Hi, we are using a CCR1036 RouterOS 6.6 as a PPPoE concentrator with simple queues for shaping. In the evening the number of online PPPoE connections reaches 1500. I started to notice that in the evening when the number of online PPPoE sessions exceeds 1000, clients' throughput starts to degrade. Total throughput stays at 400-500 Mbit/s. CPU load does not exceed 20-30% but the CCR cannot go beyond 400-500 mbit/s.
Today I upgraded to 6.9 but I doubt it will make any difference. Has anyone experienced the same problem? What can be done apart from installing a second PPPoE concentrator and load balancing between them.