EoIp Tunnel problem

Hi all,
I have small problem about EoIP tunnels, I changed my bridged network to routed one. I set up ospf and remove the bridges betwen devices. everything was ok but now my EoIP tunnels strart to not working. I carry my pppoe connections to pppoe_server over EoIP tunnels. there were no problem when network was bridged network. but now EoIP tunnels on AP’s suddenly stop. and I remove them from AP side and PPPoE_server side then re create them and enable keep alive option to work them again. I try to upgrade AP’s and PPPoE_server to v6.41 but same.
what can it be the problem ? when eoip’s not work I can ping AP from pppoe_server and I can ping pppoe_server from AP.

Thanks

any idea ?

up..

Does the log say anything while the EoIP tunnels are down?

no, eoip down but i can ping routers from A router to B router and B router to A router.