Terminology
- Terminal
- P = provider (router)
- PE = provider edge (router)
- CE = customer edge (router)
- RR= Route Reflector (router)
- MPLS domain = Core = P + PE + RR
- Functional
- RR = to advertise BGP routes
- P = to provide core connectivity
- PE = provide connectivity between "P" and "CE"
- CE = provide connectivity between "PE" and customer network.
- Logical
- cef = cisco express forwarding
- Router-id = represent a router in both control plane an data plane.
- VRF = virtual routing & forwarding
- one physical router hosting multiple virtual routing table and forwarding table
- one VRF = one customer's network
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