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Which is better IGMP v2 or v3?
IGMP Versions Differences IGMPv2 improves over IGMPv1 by adding the ability for a host to signal desire to leave a multicast group and IGMPv3 improves over IGMPv2 mainly by adding the ability to listen to multicast originating from a set of source IP addresses only.
What is IGMP proxy v2 or v3?
IGMP Proxy provides a means for routers to receive any or all multicast traffic from an upstream device if the router is not able to run PIM and runs only IGMP. IGMP Proxy supports IGMP v1, v2, and v3. When queried, the router sends group membership reports for the groups learned. …
What is IGMP v3?
Version 3 of IGMP adds support for “source filtering”, that is, the ability for a system to report interest in receiving packets *only* from specific source addresses, or from *all but* specific source addresses, sent to a particular multicast address.
What is IGMP v2?
IGMP version 2 is the “enhanced” version of IGMP version 1. One of the major reasons for a new version was to improve the “leave” mechanism. In IGMP version 1, hosts just stop listening to the multicast group address but they never report this to the router.
Why is IGMP needed?
The Internet Group Management Protocol (IGMP) manages the membership of hosts and routing devices in multicast groups. IP hosts use IGMP to report their multicast group memberships to any immediately neighboring multicast routing devices.
Is there support for IGMPv3 join and leave messages?
The switch supports IGMPv3 snooping based only on the destination multicast IP address. It does not support snooping based on a source IP address or proxy report. IGMPv3 join and leave messages are not supported on switches running IGMP filtering or Multicast VLAN registration (MVR).
What are the different types of IGMP filters?
IGMP filtering is typically used in access switches connected to end-user devices. There are three different types of IGMP filters: IGMP group and channel access control, several IGMP groups and channels limit, and an IGMP minimum version.
How does IGMP control the flow of multicast traffic?
IGMP provides a means to automatically control and limit the flow of multicast traffic throughout your network with the use of special multicast queriers and hosts. A querier is a network device, such as a router, that sends query messages to discover which network devices are members of a given multicast group.
How does IGMP filtering work in Catalyst 6500?
IGMP filtering allows users to configure filters on a switch virtual interface (SVI), a per-port, or a per-port per-VLAN basis to control the propagation of IGMP traffic through the network. By managing the IGMP traffic, IGMP filtering provides the capability to manage IGMP snooping, which in turn controls the forwarding of multicast traffic.