For high-capacity uplinks, the 48-port models include two SFP and two SFP+ ports, providing up to 10 Gbps uplinks. The EdgeSwitch Lite connects to the Ubiquiti EdgeRouter™ PRO via an SFP uplink. For wireless access, two Ubiquiti UniFi®Access Points connect to the EdgeSwitch Lite. IGMP Snooping Ubiquiti Unifi Recently I had some legacy hardware applications that required a multicast heartbeat back to clients on the same wifi network. These were specialized tools from GM that technicians used to connect to vehicles for diagnostics back to GM.
How to enable IGMP on HP Procurve
(Note Switch with the lowest IP address will be the querier by default when layer 3 switching is enabled)
Note on layer two networking from HP support rep: (I was finding the my querier was running on a random switch and not the switch with the lowest IP address)
'I’ve gone over the data and have performed some testing with the querier capability. I think a point of confusion here is what determines a querier for a network segment. The RFC for IGMP does state that a device with a lower IP address will be elected querier however the behavior described in the RFC is specific to layer 3 multicast routers which aren’t present in your environment.
In a layer 2 network segment the querier decision is made in a slightly different fashion. As described in our 5400 ‘Multicast & Routing Guide’, a device will relinquish its querier status if it hears an IGMP general query from another device on the same segment. I’ve performed various tests on different software versions and this behavior is consistent.
![Unifi Unifi](https://community.ubnt.com/ubnt/attachments/ubnt/UniFi/158258/1/iptv%20setup.png)
Unlike the majority of our units, the 5400 does have an “ip igmp querier interval ” command available from the VLAN level which does increase the time between IGMP general queries sent from the device. On the majority of our other units however there’s only the option to enable/disable querier functionality on the VLAN.'
![Igmp snooping when use unifi Igmp snooping when use unifi](https://freetime.mikeconnelly.com/wp-content/uploads/2018/01/US-24_Front.jpg)
5 Steps total
Step 1: See if IGMP is running
COMMAND: sh ip igmp config
OUTPUT:
VLAN ID VLAN NAME IGMP Enabled Forward with High Priority Querier Allowed
------- ------------ ------------ -------------------------- ---------------
1 VLAN1 Yes No Yes
2 VLAN2 No No Yes
7 VLAN7 No No Yes
Step 2: Turn ON IGMP
enter config mode
COMMAND: conf t
Enable igmp for vlan 1
COMMAND: vlan 1 ip igmp
Note to shut off IGMP:
COMMAND: no vlan 1 ip igmp
Step 3: Check status of IGMP
Depending on switch model
COMMAND: sh ip igmp 1
or
COMMAND: sh ip igmp vlan 1
OUTPUT:
Status and Counters - IP Multicast (IGMP) Status
VLAN ID : 1
VLAN Name : VLAN1
Querier Address : 10.4.1.1
Active Group Addresses Reports Queries Querier Access Port
---------------------- ------- ------- -------------------
224.0.1.55 3 2 48
232.44.44.233 27 2 48
239.255.255.250 30 2 48
Step 4: On Layer two network only (to specify which switch will be the IGMP Querier)
igmp querier is enable by default when you enable igmp on a procurve. In my case I wanted my core 5406 to be the querier on my layer 2 network so on each switch that I DID NOT want be querier I had to run these commands.
conf t
vlan 1 (vlan I am using for igmp traffic)
no ip igmp querier (disables the possibility of the querier role being held by the switch you are configuring)
ex
ex
wr mem
ex
ex
y