This working group is responsible for defining and specifying a limited number of solutions for supporting provider-provisioned Layer-3 (routed) Virtual Private Networks (L3VPNs). The WG is responsible for standardization of the following solutions: 1. BGP/MPLS IP VPNs (based on RFC 2547) 2. IP VPNs using Virtual Routers 3. CE-based VPNs using IPsec The following VPN deployment scenarios will be considered by the WG: 1. Internet-wide: VPN sites attached to arbitrary points in the Internet 2. Single service provider (SP)/single AS: VPN sites attached to the network of a single provider within the scope of a single AS 3. Single SP/multiple AS'es: VPN sites attached to the network of a single provider consisting of multiple AS'es 4. Cooperating SPs: VPN sites attached to networks of different providers that cooperate with each other to provide VPN service The WG will address deployment of the following features in a VPN environment: 1. IP Multicast 2. IPv6 As part of this effort the WG will work on the following tasks (additional work items will require rechartering): 1. Requirements and framework for Layer 3 VPNs 2. Solution documents for each approach listed above (including applicability statements) 3. MIB definitions for each approach 4. Security mechanisms for each approach As a general rule, the WG will not create new protocols, but will provide functional requirements for extensions of the existing protocols that will be discussed in the protocol-specific WGs. L3VPN WG will review proposed protocol extensions for L3VPNs before they are recommended to appropriate protocol-specific WGs. As stated above, the WG will define an IPv6 over BGP / MPLS VPN solution. This will include a forwarding plane component and a control plane component. In the forwarding plane, IPv6 datagrams will be encapsulated within an MPLS header. If any aspect of IPv6 forwarding over MPLS is as yet undefined, the L3VPN WG will defer to the MPLS and appropriate IPv6 WGs. On the control plane, BGP extensions may also need to be defined. In this respect, the L3VPN WG will defer to the IDR and appropriate IPv6 WGs. QoS support is excluded from the charter at this time. It may be considered for inclusion in an updated charter at a later time. Future work items may also include OAM support.