i have 2 router one is 7210n channel number 13, Channel width AUTO is connected wich bridge with AP Mode on same channel 5210 is bridged together speedtest menu show 20mbps ... but internet does not work while it is on bridge with ap mode.. when i set 7210 on AccessPoint Mode and 5210 in on client mode internet work wich very slow . mean when go to speedtest menu and enter 7210 adress speed show maximum 0.6mbps...... i can not find s/number .. on this time i dont have box of router i away from it ..

PC1----7210N_AP )))((( 5210G_client----PC2

You said it works so that it works...

Speedtest menu on those device is not accurate. To test the link speed, you can transfer some big files between PC1 and PC2.

What's more, you can't configure like this : 7210_bridge with AP ))) ((( 5210_bridge.

The bridge mode on these two products are not the same thing. So just use AP ))) (((( client as #4 said.