MPLS VPN Topologies Hub Site Internet Access
Site-1
PE1
N1
Site-3
VRF for site-3
N1,NH=PE1 N2,NH=PE2 N3,NH=CE3
Default=F/W
Site-2
N2
N3
PE2
VRF for site-2
N1,NH=PE1 N2,NH=CE2 N3,NH=PE3
Default=PE3
VRF for site-1
N1,NH=CE1 N2,NH=PE2 N3,NH=PE3
Default=PE3
PE3
Frame-relay switching
Site-2
N2
Site-1
N1
Site-3
Sub-Interface for VPN
Sub-Interface for Internet
Global Routing Table
Default Route to RED VPN
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