Multicast traffic % in enterprise network ?

Curtis, Bruce bruce.curtis at
Wed Aug 8 20:38:30 UTC 2018

On Aug 8, 2018, at 3:29 PM, nanog at<mailto:nanog at> wrote:

I believe multicast is only used for IPTV

  There is at least one company that is using multicast for video switching, or in other words to replace HDMI switchers in rooms with video sources and displays.

  They have devices that encode video from an HDMI input to a multicast stream.
And devices that receive a multicast stream and output the video from that stream to an HDMI output.

So you can have multiple cameras and a multicast stream for each camera is input into the network.
Then you can have a projector that can choose any of those multicast streams to display.

I believe the video is uncompressed

Multicast by itself does not reduce much bandwidth : that reduction is
purely based on the network design
If you place unicast nodes near your customers, multicast is effectively
unicast (just think about it) :)

On 08/08/2018 08:49 PM, Mankamana Mishra (mankamis) via NANOG wrote:
Hi Every one,
Recently we had good discussion over multicast uses in public internet. From discussion, it was pointed out uses of multicast is more with in enterprise.  Wanted to understand how much % multicast traffic present in network

 *   If there is any data which can provide what % of traffic is multicast traffic. And if multicast is removed, how much unicast traffic it would add up?
 *   Since this forum has people from deployment area, I would love to know if there is real deployment problems or its pain to deploy multicast.

These questions is to work / discussion in IETF to see what is pain points for multicast, and how can we simplify it.


Bruce Curtis                         bruce.curtis at<mailto:bruce.curtis at>
Certified NetAnalyst II                701-231-8527
North Dakota State University

More information about the NANOG mailing list