I have very basic question related to Spanning Tree Protocol how it provides Redundancy in path this is something I read somewhere about STP but what I believe is it disable Network Redundancy .
Whats is your view Guys?
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Spanning Tree Protocol takes a graphs with cycles and reduces it to a minimal spanning tree, which you are correct that takes out redundant lines. However, if these lines were enabled the network would break and not run. Without STP a layer 2 802.1 network will forward the traffic blindly and you get a loop of infinite forwarding which in turn crashes the network. With STP however you can have loops in your network but STP will disable them until the tree is rebuilt due to a change in the topology. What this means is if you have a network running spanning tree, and a few links go down you have other links that will come up thus you have redundancy and your network won't crash.
TRILL is a new protocol that provides with without the need to shutdown links. Thus it provides the multi-path redundancy you are talking about.
