- Gold, 750 points or more
I have tried very hard to understand STP but i strunk at one point.Please see the diagram below,this is reference to the STP diagram in cisco BCMSN.I think i am missing a little thing.
suppose switch A and B are connected to each other with ports 1 and 2 on both the sides and both the ports are configured as trunk links.
On Switch A i have a node suppose node 1 connected on port 3 and on switch B i have a node suppose node 2 conected on port 3.
If node 1 want to communicate with node 2 the request will be forwarded to switch B from ports 1 and 2 and switch B will learn that it can reach node 1 from ports 1 and 2 node 1's mac-address will be learned on port 3 now when node 2 replies back the packet is going to come from ports 1 and 2 from switch B to ports 1 and 2 on switch A here i dnot understand how the loop is forming.Please exlpian.