MPLS – routingloop.net

MPLS L3 VPN Forwarding

I never grasped what’s so great about MPLS VPNs until I learned that core routers do not need to carry customer routes. This magic trick greatly reduces state in the MPLS network core. This article will follow a packet’s journey though an MPLS Layer 3 VPN. We will follow an ICMP echo request from CUST2_CE1’s

RT Constraint: A Scalability Technique for MPLS L3 VPNs

28JuneStevenHome Lab, MPLS, Routing

MPLS Layer 3 VPNs (L3 VPNs) are a highly scalable way to deliver private multitenant connectivity. This article will not focus on overall L3VPN operation but will focus on Route Target Constraint, a control plane scaling feature. I’ll be using the topology below for demonstration. Ther is a lot going on here, so I circled

What a Typo Taught Me About B2B Label Switching

24MayStevenHome Lab, MPLS, RoutingMPLS

I’m starting to dive into MPLS based technologies, an area where I have very little experience. I started out with a two “customer site” VPLS network. After getting that working, I added 3rd CE and PE pairing. I made a configuration mistake on PE3 that helped me understand VPLS and MPLS a little better. This

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Category Archives: MPLS

MPLS L3 VPN Forwarding

RT Constraint: A Scalability Technique for MPLS L3 VPNs

What a Typo Taught Me About B2B Label Switching