Ubiquiti UniFi Switch - IGMP, IGMP snooping, and IGMP querier

[@sanpietroprogettista9887]

Great Video, the problems with UniFi Multicast just get deeper as you explore a real installation. I run a network with 600+ IPTV devices and every time we drop a new location we give UniFi a shot. While single channel streaming works fine now if you have a group of TVs on a switch you get a glitch whenever you have channel changes. The fast leave settings leave much to be desired and the lack of PIM really creates a challenge.

[@TylerDola]

Is that why my ISP's IPTV boxes freeze up when I try and have more than one on? I plug one in and enable IGMP Snooping and IPTV Support (which I think is an IGMP proxy), and it works long term. But if I have another one, they seem to freeze randomly. Maybe its on channel changes on one box...

[@sanpietroprogettista9887]

@@TylerDola yep, that’s fast leave and igmp v3

[@samborton6613]

Great video, thank you for explaining things and exploring all of this so thoroughly!

[@zajjj]

Awesome video! Great job at explaining everything. Thank youk

[@proxgs7703]

For UDM-Pro, i don't know for sure if Unifi OS is based on VyOS like EdgeOS, which runs on their EdgeRouter line, or not but maybe you can try to run the command "show bridge mdb" to see if you can list the multicast database. would be the name of the bridge you use. You can list all bridges on your system by running the command "ip link show type bridge"

[@caritechsolutions9382]

I'm guessing you need to set the vlan querier adresses of each switch which is different from the management Ip of the switch, in the edge switch it under "IGMP Snooping Querier Configuration" . That sets the address used to choose the igmp querier. It looks like currently all the switches in your demo default to 0.0.0.0. Hope that helps

[@adriankomadowski]

I know that I already gave you many video ideas, but there is another one. As you have said in this video the information for IGMP Snooping is quite limited in Network application so maybe a video explaining all unifi settings would be a good idea since a lot settings are poorly explained or not explained at all.

[@hz777]

I think this video is exactly for the purpose. except for the ones mentioned in the video, I am not aware of anything else you can do to change the settings.

[@adriankomadowski]

@@hz777 that's not what I meant. I mean a video with explanation of all unifi settings in GUI which are labeled vaguely or not labeled at all.

[@hz777]

Oh, yes that's what I have been doing, but my plan has been one setting per video. Thanks to Ubiquiti, there are too many such settings to cover in one single video :D

[@adriankomadowski]

@@hz777 ah I see, so I misundertood you there. I was originally thinking about an all in one video but I see your point in 1 settings 1 video approach since you are going really deep into rabbit hole in every one of them.

[@Thatguy-bo3vr]

@hz77 did you mention not to run Multicast on default network/vlan1? My setup drops frames when trying to Multicast, any ideas? (Birddog encoder to Birddog decoder: is fine... But Tricaster encoder to Birddog: drops frames)

[@tibcheshire]

Hello Sir, A big thank for your video, you saved my installation 😊, 4 switchs,a IPTV server connected to a switch, tv's connected to this swicth working well but other's TV connectet to other switch not working, DHCP and ip was ok but not the flux, the querier wasn't in the good switch and after set it up manually it's work well 😊 but we're ok that if I reboot the switchs, I need to add this command again? once again thank you, unifi support doesn't found the solution... 😊

[@hz777]

The config done using CLI won't persist, so won't survive switch reboot.

[@tibcheshire]

@@hz777 yes I talked to the support, he made a ticket for asking an implementation of this function on the interface, but not sure if will be available one day, we'll see, thanks again

[@tibcheshire]

@@hz777 Question you know how to set the querier on a U6 IW ? telnet localhost and `cli doesn't wotk, thanks :)

[@hz777]

I don't think the AP has a similar CLI.

[@zizouth]

Hello Great Video. I have probleme in IpTV in unifi Network for a hotel with 50 Tv+. seems multicast do not cross US-16XG switch. do you provide freelance support to check with me?

[@t-lm]

is there any affordable managed switch (layer 3, VLAN, IGMP snooping, 16 or 24 ports, 8 poe POE and FANLESS ) ? If you read reddit they say the non-pro Ubiquiti switches are bad for IGMP but the pro or enterprise ones extremely overpriced. Do you know any Chinese ones? Dropping 1000 dollar for a IGMP capable Ubiquiti switch is no go for 90% of IT people. TL-SG3428XMP seems to be a good one from price / capability point of view

[@hz777]

USW-Pro-24's price is $400. I am not aware of cheaper ones from Ubiquiti that meet your criteria. BTW USW-Pro-24 may have fans inside but I cannot hear anything. Regarding other brands, I also like MiroTik switches: they are affordable and powerful.

[@capnjackswallows2888]

When you set the querier to .1.7 (later in the video) you didnt do a reboot, can manually set querier survive a reboot? Cuz at the begining of the video you did a reboot and the querier was chosen dynamicaly.

[@hz777]

No, the manual setting of query won't survive reboot.

[@capnjackswallows2888]

@@hz777 thx man, and keep doing your videos, you do a very good job, and very good explanations :*

[@dystination7688]

Does there settings survive a Reboot?

[@hz777]

Nope.

[@dystination7688]

Is there a solution that is reboot safe?

[@hz777]

As long as it's not on UI, there is no official way. However, because they are CLI, one can always automatically trigger scripts after reboot, by using custom ways. However there is no reliable supported approach.

[@VangrudenbergOlivier]

Many Thanks for this video i'm trying to change my IGMP Querier IP with this command line but i thinks Ubiquiti already change the command line in the new firmware version. If you can provide me the new command line to do that it can save life and loooot of time. Did you thing you can help me? I can paid for that 🙂

[@hz777]

I just tried with my switch, which is on latest firmware. I can still use those commands. Did you try on a pro switch? non-pro ones do not support the same command interface. BTW, there is a "Thanks" button under the video if you want to pay some $ :)

[@Thatguy-bo3vr]

Wow, so this guy is trying to Multicast across switches and vlans... Meanwhile my Multicast drops frames in same switch/network 😢