All things related to multicast

[Jon Zeeff <>]

Yes, there is a fundamental incompatibility between tcp's "use all 
bandwidth, packet loss is a normal signaling mechanism" and "packet loss 
has very bad
effects on video conferencing".  QOS helps.



> I would add that the extent the network is otherwise well designed, when a
> user pulls down a 1G file and the network attempts to use all the bandwidth
> to allow it, real time services must suffer.  I would argue this is where
> QoS comes in.  There is nothing more unequal than the equal treatment of
> unequal things.