Mikrotik RB5009

Setup LAN

1. create new Bridge and add all ifaces except Ethernet1 (WAN) - or add to default "Bridge" 

2. click Ports tab and add ifaces to the new bridge

3. give the Bridge a new IP (Menu > IP > Addresses > New, add new subnet and IP
   
   ie
   Address = 192.168.81.1/24
   Network = 192.168.81.0

4.