MP-BGP extension to BGP-4 allows different types of address clusters to be distributed simultaneously in BGP. Which of the following address clusters are supported by MP-BGP? (Multiple choice)

Question

Options

• AEVPN
• BIPv4
• CL3VPN
• DIPv4 multicast

• A
  100% (30)

Explanation

All four options are correct because MP-BGP (Multiprotocol BGP, RFC 4760) was specifically designed to be address-family agnostic, using MP_REACH_NLRI and MP_UNREACH_NLRI attributes to carry routing information for any protocol - not just the IPv4 unicast that original BGP-4 handled. IPv4 (B) is supported as the baseline address family inherited from BGP-4; IPv4 multicast (D) is a distinct SAFI (Subsequent Address Family Identifier) that lets BGP carry multicast topology separately from unicast; L3VPN (C) relies on MP-BGP to distribute VPNv4/VPNv6 routes between PE routers in MPLS networks (RFC 4364); and EVPN (A) uses MP-BGP as its control plane to signal MAC/IP bindings and overlay routes in modern data center fabrics (RFC 7432). This is an "all of the above" trap question - students who only associate BGP with IPv4 unicast may incorrectly exclude EVPN or multicast.

Memory tip: MP-BGP = Many Protocols. If you can name it as a network address family (IPv4 unicast, multicast, IPv6, L3VPN, EVPN, VPLS…), MP-BGP can carry it - that extensibility is the entire point of the RFC 4760 extension.

No community discussion yet for this question.