PVST question

magic11

So here is the scenrio

There are 3 switches, S1, S2, S3 and other workstations and AP's connected, but that is not important. There are 3 VLANS, VLAN 10, 20, and 30. S1 is the root for VLAN 10 and 20 and S2 is the root for VLAN 30

Now granted everything is working, on S3 and all the other interfaces other than fa0/2 and fa0/3 are shut down, I have VLAN 20 going out interface fa0/2 while VLAN 30 is going out fa0/3. Now, if I wanted VLAN 20 to go out in fa0/3 and VLAN 30 going out in fa0/2, how would I do that?

I was thinking about doing on S3,

config t
int fa0/2
spanning-tree vlan 20 port-priority 200
spanning-tree vlan 30 port-prioirty 32

int fa0/3
spanning-tree vlan 30 port-priority 200
spanning-tree vlan 20 port-prioirty 32

Would this force VLAN 20 to go out on int fa0/3 and VLAN 30 to go out on fa0/2? I don't have any switches to work with and I kind of want to get this down. If this would not work, then any other suggestions would be very helpful.

SysAdmin4066

Changing the port priorities should work, I think you can try this in GNS3 with a router that supports the NM-ESW16 module. The 3640 does, I believe the 2600 series do as well. That should work though if I'm understanding what you're asking.

accely

I agree that should work. I'm getting ready to take the BCMSN exam so this was right up my alley

Cyanic

As long as fa0/2 and fa0/3 are going to either S1 OR S2 that should work.