l3vpn-3----Page:31
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35
|
Inter-AS Procedures First Model – Tunnel spans multiple ASs Support for Unicast VPN Option A, B and C “RPF Attribute” to get around Next-Hop Rewrite in Option B PIM Extension to carry the proxy address when PIM P-Multicast Trees are used and P routers don’t have the route to the ingress PE Second Model – Each AS can have its own tunneling mechanism for intra-AS tunnels Overlay Inter-AS tunnel on top of the intra-AS tunnels Build on BGP MVPN Auto-discovery and BGP MVPN-Tunnel Binding Support for Unicast VPN Option A, B and C |