MPLS VPN Components 5. MPLS as the forwarding mechanism

VPN B10.3.0.0

VPN A10.1.0.0

VPN A11.5.0.0

PE

PE

CE

CE

CE

VPN B10.1.0.0

VPN B10.2.0.0

VPN A11.6.0.0

PE

VPN A10.2.0.0

CE

• Plain IP is used between PE routers and CE routers

• MPLS is used within the core, i.e. between P and PE routers

• MPLS is used to label switch packets from PE router to PE router along LSPs

CE

CE

CE

PE

P

P

P

P

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