HP VPN Firewall Appliances Appendix Protocol Reference

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Table Of Contents

Title Page
Contents
IP routing basics
- Routing table
- Dynamic routing protocols
- Route preference
- Load sharing
- Route backup
- Route recursion
- Route redistribution
Static routing
Default route
RIP
- Overview
- RIP operation
- RIP versions
- RIP message format
- Supported RIP features
- Protocols and standards
OSPF
- Overview
- OSPF packets
- LSA types
- OSPF area
- Router types
- Route types
- Route calculation
- OSPF network types
- DR and BDR
  - DR and BDR election
- Protocols and standards
IS-IS
- Overview
- Terminology
- IS-IS address format
- NET
- IS-IS area
  - Level-1 and Level-2
  - Route leaking
- IS-IS network types
  - Network types
  - DIS and pseudonodes
- IS-IS PDUs
- Supported IS-IS features
- Protocols and standards
BGP
- BGP speaker and BGP peer
- BGP message types
- BGP path attributes
- BGP route selection
- BGP route advertisement rules
- BGP load balancing
- Settlements for problems in large-scale BGP networks
- MP-BGP
  - MP-BGP extended attributes
  - Address family
- BGP configuration views
- Protocols and standards
IPv6 static routing
IPv6 default route
RIPng
- Overview
- RIPng working mechanism
- RIPng packet format
  - Basic format
  - RTE format
- RIPng packet processing procedure
  - Request packet
  - Response packet
- Protocols and standards
OSPFv3
- Overview
- Packets
- LSA types
- Timers
- Supported features
- Protocols and standards
IPv6 IS-IS
- Overview
IPv6 BGP
Multicast overview
- Overview
- Multicast models
- Multicast architecture
  - Multicast addresses
    - IP multicast addresses
    - Ethernet multicast MAC addresses
  - Multicast protocols
- Multicast packet forwarding mechanism
Multicast routing and forwarding
- Overview
- RPF check mechanism
  - RPF check process
  - RPF check implementation in multicast
- Static multicast routes
  - Changing an RPF route
  - Creating an RPF route
- Multicast forwarding across unicast subnets
- Multicast traceroute
IGMP
- Overview
- IGMP versions
- IGMPv1 overview
- IGMPv2 overview
  - Querier election mechanism
  - "Leave group" mechanism
- IGMPv3 overview
  - Enhancements in control capability of hosts
  - Enhancements in query and report capabilities
- IGMP SSM mapping
- IGMP proxying
- Protocols and standards
PIM
- Overview
- PIM-DM overview
- PIM-SM overview
- Administrative scoping overview
  - Relationship between admin-scoped zones and the global-scoped zone
- PIM-SSM overview
- Relationship among PIM protocols
- Protocols and standards
MSDP
- Overview
- How MSDP works
- Protocols and standards
IPv6 multicast routing and forwarding
- Overview
- RPF check mechanism
- RPF check implementation in IPv6 multicast
- IPv6 multicast forwarding across IPv6 unicast subnets
IPv6 PIM
- Overview
- IPv6 PIM-DM overview
- IPv6 PIM-SM overview
- IPv6 PIM-SSM overview
- Relationship among IPv6 PIM protocols
- Protocols and standards
MLD
- Overview
- MLD versions
- How MLDv1 works
- How MLDv2 works
- MLD message types
  - MLD query message
  - MLD report message
- MLD SSM mapping
- MLD proxying
- Protocols and standards
Support and other resources
- Contacting HP
  - Subscription service
- Related information
  - Documents
  - Websites
- Conventions
Index

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Figure 75 Building an SPT in IPv6 PIM-SSM

As shown in Figure 75, Host B and Host C are IPv6 multicast information receivers. They send an MLDv2

report message to the respective DRs to announce that they are interested in the information about the

specific IPv6 multicast source S and that sent to the IPv6 multicast group G.

The DR that has received the report first determines whether the IPv6 group address in this message falls

in the IPv6 SSM group range and then does the following:

• If the IPv6 group address in the message is not in the IPv6 SSM group range, the IPv6 PIM-SSM

model is built. The DR sends a channel subscription message hop-by-hop toward the IPv6 multicast

source S.

An (S, G) entry is created on all routers on the path from the DR to the source. An SPT is thereby

built in the network, with the source S as its root and receivers as its leaves. This SPT is the

transmission channel in IPv6 PIM-SSM.

• If the IPv6 group address in the message is not in the IPv6 SSM group range, the receiver-side DR

sends a (*, G) join message to the RP, and the source-side DR registers the IPv6 multicast source.

In IPv6 PIM-SSM, the term "channel" refers to an IPv6 multicast group, and the term "channel

subscription" refers to a join message.

Relationship among IPv6 PIM protocols

In an IPv6 PIM network, IPv6 PIM-DM cannot work with IPv6 PIM-SM or IPv6 PIM-SSM. However, IPv6

PIM-SM, and IPv6 PIM-SSM can work together. For more information about MLD SSM mapping, see

"MLD SSM mapping."

Protocols and standards

• RFC 3973, Protocol Independent Multicast-Dense Mode(PIM-DM):Protocol Specification(Revised)

• RFC 4601, Protocol Independent Multicast-Sparse Mode (PIM-SM): Protocol Specification (Revised)

• RFC 3956, Embedding the Rendezvous Point (RP) Address in an IPv6 Multicast Address

• RFC 5059, Bootstrap Router (BSR) Mechanism for Protocol Independent Multicast (PIM)

Source

Server

Host A

Host B

Host C

Receiver

IPv6 multicast packets

SPT

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