3550 Port Priority

[uzumaki]

Im trying to use the port priority feature on a 3550 switch. When i try to modify the port that i want in forwarding state it doesn't show any logging changes on my hyperterm and when i try to "show span" nothing happens.

However when i try to use the spanning tree cost feature it did change the port state the way i wanted to.

Any Ideas?

 

[Jsteve]

using "port priority" affects the stp on the downstream switch (usualy change on root bridge), while the "port cost" will affect the local switch (usualy change on non-root bridge).

 

[uzumaki]

Yes that is correct, im trying to change the downstream switch, but i cannot. Anyone?

Thanks.

 

[vipergg]

If you want the particular port to forward go to the downstream switch of that connection and make the spanning tree the root for that vlan on that switch .
on the downstream switch just add "spanning-tree vlan XX root primary " .