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Community Member

loop guard

Hello

I have a question about a loop guard mechanism. How many time the loop-guard waits before changing the port state into loop-inconsistent with 802.1d. Those it waits 3 x hello time or max-age time ?

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Community Member

Re: loop guard

It depends on what STP version u run.If it is 802.1d it waits for 20 seoconds, else 6 seconds.In other words, loopguard prevents a port from moving to forwarding state, becuase it stopped receiving bpdus.

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Community Member

Re: loop guard

It depends on what STP version u run.If it is 802.1d it waits for 20 seoconds, else 6 seconds.In other words, loopguard prevents a port from moving to forwarding state, becuase it stopped receiving bpdus.

Community Member

Re: loop guard

Thanks for your help.

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