Layer 3 Routing with VRFs
Posted on 2014-02-27
Have a topology as follows:
L3 Switch (SWT1) - L2 P2P Link - L3 Switch (SWT2) - L2 P2P Link - L3 Switch (SWT3)
SWT1 is configured with VRFs (very basic configuration) for each VLAN - example:
ip vrf XXX
int vlan 100
ip vrf forwarding XXX
ip address 10.100.100.100 255.255.255.0
It also has a default route for each VRF, pointing to an ASA subinterface on the same subnet (Used for Internet Access) - not really relevant to the task.
SWT2 and SWT3 do not use VRFs and have global routing tables.
Task is to get traffic from a VRF subnet on SWT1 (10.100.100.0/24) to a subnet on SWT3 (10.200.200.0/24)
The hall thing is needed for Servers' Replication Traffic. The Servers preferably need to be in different subnets, hence am trying to understand if there is a way to get them to communicate when on different subnets, connected by Switches using these bizarre L2 Trunks with the added bonus that one of the switches is using VRFs.