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I have a printer connected to my server by Ethernet. The server otherwise uses WiFi for LAN/internet.
The printer's subnet is on 192.168.2.x (fixed IPs); the LAN is on 192.168.1.x (DHCP from the router).
How can I bridge the two subnets, so that the printer can get to the router?
I am guessing you have an Airport that you connected to your ISP's router. This is producing a double NAT. If this is the case, simple change your Airport from Router mode to Bridge mode. This will turn off the DHCP service on the Airport and allow it to bridge the primary network. All devices will be on the same subnet.
Reid
Apple Consultants Network
Author "Yosemite Server – Foundation Services" :: Exclusively available in Apple's iBooks Store
Author "Mavericks Server – Foundation Services" :: Exclusively available in Apple's iBooks Store
Author "Mavericks Server – Control and Collaboration" :: Exclusively available in Apple's iBooks Store
No, I don't have an Airport Extreme/Express or similar.
The printer is attached directly to the Server Mini by Ethernet. The Mini connects to the LAN via WiFi. The router is in another room (where the phone socket is), and it's impractical to have the printer there.
I have read that I need to use the "route -n add" command. Would this work?
route -n add 192.168.2.1 192.168.1.72
Or should I use the Server's DNS?
Should be relatively straight-forward:
This should do the trick, so that the printer can access the internet. However, you have to test if you can access the printer from the server (haven't done that), but should be possible via Bonjour.
LL
Any chance you can run a patch cable to where the printer is? I am concerned with the impermanence of the solution. Relying on the host device to "share" the printer means that the host can never sleep or be shutdown. If the host machine is off or sleeping, no one can print. Directly connecting the printer to your network is the most reliable method.
Or even install two power network adapters which let you network via your electrical wires. You don't need gigabit speed for printing.
How to join two subnets?
