MSTP Setup

[Simon Hinge]

I Want to setup a 3 switch MSTP to use our two 100MB link lines load balanced/HA,

we have 15 or so vlans (10-25) so we can split into two instances over the two lines.

network diagram:

SW1
|------| |-----|
| |
SW2------SW3

The links to SW1 are the 100MB link lines, the link between SW2 and SW3 is a 1GbE fibre as they are different ends of the same building.

is this configuration correct for what I am trying to achieve?

sw1:

spanning-tree protocol-version mstp
spanning-tree config-name "LINK"
spanning-tree cobfig-revision 1
spanning-tree instance 1 vlan 10 12 14 16 18 20 22 24
spanning-tree instance 2 vlan 11 13 15 17 19 21 23 25
spanning-tree

sw2:

spanning-tree protocol-version mstp
spanning-tree config-name "LINK"
spanning-tree cobfig-revision 1
spanning-tree instance 1 vlan 10 12 14 16 18 20 22 24
spanning-tree instance 2 vlan 11 13 15 17 19 21 23 25
spanning-tree instance 1 priority 1
spanning-tree instance 2 priority 0
spanning-tree priority 1
spanning-tree

sw3:

spanning-tree protocol-version mstp
spanning-tree config-name "LINK"
spanning-tree cobfig-revision 1
spanning-tree instance 1 vlan 10 12 14 16 18 20 22 24
spanning-tree instance 2 vlan 11 13 15 17 19 21 23 25
spanning-tree instance 1 priority 0
spanning-tree instance 2 priority 1
spanning-tree priority 0
spanning-tree

Thanks

Simon

[Michael_Breuer · Accepted solution]

Hello Simon,

the config is fine except the typo in line 3.

Cheers,

Michael

[Jaap Laaij]

Hi Simon,

Are these your core-switches with other switches, not shown, behind them?