We have installed multiple surveillance camera at different locations, which are connected via Mikrotik 433ah on Point to Multipoint network on 5.8 Ghz
At central side we have a 2nos RB600 with 3nos 5 GHz sector antenna connected to 433ah with 3 R5H card each
For some long distance link we have some Point to Point Links working on 5GHz using Mikrotik
At client side we have RB433 with R5H card connector to 5 GHz dish antenna
At all client side we have Surveillance camera installed
Problem
When we enable multicast in the camera’s encoder the wireless link get choked, on unicast mode everything seems to work fine
The entire setup has been done in Access Point / Bridge (at Central Side) and Station WDS mode (At client side), we want to disable cleint to cleint communication to prevent unnecessary Broadcast (does client to client communications gets disabled by disabling default forward in WDS mode)
Mikrotik people… when do you think that you are going to support PGM or some multicast protocol to solve the UDP problems over Wireless?. That could be a good solution.
Read the wiki article concerning multicast and wireless. It has some useful configuration information. Multicast packets are sent using the lowest basic rate.
you are welcome to go to RFC page and read about multicast packet transmission from over wireless links.
you will notice that AP should allways send them in lowest data rate possible on the link (ag links 6MBpit, b links 1MBps) without packet retransmits. Also, you should be aware that UDP is best case for wireless links, due to wireless links are half duplex.
If stream source is behind wireless link client (station) then stream is sent as usual traffic, but without retransmissions.
If you encounter problems, adjust according yo limitations and see what you can do about wireless link to improve quality of it.
