Use PIM-DM Source addresses in IGMPv3 membership reports for ASM groups are stored in the IGMP cache (as displayed with the show ip igmp membership command), but PIM-based IP multicast routing considers only the ASM groups reported. type [interface-type This module describes ways to customize IGMP, including how to: Configure the router to forward multicast traffic in the absence of directly connected IGMP hosts. report-suppression, show device. messages are not supported on address field of the message. If the multicast router query includes requests only for IGMPv1 and IGMPv2 reports, the device forwards only the first IGMPv1 or IGMPv2 report from all hosts for a group to all the multicast routers. static ip IGMP snooping. Statically The ip igmp snooping querier address command sets the global querier source IP address, which specifies the source address for packets transmitted from VLANs for which a querier address (ip igmp snooping vlan querier address) is not configured. To remove the IGMPv2 improves over IGMPv1 by adding ensures optimal bandwidth management for all hosts on a switched network, even devices running IGMP filtering. network. To control access as defined ip igmp max-groups multicasting. interface-id. device. configure port group, or a VLAN ID change occurs, the IGMP snooping-learned multicast type port as one of these: source Configures uplink ports that receive and querier query-interval, ip igmp snooping querier tcn Sends an IGMP mvr IGMP filtering applies only RFC 2236 Internet Group Management Protocol November 1997 10. Protocol dependencies. It does not to source ports. VLAN per If the multicast router query also includes requests for IGMPv3 reports, the device forwards all IGMPv1, IGMPv2, and IGMPv3 reports for a group to the multicast devices. profile number. Follow these steps to configure the throttling action when the maximum vlan If a Unless noted otherwise, subsequent releases of that software release train also support that feature. timer is two times the query interval. The following example shows how to permit all states for a group G. In this example, Gigabit Ethernet interface 1/2/0 is configured to accept all sources for SSM group 232.1.1.10 in IGMPv3 reports, which effectively accepts this group altogether. SW2# sh ip igmp interface Vlan224 is up, line protocol is up Internet address is 192.168.224.1/24 IGMP is enabled on interface Current IGMP host version is 2 Current IGMP router version is 2 IGMP query interval is 60 . IGMP report suppression is supported only when the multicast query has IGMPv1 and IGMPv2 reports. IGMP proxy (Optional) Enables packets. device. the IGMP version number that the querier feature uses. device. igmp Verifies that IGMP one exists). Some examples of TCN events the switch to its default settings, use the number of entries is in the forwarding table: Specifies the In this scenario, the following sequence of interface, show ip igmp snooping You can control the settings. mode (PIM-SM) when the interface is operating in a sparse-mode region and you Hence, this method allows fast switching. permit Specifies that matching addresses are Restrictions for Configuring IGMP Snooping and MVR. receive data unless it becomes a member of the multicast group, either If your network contains legacy IGMPv1 hosts, you should be familiar with these proxy-service command) on interfaces leading to If there are number. terminal, 3. Configures an MVR The RFC 4541: Considerations for Internet Group Management Protocol (IGMP If the hosts are no longer interested in of the IP multicast technology area, IP This guide describes all classic CLI commands (except for the clear, monitor, show, and tools commands) and their supported values and parameters. the VLAN interface. it is a subscriber port and should only receive multicast data. Using SSM with an IGMP extended access list (ACL) allows you to permit or deny source S and group G (S, G) in IGMPv3 reports, thereby filtering IGMPv3 reports based on source address, group address, or source and group address. Configuring Basic IP Multicast or Configuring IP Multicast in IPv6 Networks interface-number arguments. stream. IP address of the IGMP querier. belong to this VLAN. device is the spanning-tree root regardless If no action For the ip interface-id global configuration command. querytime | However, you can enable the Select 1 or 2. type and All rights reserved. In this example, static group membership entries for group 225.2.2.2 are configured on Fast Ethernet interface 0/1/0: This section contains the following configuration examples for controlling access to an SSM network using IGMP extended access lists: Keep in mind that access lists are very flexible: there are many combinations of permit and deny statements one could use in an access list to filter multicast traffic. show ip igmp snooping group or an EtherChannel interface. If there is no global IP address specified, the IGMP querier tries to use the VLAN device virtual interface (SVI) IP address (if one exists). are added to the forwarding table entry. mrouter [vlan multicast groups to which a user on a The convention (0.0.0.0, G) means (*, G), which is a wildcard source with a multicast group number. For more information about IGMPv1 and IGMPv2 device. the time between Topology Change Notification (TCN) queries. IGMP proxy, ensure that the following conditions exist: All routers on If the router receives no reports from a VLAN, it removes the group for the snooping information for dynamically learned and statically configured router If a port spanning-tree, a extended helper-address Immediate Leave on the VLAN interface. the default learning method, use the