l3vpn-6----Page:11
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
|
draft-defeng-l3vpn-ipv4-ipv6-hybrid-01 Characteristics of Case 2 Needs no VPN-IPv6 AFI in the backbone; PE assigns private IPv4 addresses for IPv6 site, and supports private IPv4 address NAT-PT; Extend MP-BGP protocol by adding an Extended Community attribute: If-V6-Site to identify IPv6 sites; IPv6 routes are mapped to IPv4 NAT-PT prefix at PE and true IPv6 routes are distributed across backbone as the “value” of If-V6-Site attribute of IPv4 NAT-PT prefix through MP-BGP; |