A LAN is separated in two parts in order to avoid distances more than 100m. The LAN first part internet is provider by a fiber optic modem. The LAN second part internet is provided by a modem connected to the LAN first part (the two modems are in series, the output of the first modem is the input of the second modem). A printer is connected to the LAN first part. All the computers (windows 10) connected to the LAN first part see the printer on line but the computers (windows 10) connected to the LAN second part see the printer as off line. Is there a solution for this problem without changing the above configuration?
Disable DHCP on second modem/router and set it to Dinamic IP. Plug the input cable to second modem/router into a LAN port (the switch biult in the router/modem) not to WAN. This way the first router manage the IP's so they are in the same range and all computers should see the printer through first modem/router.
It's not to use the second modem as Switch, it's to be used as 2. Router and/or AP (Access Point). They both using just the same physical LAN Network with the same IP Range! This way the second Modem is not used, the Modem of the first one is automatically used. The user didn't see any difference. To use 2 modems at the same time on the same network, you'll need to use a Load-Balancer! A Load Balancer is a different physical Device to which the 2 Modems are connected too! To get more info about Load-Balancer and their use, just google for it!
What is your final purpouse? Do you need to have two networks in your network, one main and one secondary? Or just to extend the network? As I suggested, you'll get just one network that can see all computers and devices connected in that network as it opperates in the same range.
If the title says there is a "Network Printer problem", you should still discuss printer issues, but not how to split a LAN or how many subnets can still be installed in one main network. It seems to me that this is not a "Network Printer problem" but some other problem? Interestingly, there are more posts every day where the title doesn't match the content of the post in any way. Where does it come from or what is the cause of such a phenomenon? Is it the result of Corona or Drinking Chlorine Water? For some reason, things no longer fit into the subject. Very often the title is one but the content at all another.
It's amazing the amount of posts you make to always spit the same. The OP posted correctly his problem. If you don't understand don't comment anything. Not everyone thinks exactly like you. OP is trying his best to describe the issue, I can tell easily but you don't. What the hell EDIT by ancestor(v): insult removed
My question is clear and simple. Is it possible, the computers connected at the second part of the LAN, to see the printer as on line without changing hardware configuration?
I offered you the simple solution. You seem reluctant to move a cable from one port to another and make simple adjustments to work things simple way. If you stick to necessary have two separate networks, you should look into Cloud printing. If anyone knows a better solution, please help this guy.
For to understand what you're really talking about, it would be a good idea, you create a Diagram of what Network you have include the different Modems/Routers, computers, switches, or whatsoever is part of this Network. Important are the distances between all devices of this network. If you have MS Visio, it would be sufficient to create such a Diagram! The whole 'Game' would be much easier if the Printer in question and using, has also a WiFi Interface. In that case, you could use WiFi from any Machine to connect to the Printer and let do such work! By the way, the max using distance, without a Repeater, in CAT5e and better Lan Cables, is 300 feet which are about 100m ( exactly: 91.4m!)! There is a lot of easy ways to extend that distance! Just do your Homework (on Google)! What is really missed in your information, are simply the real details of your Hardware, etc.! Without those, it's difficult to give precise advice!