Hi all,

I have a problem with multicast traffic in point to multi point links.When a client conected to an ap demand a stream it work well, but when the second client conected to the same ap demand another stream, it make pixeled image in two clients. I don't know because can be produced.I'm grateful if someone can help me to solve it.

AP ---wireless --- client1
-----wireless --- client2

Thanks for all,

Kiket.

I have probably not explained well in the previous post, then I describe my current problem:

I have a network with two customers using multicast I want them to reach each customer channels they select. The operation of the multicast protocol is correct and when there is a single client operation is also correct, but when the second customer selects a stream to display, then freezes or pixel image in the two customers for a small period of time, and thereafter pixels appear at random in the two clients.

Here are the scheme:



If someone can explain to me how to avoid this problem, I would be very grateful.

Best regards,

Kiket.

I don't think multicast over regular 802.11 protocols works. Well it works, but the multicast packets are sent as unicast to each client. So it's not "true" multicast.

it is working but it is treated differently as any other traffic.

from AP to clients it is sent in lowest datarate without retransmits. while your stream fits in, say 6MBps for a/g, it is all ok, if both clients would watch same channel, everything would be ok, and no lost packets, but when that limit is reached, some packets will be lost, therefore pixalage.

as a solution you can set minimal datarate higher, but if by any chance some client will signal level will go beyond some bpoint it iwll be disconnected with extensive dataloss error, and that will degrade that AP, because of resends.

Hi Janisk,

I fix datarate to 24Mb and work well but I have a doubt,

as a solution you can set minimal datarate higher, but if by any chance some client will signal level will go beyond some bpoint it iwll be disconnected with extensive dataloss error, and that will degrade that AP, because of resends.

What type of resend? from client to Ap ? because multicast traffic work without retransmits. I experiment this problem with a static clients, with the same signal level all time -50db in a lab enviorment.

Kike