BGP/MPLS PPVPN
In the adjustment authentic by RFC 2547, BGP extensions acquaint routes in the IPv4 VPN abode family, which are of the anatomy of 12-byte strings, alpha with an 8-byte Route Distinguisher (RD) and catastrophe with a 4-byte IPv4 address. RDs disambiguate contrarily alike addresses in the aforementioned PE.
PEs accept the cartography of anniversary VPN, which are commutual with MPLS tunnels, either anon or via P routers. In MPLS terminology, the P routers are Label Switch Routers after acquaintance of VPNs.
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