Problem
Bought a new Brother MFC-J475DW multi-function printer / scanner / fax but could not add it as a printer in the Print & Scan dialog in System Preferences on my Mac. When I clicked the "+" button no devices were displayed.
Confirmed that the printer was connected to the wireless network by pinging its IP address as well as browsing to it's system home page.
Facts
- Brother MFC-J475DW
- iMac OS X Lion (10.7.5)
- Asus RT-N56U Router (Firmware version:3.0.0.4.374_239)
Root Cause
Bonjour communication was not working over the wireless network.
Solution
In the Asus router settings you need to enable IGMP Snooping:
Wireless (left hand panel-->Professional (tab)-->Enable IGMP Snooping (in the middle of page)
