North American Network Operators Group|
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Re: iPhone and Network Disruptions ...
On Wed, Jul 25, 2007, Warren Kumari wrote: > You have a couple of switches with STP turned off -- someone plugs in > some random cable, forming a bridge loop....... and everything > continues running fine, until some time in the future when it all > goes to hell in a hand-basket. Now, I could understand the system > remaining stable until the first broadcast / unknown MAC caused > flooding to happen, but I have seen this system remain stable for > anywhere from a few days to in a few weeks before suddenly exploding. If you want to hear about something whacked along those lines - imagine two access points which had spanning tree disabled, connected to a pair of switches on a vlan which wasn't running stp (thanks to platform stp limitations, the switches running pvstp and said campus having >800 vlans), and said ap's would occasionally associate in infrastructure mode - which would cause a broadcast storm on that vlan and fill trunk pipes with spaf. Debugging that one was hilarious. Hum. Adrian