There is such problem - cards Senao 2511cd + on chip PRISM are established in a computer with MikroTik 2.8.15, they incorporate to bridges of the same manufacturer. Periodically with an interval 5-29 sek. connection between cards and bridges vanishes. Productivity of a radio channel because of it awful to load through a radio channel a file it is more 50 mbyte it is impossible. What to do ?
Could you tell me more detailed about this problem, becuase I just tested it and it is working? Make the support output file form the router when you get this disconnect and send it to support@mikrotik.com
What configuration you have on your bridge and what model it is?