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 within the MPLS cloud was suppressed with no mpls ip propagate-ttl command. This is to … Continue reading MPLS: OSPF sham-links

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 concepts. Now it is clearer to me and I believe it will be easier on … Continue reading MPLS Layer 3 VPN

MPLS: Frame-mode MPLS configuration

Step 1: Enable CEF 1841-1# ip cef 1841-2# ip cef 3825-1# ip cef Step 2: Configure IGP 1841-1# router ospf 1  router-id  log-adjacency-changes  passive-interface default  no passive-interface FastEthernet0/0  network area 0 3825-1# router ospf 1  router-id  log-adjacency-changes  passive-interface default  no passive-interface GigabitEthernet0/0  no passive-interface GigabitEthernet0/1  network area 0  network … Continue reading MPLS: Frame-mode MPLS configuration