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Summarizing Key Aspects of this Solution (1) Leverages existing and deployed L3VPN protocols (e.g. MP-BGP) and IP encapsulation techniques (e.g. GRE, L2TPv3) Scalability: Per-AFBR routing table: O(# of Internet Routes + # of AF island prefixes of attached islands) per-AFBR peering: O(# of remote AFBRs + # of attached AF island routers) per-local AFBR-to-remote AFBR paths: O(# of remote AFBRs) Security: RFC4111 provides framework Control Plane: BGP/TCP MD5, BGP/TCPoIPsec Data Plane: GRE keys, L2TPv3 cookie, IPsec Multicast: traditional multicast over softwire tunnels mVPN extensions |