So here's the situation...
We just purchased this beautiful new printer: Canon IR-Adv 5235. It is on subnet 1. Some days it stops printing from subnet 2. Once it stops printing from subnet 2, the printer requires a hard reset to begin printing again (Subnet 1 is not affected). Subnet 2 is completely firewalled from WAN except for an allow all rule for this printer. I don't think it's a networking issue as there doesn't appear to be anything in the log for the router/firewall. And on top of that we have a Ricoh Aficio 1022 that is also on subnet 1 and in the 5 years of operation we have never had this problem. I can actually send the same print job to both printers, the Ricoh prints and the Canon doesn't receive the print job.
For example a co worker and I were both on Subnet 2 for the entire day. We print as we go and pick up at end of...