In this blogtorial I am going to show you a quick how-to on implementing L2VPN and more specifically Virtual Private Wire Service (EoMPLS Port Mode). VPWS can save money thus increasing the revenue for service providers because P2P circuits are usually more expensive. We are going to be configuring EoMPLS (Ethernet Over MPLS - Port Mode). Note: EoMPLS Modes - Port Mode, VLAN mode and VLAN Re-write mode. AToM (Any transport over MPLS) is sort of the umbrella which covers EoMPLS, FRoMPLS, and ATMoMPLS.
In my previous blogtorial we saw how we can deploy route reflectors to circumvent the need for iBGP full mesh design. And my good friend "IT GURU" Tom brought up a good point about redundancy. So in this blogtorial we are going to see how we can configure dual route reflectors to avoid single point of failure (SPOF).
Consider the topology below.
Imagine that R3 and R4 in Sparks, R5 and R6 are in Vegas and R1 in Reno and R2 in Wells. If Reno Route reflector goes down all remote locations will still able to get to all other locations.