This might be a clue:
PIM Sparse Mode (PIM-SM) is a multicast routing protocol designed on the
assumption that recipients for any particular multicast group will be sparsely
distributed throughout the network. In other words, it is assumed that most
subnets in the network will not want any given multicast packet.
From: Steven Kenney via AF
Sent: Wednesday, February 23, 2022 2:32 PM
To: AnimalFarm Microwave Users Group
Cc: Steven Kenney
Subject: [AFMUG] Multicast Over Wireless
So we are delivering IPTV unicast at the moment but I do have the ability to
receive all the multicast streams. So I had been toying with the idea of
actually using Multicast over wireless.
I can get the multicast to the towers without an issue. Once it hits a
Cambium AP (either 450 or ePMP) I'm not entirely sure how I can deliver this to
my customers because the totality of the streams are in excess of 1Gbps. So
being a bit new to multicast it makes me wonder how you could get an end user
device to join a multicast stream...without a set top box.
So we use Fire Sticks, Roku, Apple TV all over the top. I don't think the app
even supports multicast yet. But I've been told it can be done, potentially at
the router.
Is this madness or is it really possible? How would a home router be able to
convert and request joins of streams and deliver it unicast to multiple devices
in the LAN?
I definitely need to read up in IGMP in detail as to its sparse and dense
modes. Right now we'd be receiving it all in dense mode.
Anyone out there actually successfully deliver multicast via Cambium at this
scale? (over 1Gbps stream data)
--
Steven Kenney
158 Erie Street. N, Leamington
[email protected] | wavedirect.net
519-737-9283
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