I have 7 mikrotik high sites, each with a sector antenna for clients, and a grid antenna connecting to the backbone. on each tower is an EoIP tunnel to my PPPoE server. the EoIP Tunnel is in a bridge along with the interface for the sector antenna.
on the PPPoE server (RB750GL) all the EoIP tunnels are in a bridge, the bridge is in a PPPoE server.
All bridges are RSTP
All EoIP Tunnels have unique MAC's in the range according to the wiki.
I started to notice clients disconnects and the whole network stops responding. I have swopped out routerbords on almost every high site, including the pppoe server. On closer inspection I noticed on the PPPoE server that the CPU hits 100% and the bridge interface would show 36-52Mbps traffic transmitted and all the EoIP tunnels would max out their respective bandwidth on the wireless. The whole system looks like its overloading. in that time all pppoe clients drop and no access from the high sites to the PPPoE server can be made, not even ping. this would last in the range of 10 seconds to 2 or 3 minutes at a time at completely random intervals. I thought it could be an IP conflict, can not find one. I have no clue left where to look or what could be wrong here.