Catalyst 3550s and Media Converters

Discussion in 'Cisco' started by Matthew Melbourne, Feb 6, 2004.

  1. Has anyone any experience of using Catalyst 3550 switches with Pandatel
    media converters?

    We are observing that after days or weeks of operation, the switch port
    will not receive any traffic (but will send traffic) - this is proved by
    one-way CDP and by the ingress port counters failing to increment.

    A reload of the switch temporarily fixes the problem. The switch has been
    changed from a 3550-PWR to a 3550 (24-port 10/100, 2GE), and the same
    behaviour is observed. The media converters are currently under
    investigation. The switches were both running 12.1(13)EA1c.


    Matthew Melbourne, Feb 6, 2004
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  2. I've seen similar behaviour with C3550's connected via FE to Bay/Nortel
    switches both with & without (in this case RS), media converters.

    Buzz Lightbeer, Feb 6, 2004
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  3. Matthew Melbourne

    Terry Knight Guest

    I've also seen this before and got around it by setting the switch ports
    (FE) to auto speed and duplex. You've got to bear in mind that the media
    converters behave like switch ports themselves and so it's possible to have
    speed/duplex mismatches. But in most cases it's not possible to set the
    speed/duplex of the converter.

    Hope this helps

    Terry Knight, Feb 9, 2004
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