A Root Bridge election is one function: determine which bridge in a collection of
bridges on a LAN and for multiple inter-connected LANS will be the Root...
The Designated Bridge election has another, different function: determine which
bridge, as you noted, has the least cost path TO the Root Bridge. This notion of
having a designated bridge precludes the possibility of having simultaneously active
bridges that are acting in parallel to each other between two LANs.
Each election process is triggered anew with topology deltas, of course,
which is
why the STA is a dynamic algorithm.
Does this explanation respond to both of your questions? =8^)
R/
Rainman
"Deloso, Elmer G." wrote:
Hi, all.
First of all, I just want to test if I'm able to post on the forum at all since I don't see any responses
to my first posting.
If this goes through, can someone tell me why would Spanning Tree Algorithm need a designated
port when the root port has already been established as the least cost path to the Root Bridge?
Thanks.
