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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