Loopguard in IEEE standard

azi123 · ‎11-18-2018

Hi everyone!

As I understood, " loopguard" is a proprietary Cisco feature and it seems to me that it has an important role in running STP.

So ... I have two questions:

1- Does anyone know the equivalent of the loopgaurd feature in IEEE 802.1D standard? Does an IEEE standard support loopguard-like feature?

2- Does MSTP or RSTP or PVST or... need loopgaurd feature too?

Thanks,
Amir

paul driver · ‎11-18-2018

Hello

loop guard isn’t just restricted to 802.1d - pvst

its also applicable in

802.1w - rpvst+

802.1s MST

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Kind Regards
Paul

azi123 · ‎11-18-2018

Thank you, Paul, for your response!

I took a look at 802.1 d and 802.1 Q documents quickly and I didn't find anything related to loopguard ( or even unidirectional link detection), so I guess these standards don't cover loopguard or something like that, right?