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Enable BPDU Gaurd on 2950 will errdiable the port in 2950.

We have IP phones connected to 2950 switches. If I enable BPDU Gaurd and if the phone reboots it shut down the switch port in to errdisable.

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Re: Enable BPDU Gaurd on 2950 will errdiable the port in 2950.

The spanning tree is going to involve bpdu's to avoild loop . so to have bpdu guard on if the interface detected a bpdu then it would become errdisabled. The best way to use that feature was with the spanning-tree portfast feature because spanning tree

portfast would be for end devices. Having bpdu gaurd would then ensure that should someone unplug an end device and plug in another switch onto the portfast interface having bpdu guard would errdisable that interface so the network doesn't go down from a loop.

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