I have an interesting scenario that I'm trying to wrap my head around. I'm hoping someone can lend some guidance on how I can set this up to work.
I wish I could add an image, but I can't seem to figure it out.
Essentially I have a Layer 3 CORE switch with various VLAN interfaces.
For example VLAN 4 is using network 10.80.4.0 /22. The inside interface or gateway for VLAN4 is 10.80.4.1 and it connects to the inside interface on the router at 10.80.4.254. The default route on the layer 3 switch is 10.80.4.254 which then routes to the MPLS/Internet
so some vrf's that live here are:
10.80.4.1 /22 VLAN 4
10.80.20.1 /22 VLAN 20
Here is the scenario:
I have another layer 3 switch that is doing routing as well, but there is a layer 2 switch in between physically downstream from the layer 3 CORE trunking the two vlans previously mentioned with only 1 vrf for management. Downstream from the layer 2 switch is my second layer 3 switch which has IP Routing enabled.
The vrf's on this Layer 3 switch are
10.200.4.1 /22 VLAN 4
10.200.20.1 /22 VLAN 20
I haven't trunked the 2nd layer 3 switch to the layer 2 switch because the networks differ between the VLANs ie. 10.80.x.x on the CORE and 10.200.x.x on the 2nd layer 3 switch.
How can I configure layer 3 routing so that I can accomplish the goal of having two private autonomous networks on my LAN and can reach the MPLS and internet from both?
This should help give an idea of what the physical looks like.