Brother printer doesn't seem to be getting an IP address from new xfinity gateway modem

I replaced my old router/modem with the new xfinity gateway router/modem few months ago.  I just discovered that one of my printers no longer works on any of my 4 computers.  The problem seems to be that the gateway is not sending an ip address to my printer.  The printer settings show an ip address of ‘ 0.0.0.0’  .  This printer is connected to the gateway via ethernet cable - a brand new cable.  It worked fine with my old modem.  My other printer works fine – but it is wireless.  How do I get my printer running again?