HP 6125G HP 6125G & 6125G/XG Blade Switches IP Multicast Configuration - Page 357

Configuring IPv6 MBGP, IPv6 MBGP overview, IPv6 MBGP configuration task list

Page 357 highlights

Configuring IPv6 MBGP This chapter covers configuration tasks related to multiprotocol BGP for IPv6 multicast. For information about BGP and IPv6 BGP, see Layer 3-IP Routing Configuration Guide. The term "router" in this chapter refers to both routers and Layer 3 switches. 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. For information about RPF, see "Configuring multicast routing and forwarding." 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). IPv6 MBGP configuration task list Task Configuring basic IPv6 MBGP functions Configuring an IPv6 MBGP peer Configuring a preferred value for routes from a peer or a peer group Injecting a local IPv6 MBGP route Configuring IPv6 MBGP route redistribution Controlling route distribution and reception Configuring IPv6 MBGP route summarization Advertising a default route to a peer or peer group Configuring outbound IPv6 MBGP route filtering Configuring inbound IPv6 MBGP route filtering Configuring IPv6 MBGP route dampening Configuring IPv6 MBGP route preferences Configuring IPv6 MBGP route attributes Configuring the default local preference Configuring the MED attribute Configuring the NEXT_HOP attribute Configuring the AS_PATH attribute Tuning and Configuring IPv6 MBGP soft reset 346 Remarks Required Optional Optional Optional Optional Optional Optional Optional Optional Optional Optional Optional Optional

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346
Configuring IPv6 MBGP
This chapter covers configuration tasks related to multiprotocol BGP for IPv6 multicast. For information
about BGP and IPv6 BGP, see
Layer 3—IP Routing Configuration Guide
.
The term "router" in this chapter refers to both routers and Layer 3 switches.
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. For information about RPF, see "
Configuring
multicast routing and forwarding
."
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).
IPv6 MBGP configuration task list
Task
Remarks
Configuring basic
IPv6 MBGP functions
Configuring an IPv6 MBGP peer
Required
Configuring a preferred value for routes from a peer or a peer
group
Optional
Controlling route
distribution and
reception
Injecting a local IPv6 MBGP route
Optional
Configuring IPv6 MBGP route redistribution
Optional
Configuring IPv6 MBGP route summarization
Optional
Advertising a default route to a peer or peer group
Optional
Configuring outbound IPv6 MBGP route filtering
Optional
Configuring inbound IPv6 MBGP route filtering
Optional
Configuring IPv6 MBGP route dampening
Optional
Configuring IPv6
MBGP route
attributes
Configuring IPv6 MBGP route preferences
Optional
Configuring the default local preference
Configuring the MED attribute
Configuring the NEXT_HOP attribute
Optional
Configuring the AS_PATH attribute
Optional
Tuning and
Configuring IPv6 MBGP soft reset
Optional