2000-07 2012-02-22 1-63 Standards Action or Early Allocation policy 64-127 First Come First Served 128-240 Some recognized assignments below, others Reserved 241-254 Reserved for Private Use Not to be assigned 0 Reserved 1 Network Layer Reachability Information used for unicast forwarding 2 Network Layer Reachability Information used for multicast forwarding 3 Reserved 4 Network Layer Reachability Information (NLRI) with MPLS Labels 5 MCAST-VPN 6 Network Layer Reachability Information used for Dynamic Placement of Multi-Segment Pseudowires (TEMPORARY - Expires 2008-08-23) 7 Encapsulation SAFI 8-63 Unassigned 64 Tunnel SAFI 65 Virtual Private LAN Service (VPLS) 66 BGP MDT SAFI 67 BGP 4over6 SAFI 68 BGP 6over4 SAFI 69 Layer-1 VPN auto-discovery information 70-127 Unassigned 128 MPLS-labeled VPN address 129 Multicast for BGP/MPLS IP Virtual Private Networks (VPNs) 130-131 Reserved 132 Route Target constrains 133 IPv4 dissemination of flow specification rules 134 VPNv4 dissemination of flow specification rules 135-139 Reserved 140 VPN auto-discovery 141-240 Reserved 241-254 Private Use 255 Reserved Gargi Nalawade mailto:gargi&cisco.com 2004-01 Yong Cui mailto:cuiyong&tsinghua.edu.cn 2006-09-20