The link is working corretly, But about half an hour or random period the link go wrong. The signal strength is still 35% and the link test between the bridges is good. The device says that 100 packet attempt 100 succesful. But the ping between the devices not work. And I cannot acces the devices behind the non-root bridge. After this I have several messages in the log.
(Info): Deauthentication from [Non-rootBR-Bfured]0040965867a5, reason "Not Authenticated"
2003/03/05 15:08:49 (Info): Station [Non-rootBR-Bfured]0040965867a5 Reassociated
2003/03/05 15:08:49 (Info): Started driver for port "br10"
2003/03/05 15:08:49 (Info): Station [Non-rootBR-Bfured]0040965867a5 Authenticated