bpduguard to disable the port automatically

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Apr 18th, 2009
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I have enabled bpduguard to disable the port automatically whenever host flap issue occurs. And have found BPDU-Guard to be very effective. But it's not working in some times. Any ideas? Thanks in advance.

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Overall Rating: 4 (2 ratings)
andrew.prince@m... Sat, 04/18/2009 - 11:15
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bpduguard should be configured on a switch that has ports configured as "portfast" if none of the ports are configured for portfast, the switch will go thru the listening,learning,forwarding or blocking if the switch port recevies a BPDU.


arun@fuzzy15s.com Sat, 04/18/2009 - 12:13
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yes, i have configured spanning-tree portfast in all access ports.


(config)# spanning-tree portfast bpduguard default

(config-if)#spanning-tree portfast

the ports will be disbled whenever the hostflap issue occurs. but some times its not working.

andrew.prince@m... Sat, 04/18/2009 - 12:36
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BPDUGuard has absolutely nothing to do with ports flapping, you need to look into the err-disable settings.

andrew.prince@m... Sat, 04/18/2009 - 13:26
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vlan flapping is handled by spanning-tree

diretcly connected host flapping can only be managed by port flapping.

What exactly is your issue?

arun@fuzzy15s.com Sat, 04/18/2009 - 13:50
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i like to disable the switch port automatically whenever physical loop occurs.


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