Tag Archives: mpls vpn

MPLS: OSPF sham-links

Introduction The provider’s MPLS cloud has three routers namely – R1 (P-router), R2 (PE-R2) and R3 (PE-R3). These routers formed OSPF adjacency with one another. R2 and R3 are iBGP neighbors peering with each other’s loopback address. The TTL propagation … Continue reading

Posted in MPLS, OSPF, Route, WAN | Tagged , , , , , | Leave a comment

MPLS Layer 3 VPN

Acknowledgement Without MR.Keith Barker’s 21 minutes video instruction, constructing MPLS VPN lab will take a longer time. His 21 minutes video instruction summarizes all. MR. Keith Barker has amazing skills to translate complicated concepts into simpler and easier to understand … Continue reading

Posted in BGP, MPLS, OSPF, Route, WAN | Tagged , , , , , | Leave a comment

MPLS VPN: VRF

MPLS VPN building blocks 1. Virtual routing and forwarding (VRF) – This creates logical routing instance, each virtual instance is separated such that virtual instances to instances are not reachable. 2. MP-BGP – BGP is extended to distribute MPLS VPN … Continue reading

Posted in MPLS, Security, WAN | Tagged , , , , , | 4 Comments