Deploying Datacenter MPLS/VPN on Junos
One of my recent projects has been deploying an MPLS/VPN architecture across a pair of smallish datacenters comprised entirely of Juniper gear. While I'm no stranger to MPLS/VPN, I am still a bit green to Junos, so it was a good learning exercise. My previous articles covering MPLS/VPN on Cisco IOS have been fairly popular, so I figured it would be worthwhile to cover a similar implementation in the Juniper world.
For our datacenters, we decided to implement a simple spine and leaf topology with a pair of core routers functioning as IBGP route reflectors and a pair of layer three ToR switches in each server rack. The spine is comprised of four layer three switches which run only MPLS and OSPF; they do not participate in BGP.
This article assume some basic familiarity with MPLS/VPN, so if you're new to the game, consider reading through these previous articles for some background before continuing: