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Solution Overview (1) Basic Idea Leverage and reuse existing L3VPN functions and protocols where appropriate Identify/develop a set of Softwire encapsulations using standard/existing encapsulations Extend MP-BGP to enable egress AFBR(s) to advertise their softwire tunnel capabilties, encapsulation parameters and preferences to participating ingress AFBR nodes … thus forming the softwire mesh enable egress AFBR(s) to advertise AF prefixes and associated softwire(s) to use to reach those prefixes |