdown of the interface ? (temperature, input power, output power). The first batch of (non-cisco) X2 transceivers we got, all gave wrong information about thresholds e.d. After replacing them, everything was fine. sh int te1/0/1 transc detail should give you this info. We are running version 122-50.SE2.
Wim Holemans Network/Security Manager University of Antwerp -----Original Message----- From: cisco-nsp-boun...@puck.nether.net [mailto:cisco-nsp-boun...@puck.nether.net] On Behalf Of Matthew White (MAWHI) Sent: dinsdag 11 mei 2010 0:03 To: cisco-nsp@puck.nether.net Subject: [c-nsp] 3750-E + CVR-X2-SFP10G + SFP-10G-SR = disappearing media 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/ _______________________________________________ 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/