Working of IP MPLS MPLS Encapsulation: Label Stack Penultimate Hop Popping Label Switched Path and Routers Control and Data Plane IP MPLS Tables What is VRF? Ankur Mittal Senior Manager/RailTel Need for VRF Route Distinguisher Route Target RD RT Working and MP-BGP Switching Advantages MPLS Performance
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Working of IP MPLS
MPLS Encapsulation: Label Stack
Penultimate Hop Popping
Label Switched Path and
Routers
Control and Data Plane
IP MPLS Tables
What is VRF?
Ankur Mittal
Senior
Manager/RailTel
Need for VRF
Route Distinguisher
Route Target
RD RT Working and MP-BGP
Switching Advantages
MPLS Performance
Certain link layer technologies can carry label as a part of their link layer header
e.g ATM & Frame Relay
Link layers that do not support labels in their header carry them in a “shim” label header MPLS header is pre-pended to packet with a push operation at ingress node
Label is added immediately after Layer 2 encapsulation header
Packet is restored at the end of the LSP with a pop operation
Normally the label stack is popped at penultimate node