What is IGMP querier address?
By default, the source IP address of IGMP Query messages sent by the IGMP snooping querier is 192.168. 0.1.
What happens if IGMP snooping is disabled?
When disabled, the IGMP queries in VLAN and the reports from hosts are flooded. Thus IGMP Snooping proxy prevents a sudden burst in IGMP report traffic in response to queries and reduces the reports IGMP querier needs to process.
How is IGMP querier elected?
Querier election process: when there are two routers in the same subnet then only one of them should send query messages. The election ensures only one router becomes the active querier. The router with the lowest IP address becomes the active querier.
How do I disable IGMP querier?
To return to the default, use the no form of this command. To enable IGMP Snooping querier globally, use the ip igmp snooping querier enable command in switch configuration mode. To disable the IGMP Snooping querier globally, use the no form of this command. This command has no arguments.
Why would you want to disable IGMP Snooping?
By default, traffic from unknown addresses is allowed. In rare circumstances, such as when you are having trouble with a streaming application, you might want to turn off IGMP snooping temporarily or allow traffic from unknown multicast addresses.
How do I check my IGMP querier?
To run the IGMP Snooping querier on a VLAN, you have to enable it globally and on the VLAN. To enable IGMP snooping on a specific VLAN, use the ip igmp snooping vlan enable command in switch configuration mode. To return to the default, use the no form of this command. IGMP snooping can be enabled only on static VLANs.
Why would you want to disable IGMP snooping?
Which router is elected the IGMP querier when more than one router is in the same LAN segment?
If there are multiple queriers (routers) on the subnet, a designated router (DR) is elected using PIM to avoid sending duplicate multicast packets. The elected querier is the router with the highest IP address.
What multicast rate should I use?
There is no set “best” number for the multicast rate, each network is different and the settings can change depending on how you use your internet wifi network. The reason is that higher multicast rate can hinder your individual internet usage by sacrificing it to boost your wifi network streaming throughput.