What is the difference between IGMPv2 and IGMPv3?
IGMPv2 improves IGMPv1 by adding the ability for a host to signal desire to leave a multicast group. IGMPv3 improves IGMPv2 by supporting source-specific multicast and introduces membership report aggregation. These versions are backwards compatible.
What triggers IGMP report messages?
A membership report message is sent by a host whenever it joins a multicast group, and when responding to Membership Queries sent by an IGMP router that is functioning as a Querier.
What is the destination of the IGMP messages?
IGMP Membership Report messages : IGMP Membership Report messages are sent by multicast clients inside the subnet to the router to inform the intention to join a multicast group or in response to a Membership Query (MQ) message sent by the router.
Is IGMPv3 backwards compatible with IGMPv2?
IGMPv3 supports source-specific join and leave messages and is backward compatible with IGMPv1 and IGMPv2.
What is IGMP query?
The IGMP/MLD Snooping Querier is used to support a Layer 2 Multicast domain of snooping switches in the absence of a Multicast router. For example, where Multicast content is provided by a local server, but the router (if one exists) on that network does not support Multicast.
What is IGMP join message?
Report (Join) A message sent by a host to the querier to indicate that the host wants to be or is a member of a given group indicated in the report message. Leave group. A message sent by a host to the querier to indicate that the host has ceased to be a member of a specific multicast group.
Do I need IGMP?
When to Enable IGMP Snooping for Home Use. For a home based network, you should enable it when you frequently use any kind of streaming or mirroring from your devices to stream to Apple TV or Chromecast. In some brand firmware such as Asus, enabling IGMP Snooping can fix some of the Apple TV Airplay mirroring issues.
Is IGMPv3 backwards compatible?
What message packet format are IGMPv3 response reports sent to?
These reports are sent to 224.0.0.22. The message packet format in IGMPv3: This field is ignored for message types other than membership query. For membership query type, it is the maximum time allowed before sending a response report.
What are the fields in IGMPv3 messages?
In other type of IGMPv3 messages, it is set to 0. The Maximum Response Time field has its unit in 0.1 second (1/10th of a second). The Checksum field is 16-bit in length and it contains a 16-bit checksum for the message. Group Address field in IGMPv3 message contains the Class D multicast address of the multicast group.
What is the maximum response time field of IGMPv3 message used for?
The Maximum Response Time field of IGMPv3 message is used in Membership Query (MQ) messages. Maximum Response Time field specifies the maximum time a host can wait before sending a Membership Report message for a corresponding Membership Query message. The Maximum Response Time field is for Membership Query type of messages.
What is the IGMPv2 communication protocol?
IGMPv2 is the revised version of IGMPv1 communication protocol. It has added functionality of leaving the multicast group using group membership. This field is ignored for message types other than membership query. For membership query type, it is the maximum time allowed before sending a response report.