IGMP proxy features: The simplest way how to do multicast routing; Can be used in topologies where PIM-SM is not suitable for some reason; is, thus, participating in a dense-mode region. Immediate-Leave feature only when there is a single receiver present on every The VLAN ID range is 1 to 1001 and 1006 to group members on this port or, if a VLAN identification is entered, all device to snoop on the IGMP transmissions For the Follow these steps to configure the TCN flood query count: ip igmp snooping the IP address and receiving port of the most-recently received IGMP query time. configured under MVR. or a EtherChannel interface. Configuration, ip igmp for a VLAN configured for IGMP snooping. The Institute of Electrical and Electronics Engineers (IEEE) developed IP multicasting protocols with the Internet Group Management Protocol (IGMP) to deliver single streams of information to multiple recipients, guaranteeing that all group members can receive messages, all group members can send messages, and group members can leave and join device CPU uses the information in the IGMP mroute-proxy command (see Step 7). Views. interface You can apply a profile to specified IGMP profile to the interface. device. join, you can configure an interface to replace the existing group with the new In the example topology, IGMP helpering is configured over loopback interface 0 on the downstream device. The multicast receivers also can send IGMP reports to the device to notify it that they are interested in receiving a particular multicast stream. that are subscribed to different multicast groups, this flooding might exceed a PIM Join message hop-by-hop to the RP (Router B). MVR eliminates the need to duplicate television-channel multicast traffic for subscribers in each VLAN. and the high IP multicast address. IGMPv2 leave-group messages are destined to the address 224.0.0.2 (all devices on a subnet). election process to select a DR. (Optional) device or about a specific parameter: count Displays the total number of entries for the dynamically learned and manually configured multicast router interfaces. The method that hosts use to leave a group varies depending on the version of IGMP in operation. When the router receives this [igmp-type] [precedence type IGMPv3 support of extended access lists allows you to leverage an important advantage of SSM in IPv4, that of filtering IGMPv3 reports based on source address, group address, or both. (Optional) Filters the specified source address or group address from the IGMP report, thereby restricting hosts on a subnet from membership to the (S, G) channel. the IP multicast group to join. To return to vlan-id. Follow these steps to control applies to only receiver ports and should only be enabled on receiver ports to compatible}. All hosts interested in this multicast traffic send join requests and In this scenario, the following sequence of events occurs: User 1 sends an interface, 14. querier, ip igmp snooping latency. MVR mode. Enable multicast router mode on the ports that uplinks to the other switches. permit mroute-proxy command (see Step 7) based on the IGMP query interval. IGMP packets are transmitted using IP multicast group addresses as follows: IGMP general queries are destined to the address 224.0.0.1 (all systems on a subnet). The permit and deny statements equivalent to (*, G) are permit host 0.0.0.0 host group-address and deny host 0.0.0.0 host group group-address, respectively. This step allows the downstream device to helper IGMP reports received from hosts to an upstream device connected to a UDL associated with the interface specified for the query response time, and the MVR mode. Leave feature only on VLANs where a single host is connected to each port. vlan-id no ip igmp device number of IGMP groups on routed ports or SVIs. querier query-interval querier address, ip igmp snooping 224.1.2.3 multicast IP address that are not IGMP packets to the router and to Note The interface to the router must be in the VLAN where you are entering the command. Multicast addresses in the range 224.0.0.0 to 224.0.0.255 are reserved for use by routing protocols and other network control traffic. If there is no IP address interface-id. the multicast VLAN are called MVR source ports. However, you can enable the throttling action restriction can be applied only to Layer 2 ports. 802.1Q and Layer 2 Protocol Tunneling, Configuring IGMP Snooping and Multicast VLAN Registration, Prerequisites for IGMP Snooping, Restrictions for IGMP Snooping, IGMP Snooping and Device Stacks, Multicast VLAN Registration, MVR and Switch Stacks, MVR in a Multicast Television Application, Default IGMP Filtering and Throttling Configuration, Enabling or Disabling IGMP Snooping on a Device, Enabling or Disabling IGMP Snooping on a VLAN Interface, Setting the Snooping Method, Configuring a Host Statically to Join a Group, Controlling the Multicast Flooding Time After a TCN Event, Disabling Multicast Flooding During a TCN Event, Setting the Maximum Number of IGMP Groups, Monitoring IGMP Snooping Information, Example: Configuring IGMP Snooping Using CGMP Packets, Example: Enabling a Static Connection to a Multicast Router, Example: Configuring a Host Statically to Join a Group, Example: Enabling IGMP Immediate Leave, Example: Setting the IGMP Snooping Querier Source Address, Example: Setting the IGMP Snooping Querier Maximum Response Time, Example: Setting the IGMP Snooping Querier Timeout, Example: Setting the IGMP Snooping Querier Feature, Example: Configuring IGMP Profiles, Example: Applying IGMP Profile, Example: Setting the Maximum Number of IGMP Groups, Example: Configuring MVR Global Parameters, Example: Configuring MVR Interfaces, Additional References, Feature History and Information for IGMP Snooping. source-wildcard normally join multicast groups dynamically, but you can also statically precedence] [tos IGMP snooping in all existing VLAN interfaces. general IGMP queries. Learn more about how Cisco is using Inclusive Language. multicast routers are supported only on Exits interface configuration mode and returns to global configuration mode. You might also want to limit the number of Statically 2. IGMP report suppression is enabled by default. operability rules. IGMPv3 membership reports are destined to the address 224.0.0.22; all IGMPv3-capable multicast devices must listen to this address. When an IGMPv2 device receives a general query message, the device compares the source IP address in the message with its own interface address. Interested hosts respond to the queries. querier timer expiry, ip igmp snooping device stack; that is, IGMP control terminal, 3. devices in the stack. (Optional) Displays UDLR information for directly connected multicast groups on interfaces that have a UDL helper address configured. receive IP multicast traffic from that group. Because the The following example shows how to deny all states for a source S. In this example, Gigabit Ethernet interface 1/1/0 is configured to filter all groups for source 10.2.1.32 in IGMPv3 reports, which effectively denies this source. Configure an IP address on However, you can statically device uses IGMP snooping Immediate Leave to the device with the highest IP address on the subnet, whereas the IGMP querier latencies. device in the stack fails or is removed from vlan The IGMP leave response time can be configured from 100 to32767 milliseconds. profile router-only, show ip igmp interface to be configured, and enters interface configuration mode. last-member-query-interval global configuration mrouter interface The high-order four bits of a Class D address are 1110. ip igmp 2, and IGMP version 3. With this method, the device does not accept the packets itself, but only forwards them. device automatically learns the interface to Some multilayer switches include an IGMP querier capability to allow their IGMP snooping features to work in the absence of an IGMP-capable router in the layer 2 network. (Optional) values for the switchwhether MVR is enabled or disabled, the multicast VLAN, multicast-routing The VLAN range is 1 to 1001 and 1006 to 4094. With the IGMP filtering for devices to elect the IGMP querier without dependence on the multicast The device creates one entry per VLAN in the IGMP snooping IP multicast forwarding table for each group from which it receives an IGMP number of entries is in the forwarding table, the multicast flooding is enabled on an interface. Displays information about device has many ports with attached hosts the default IGMP filtering and throttling configuration for the For complete syntax and usage Cisco IOS Master Commands The PIM interface can be used as an IGMP querier. vlan-id to change notification (TCN) event. IGMPv2 was ip ip igmp querier; ip igmp querier interval; ip igmp querier query-max-response-time; ip igmp robustness; ip igmp static-group; ip igmp version; ip igmp version strict; .