PVSTP Configuration

[fabio.marino]

Hi I'm Fabio.

I'm getting a mistake with PVSTPconfiguration.

Briefly, I want:

1)Swicth A primary root for VLAN 22, 23. Secondary root for VLAN 21

2)Switch B primary root for VLAN 21. Secondary root for VLAN 22, 23

3)I know how to configure primary root and secondary root, but i have some doubts about vlan configurations.

Questions:

A)How i have to set the STP mode for each switch? Transparent? Server? Client?

B)Where i have to create VLAN 21, 22, 23?

Thanks, Fabio.

[Jon Marshall · Accepted solution]

Fabio

The answer to question b) depends entirely on what you do in question a).

Do you mean VTP mode rather than STP mode ? A switch can either be a VTP server, client or transparent.

If transparent then you have to configure the vlans on all switches.

If you make switch A or B or both VTP server then you can configure C to be a client and configure the vlans on just one of the switches, either A or B if they are both VTP servers. If you just make A VTP server then configure B & C to be client and then configure the vlans on switch A and they will be propogated to B & C.

Once the vlans are there on all switches then on A -

spanning-tree vlan 22 - 23 root primary

spanning-tree vlan 21 root secondary

on B -

spanning-tree vlan 21 root primary

spanning-tree vlan 22 - 23 root secondary

Jon

[fabio.marino]

Hi Jon, thanks now i get my misunderstanding.

I put togheter two different concepts, VTP and PVSTP.

Good job Jon, regards Fabio.