OT: why many BIDs in PVST ?

From: Carlos G Mendioroz (tron@huapi.ba.ar)
Date: Thu Oct 27 2005 - 16:15:21 GMT-3

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For those that are wondering, yes I'm reading the BCMSN courseware :)

You know in STP there is a BID (Bridge ID) used to identify each
participating bridge and its priority.
Nowadays, also VLAN is used to make BIDs unique per VLAN, it used to be
the case that switches had many MACs just for that.

But, why do switches need different BIDs for different VLANs ?

-- 
Carlos G Mendioroz  <tron@huapi.ba.ar>  LW7 EQI  Argentina

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