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Thread: Bridging Loop

  1. #1
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    Bridging Loop

    Hi All,

    Have got a server with 3 nics in for ghost (16bit version ) imaging accross multiple vlans. We're getting what seems to be a bridging loop when either of the 2 additional nics are enabled. disable them and things back to normal.
    We've cut the bindings down to a minimum (TCP/IP and File & Print) and the two extra ones for imaging haven't got default gateways set.
    Have done a route print and can't see anything obviously wrong in there
    Has anyone got any other ideas as to where to look.....?

    Cheers.

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    Quote Originally Posted by chinny
    Hi All,

    Have got a server with 3 nics in for ghost (16bit version ) imaging accross multiple vlans. We're getting what seems to be a bridging loop when either of the 2 additional nics are enabled. disable them and things back to normal.
    We've cut the bindings down to a minimum (TCP/IP and File & Print) and the two extra ones for imaging haven't got default gateways set.
    Have done a route print and can't see anything obviously wrong in there
    Has anyone got any other ideas as to where to look.....?

    Cheers.
    The clue is in what the problem is called - Bridging/switching operates at layer 2 so route print etc will tell you nothing. What makes you think you are getting a bridging loop?
    "In a perfect world... spammers would get caught, go to jail, and share a cell with many men who have enlarged their penises, taken Viagra and are looking for a new relationship."

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    Quote Originally Posted by badass
    What makes you think you are getting a bridging loop?
    I guess the title should have been "Bridging loop?"
    Network was getting flooded out - packet loss - very high latency.
    If we disable the nics on vlans 3 and 4 then the problem stops immediately.
    We've worked around it now though - have changed that to use lmhosts instead of using multiple nics on the ghost image share server. I'd be interested to know what happened though......point taken on bridging being layer 2 and routing being layer 3 but why did the problems stop when we disabled those 2 nics (fyi neither has a default gateway)
    Last edited by chinny; 06-02-2006 at 02:26 PM.

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    Quote Originally Posted by chinny
    I guess the title should have been "Bridging loop?"
    Network was getting flooded out - packet loss - very high latency.
    If we disable the nics on vlans 3 and 4 then the problem stops immediately.
    We've worked around it now though - have changed that to use lmhosts instead of using multiple nics on the ghost image share server. I'd be interested to know what happened though......point taken on bridging being layer 2 and routing being layer 3 but why did the problems stop when we disabled those 2 nics (fyi neither has a default gateway)
    I guess you'll never know what caused it now but when you get symptoms like that I'd be thinking about using a packet sniffer to get more info
    "In a perfect world... spammers would get caught, go to jail, and share a cell with many men who have enlarged their penises, taken Viagra and are looking for a new relationship."

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