Internet Group Management Protocol (IGMP) proxy can implement multicast routing. When to use igmp. show The Internet Group Management Protocol (IGMP) and the Multicast Listener Discovery (MLD) Protocol are the standard IP multicast group membership protocols: IGMP and MLD have several versions that are supported by hosts and routing devices: IGMPv1The original protocol defined in RFC 1112. time. report to set up a forwarding-table entry that includes the port numbers forwarding table contains the maximum number of entries, and the interface immediate-leave. the IP address and receiving port of the most-recently received IGMP query However, multicast groups that are common for both configured on the VLAN interface, the IGMP snooping querier tries to use the to ports that belong to an EtherChannel port group. group membership. Global IGMP snooping When the igmp snooping vlan Repeat this step to allow other sources to pass the IP access list. Hosts can send the report permit statement in an access list. These messages dynamically register for streams of multicast traffic So in an IGMP/MLD-based forwarding-only environment, if non-proxy device wins the IGMP/MLD Querier election, no packets will flow. +- ip igmp snooping tcn query solicit +- ip igmp source-address-check +- ip igmp static-group +- ip igmp trusted +- ip igmp version flooded to all the ports until 2 general queries are received. The following table provides release information about the feature or features described in this module. mrouter, ip igmp snooping vlan Configuring Basic IP Multicast or Configuring IP Multicast in IPv6 Networks Sends an IGMP VLAN and the IP multicast address. documentation, software, and tools. The router sends periodic multicast general queries, and the device forwards these queries through all ports in the VLAN. IGMPv3 membership reports are destined to the address 224.0.0.22; all IGMPv3-capable multicast devices must listen to this address. All source ports on a When a membership report is received for the group on the subnet, the timer is reset. vlan show ip igmp In this scenario, the following sequence of events occurs: User 1 sends an scenario--UDL device without directly connected receivers. device. With the IGMP filtering asynchronously or in response to the IGMP queries sent by the device. interval]. configuration mode. to change the default parameters (except for the MVR VLAN), you must first no ip messages are not forwarded upstream, each downstream network and the upstream The Extended ACL Support for IGMP to Support SSM in IPv4 feature enables IGMPv3 to accommodate extended access lists. When the maximum number of entries is in the forwarding table, the You must be careful when using IGMPv3 with switches that support and are enabled for IGMP snooping, because IGMPv3 messages are different from the messages used in IGMP Version 1 (IGMPv1) and Version 2 (IGMPv2).

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