What is IGMP query interval?

IGMP last member query interval—In IGMPv2, it sets the interval at which a querier sends group-specific queries after receiving a leave message. In IGMPv3, it sets the interval at which a querier sends group-and-source-specific queries after receiving a report that changes multicast source and group mappings.

How enable IGMP snooping in Linux?

To enable IGMP and MLD snooping for a bridge, set bridge-mcquerier to 1 in the bridge stanza. By default, the source IP address of IGMP queries is 0.0. 0.0. To set the source IP address of the queries to be the bridge IP address, configure bridge-mcqifaddr 1 .

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. If queries are sent at a rate lower than the aging time, the subscriber cannot receive the Multicast packets. This is performed in the IGMP/MLD Snooping IP Multicast Group page.

Do I need an IGMP Querier?

Without IGMP snooping, switches will flood multicast traffic everywhere, treating it like broadcast traffic. IGMP snooping works pretty well but it does require a multicast router in the network.

Is IGMP multicast?

IGMP is a network layer protocol used to set up multicasting on networks that use the Internet Protocol version 4 (IPv4). Specifically, IGMP allows devices to join a multicasting group.

What multicast rate should I use?

First off, the best setting for multicast rate for your router is usually the lowest amount. Lower mbps value will typically benefit your normal web uses like browsing or file loading. In this case, You should turn off or disable IGMP Snooping and set the multicast rate to be fixed at the lowest value possible.

Do I need to enable IGMP snooping?

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.

Should I turn on IGMP snooping?

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.

What is Layer 2 multicast?

Layer 2 Multicast allows Layer 2 switches to listen for IGMP (Internet Group Management Protocol) packets between IGMP Querier and user hosts to establish multicast forwarding table and to manage and control transmission of packets. Take IGMP Snooping as an example.

What does IGMP snooping do?

IGMP snooping checks IGMP packets passing through the network, picks out the group registration, and configures Multicasting accordingly. Without IGMP Querying/Snooping, Multicast traffic is treated in the same manner as a Broadcast transmission, which forwards packets to all ports on the network.

How do I disable IGMP snooping?

From the menu at the top of the page, select ADVANCED SETTINGS. The PRESET MODES page displays. Select Multicast. Enable or disable IGMP snooping by clicking the slider in the IGMP Snooping section.