I having a lot of problems and communication issues with the old cisco 2400. I would like use Mikrotik RB 30122 in order to replace the cisco and make bridge and NAT in one equipment. I can't configure correctly this diagram. Any help will be very appreciate. Basically I need to turn off the Cisco and make the same configuration at the Mikrotik router. One bridge with the WAN block and NAT and router with the Comcast LAN Block to my network.
Thanks in advance