In the following diagram we have a very Basic MPLS network to demonstrate how MPLS Layer 3 VPNs work. In the Service Provider cloud we are running OSPF between R3,R1,R5, and R6. R3 and R6 are running BGP within the SP and are peering with each other, though NOT directly connected.
Our customer routers are set up [...]
MPLS Study Notes Terminology
Penultimate Hop Popping
RFC 3031
Multiprotcol
Transport diff payloads
-Ethernet, FRLY, ATM,IPv4, IPv6
Layer 3 MPLS VPN (RFC2547) will be the focus of the 4.0 R&S Exam.
Label Switching
Labels used to route(switch)traffic instead of normal IPv4/IPv5 route.
Similar to how FRLY DLCI or ATM VPI/VCI works….
Labels are locally significant between each adjacent neighbor.
MPLS TE(Traffic Engineering), fast convergence…
SP no longer has [...]
