R21xx-HP FlexFabric 11900 IP Multicast Configuration Guide
Table Of Contents
- Title Page
- Contents
- Multicast overview
- Configuring IGMP snooping
- Overview
- IGMP snooping configuration task list
- Configuring basic IGMP snooping functions
- Configuring IGMP snooping port functions
- Configuring IGMP snooping policies
- Displaying and maintaining IGMP snooping
- IGMP snooping configuration examples
- Troubleshooting IGMP snooping
- Configuring multicast routing and forwarding
- Configuring IGMP
- Configuring PIM
- Overview
- Configuring PIM-DM
- Configuring PIM-SM
- Configuring common PIM features
- Displaying and maintaining PIM
- PIM configuration examples
- Troubleshooting PIM
- Configuring MLD snooping
- Overview
- MLD snooping configuration task list
- Configuring basic MLD snooping functions
- Configuring MLD snooping port functions
- Configuring MLD snooping policies
- Displaying and maintaining MLD snooping
- MLD snooping configuration examples
- Troubleshooting MLD snooping
- Configuring IPv6 multicast routing and forwarding
- Configuring MLD
- Configuring IPv6 PIM
- PIM overview
- Configuring IPv6 PIM-DM
- Configuring IPv6 PIM-SM
- Configuring common IPv6 PIM features
- Displaying and maintaining IPv6 PIM
- IPv6 PIM configuration examples
- Troubleshooting IPv6 PIM
- Support and other resources
- Index
55
Enhancements in query and report capabilities
• Query message carrying the source addresses
IGMPv3 is compatible with IGMPv1 and IGMPv2 and supports general queries and group-specific
queries. It also introduces group-and-source-specific queries.
{ A general query does not carry a group address or a source address.
{ A group-specific query carries a group address, but no source address.
{ A group-and-source-specific query carries a group address and one or more source addresses.
• Reports containing multiple group records
Unlike an IGMPv1 or IGMPv2 report message, an IGMPv3 report message is destined to
224.0.0.22 and contains one or more group records. Each group record contains a multicast
group address and a multicast source address list.
Group records include the following categories:
{ IS_IN—The source filtering mode is Include. The report sender requests the multicast data from
only the sources defined in the specified multicast source list.
{ IS_EX—The source filtering mode is Exclude. The report sender requests the multicast data from
any sources except those defined in the specified multicast source list.
{ TO_IN—The filtering mode has changed from Exclude to Include.
{ TO_EX—The filtering mode has changed from Include to Exclude.
{ ALLOW—The Source Address fields in this group record contain a list of the additional sources
from which the system wants to obtain data for packets sent to the specified multicast address.
If the change was to an Include source list, these sources are the addresses that were added to
the list. If the change was to an Exclude source list, these sources are the addresses that were
deleted from the list.
{ BLOCK—The Source Address fields in this group record contain a list of the sources from which
the system no longer wants to obtain data for packets sent to the specified multicast address. If
the change was to an Include source list, these sources are the addresses that were deleted
from the list. If the change was to an Exclude source list, these sources are the addresses that
were added to the list.
Protocols and standards
• RFC 1112, Host Extensions for IP Multicasting
• RFC 2236, Internet Group Management Protocol, Version 2
• RFC 3376, Internet Group Management Protocol, Version 3