MPLS VPN TopologiesExtranet / Overlapping VPNs

Site-1

VRFfor site-1

N1,NH=CE1N2,NH=PE2

PE1

N1

Site-3

VPN-IPv4 updates exchanged between PEs:

RD:N1, NH=PE1, Label=IntCE1, RT=REDRD:N2, NH=PE2, Label=IntCE2, RT=RED,GREENRD:N3, NH=PE3, Label=IntCE3, RT=GREEN

VRFfor site-3

N2,NH=PE2N3,NH=CE3

Route-Target Export GREEN

Route-Target Import GREEN

Site-2

N3

PE3

PE2

VRFfor site-2

N1,NH=PE1N2,NH=CE2N3,NH=PE3

Route-Target Export RED

Route-Target Import RED

Route-Target Export RED

Route-Target Export GREEN

Route-Target Import RED

Route-Target Import GREEN

Site-2

N2

Site-1

N1

Site-3

N3

N2

Site-2

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