spanning tree

carl_townshend · ‎02-14-2007

with spanning tree am I right in saying if I had say 3 switches linked together twice, would 2 ports be blocked here ?

royalblues · ‎02-14-2007

Yes correct.

Spanning tree will always put ports into blocking state whenever you have redundant links to avoid layer 2 loops

Narayan

bjw · ‎02-14-2007

If all three switches are connected to eachother, then yes properly configured Spanning tree should block 2 ports.

Sw1------A-----Sw2

| Span tree |

B 3 sw C

| test |

------SW 3---XX

In this config if SW1 is the root bridge, Spanning tree would block 2 ports on Link C.