I had a similar problem between a 2948-G and a 6506 about two months ago (CatOS on both devices). The problem was that the trunk between the two devices was dropping. I tested the fiber (tested ok), moved the links to a different port on both ends, swapped out the GBICS, swapped out the fiber patch cords, even downgraded the software on the 2948, nothing solved my problem. I eventually swapped it out with a spare 2948-G and the link has been working fine since.
Aaron ----- Aaron Childs Assistant Director - Networking Westfield State College http://www.wsc.ma.edu/it/ -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Felix Nkansah Sent: Monday, October 01, 2007 1:35 PM To: [email protected] Subject: [c-nsp] Catalyst/Fiber Connectivity Issues Hi, A client of mine has a fiber backbone between two buildings on their campus. The fiber terminates on a Catalyst 6509 (at the data centre) and a Catalyst 3750 at the other end. Users at the far-end connect to servers located at the data center over this fiber. This connection has been working fine for the past 2 years, until a recent problem came up. For two weeks now, the usual occurrence is for the fiber link to stop passing traffic while working until the 3750 is rebooted or the fiber connectors removed from the SFP port and replugged. Meanwhile, the interface and line protocol remain UP on both switches during this abnormal behaviour. There are also no log messages occurring. Everything look fine on both switches. They just wouldnt pass traffic. The problem occurs about twice each day. It's difficult diagnosing the problem now. I need help pls. Regards, Felix _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
