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 66 IPv6 multicast data transmission through a tunnel

As shown in Figure 66, with a GRE tunnel established between the multicast routers Router A and Router

B, Router A encapsulates the IPv6 multicast data in unicast IPv6 packets, and forwards them to Router B

across the GRE tunnel through unicast routers. Then, Router B strips off the unicast IPv6 header and

continues to forward the IPv6 multicast data to the receivers.