Good lab to get an understanding of doing VRF Lite on the CE routers which can be done when a customer subscribes to more then 1 VRF at a site but with only 1 CE router.
From the CE's perspective, it has multiple logical (can be physical) interfaces up stream to the PE. Each link is put into it's own VRF. Downstream to other customer internal routers, each link is put into the respective VRFs. The VPN/VRF table is extended to the CEs. This segregates the 2 networks even when there's only 1 CE. One thing to note, on the CE's there's no need to import or export Route Targets, that's still done on the PE.
The PE's put the logical interfaces into different VRFs and reference the same RDs used on the CEs for their corresponding links/VRFs, for route targets. Basically the PE configuration stays the same EXCEPT for the fact the link to the CE is a single physical link but with multiple logical links.
Good lab to review and build by just looking at the topology.
MUST READ: Meaningful Availability
4 years ago
