Does anyone know how many port CPU interfaces are in the RB1100AH and how they are wired?

I know that ports 1-5 and 6-10 are in switch groups, so that implies a single interface from each group to the CPU, but what about ports 11-13?

Are there 5 CPU interfaces such that traffic from switched ports {1-5}, switched ports {6-10}, port 11, port 12 and port 13 travel on separate CPU interfaces?

ether11 is connected to the CPU