Inter Vlan Traffic Flow

[Nazgulero]

Hello all,

I am wondering about the follwoing scenario:

I have configured inter-VLAN routing on my core Layer 3 switch, but the root for my VLANs is not that core switch, but another distribution layer switch. How would traffic flow in this scenario ? Let's say there are two VLANs, VLAN 3 and VLAN 4. According to STP rules, all traffic would need to go through the root, but what about the inter-VLAN routing ? Would traffic from VLAN 3 to VLAN 4 go through the root first and then back to the core, for the routing ?
Sort of confusing, I am just trying to grasp the concepts in such a scenario.
Thanks for your help in advance.

Naz

 

[jneiberger]

Your devices will follow the configured L2 path to reach their L3 default gateway. It's up to you configure tweak STP so that the L2 path is optimal. Why not make the L3 switch the root for the network? Anything else is probably sub-optimal.