Ipv6 mbgp configuration, Ipv6 mbgp overview, Ipv6 mbgp configuration task list – H3C Technologies H3C S10500 Series Switches User Manual

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IPv6 MBGP configuration

NOTE:
•

The term

router in this document refers to both routers and Layer 3 switches.

•

This chapter only describes configuration for IPv6 MBGP. For IPv6 BGP related information, see

Layer

3—IP Routing Configuration Guide.

IPv6 MBGP overview

IETF defined Multiprotocol BGP (MP-BGP) to carry routing information for multiple network-layer

protocols.
For an IPv6 network, the topology for IPv6 multicast might be different from that for IPv6 unicast. To

distinguish them, the MP-BGP enables BGP to carry the IPv6 unicast Network Layer Reachability
Information (NLRI) and IPv6 multicast NLRI separately, and the multicast NLRI performs reverse path

forwarding (RPF) exclusively. In this way, route selection for a destination through the IPv6 unicast routing

table and through the IPv6 multicast routing table have different results, ensuring consistent unicast

forwarding and normal multicast between domains.
MP-BGP is defined in RFC 2858 (Multiprotocol Extensions for BGP-4). The application of MP-BGP on IPv6

multicast is called IPv6 Multicast BGP (IPv6 MBGP).

NOTE:
•

This document covers configuration tasks related to MP-BGP for IPv6 multicast only. For BGP related
information, see

Layer 3—IP Routing Configuration Guide.

•

For information about RPF, see the chapter “Multicast routing and forwarding configuration.”

IPv6 MBGP configuration task list

Complete the following tasks to configure IPv6 MBGP:

Task

Remarks

Configuring an IPv6 MBGP peer

Required