I have an MacBook Pro using OS Sierra version 10.12.5 (along with our iPhones & iPad) wirelessly connected to the Arris 6900 Modem-Router and wirelessly connected to our Brother printer. The problem is being able to print to the Brother printer on an every day basis. I can print from any device one minute, wait an hour or two and can't print. What is the problem with the connectivity issues to the printer. I've checked with our Cox internet provider, help people at Brother, and with the people at Arris. No one has a solution that works. I hate to buy a new modem-router but is that my only choice with this Arris product.
Printing Connectivity with the Modem
Networkprintingwifi
Best Answer
You haven't specified your Brother printer, but there is a known issue that affects how some of Brother's printers communicate with macOS systems. When I say it's a known issue, you'll be hard pressed to find it documented in writing, although you will have this confirmed if you get the right Brother support person on the phone.
There are some workarounds you can try, but these are not guaranteed to work 100% of the time. The only option I've found that will work 100% of the time (based on my experience with a limited number of networks using Brother printers), is to disable IGMP snooping. However, if your modem/router does not provide configuration settings for IGMP, then you'll have to purchase one that does.
So, your options are:
If you still get no joy, then your best bet (assuming you want to keep using the Brother printer) is to purchase a modem/router that supports IGMP and ensure you disable IGMP snooping.
Regardless of what you opt for, I strongly suggest you actually reset the printing system on your MBP before trying each of the above options. To do this:
Remember: Make sure when you add the printer back that you use the CUPS option and not the AirPrint option. (Don't worry, you should still be able to print to your Brother printer from your iPhone and iPad).
1Not to be confused with your Mac computer. See MAC address for more info. You can obtain your printer's MAC address from its configuration menu.