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Different IP addresses modem vs router
For some reason, my modem and router have different IP addresses, 192.168.0.1 and 192.168.1.1, respectively. I have a printer connected by ethernet that connects to the modem. my 2 computers and other devices are connected to the router. one of my computers (mac) finds and connects with the printer whereas the other (windows PC) one does not. I assume the problem connecting the windows PC to the printer is due to the printer connecting directly to the modem IP (although, i don't understand why the mac seems to connect without problem). How can i get them all to work together on the same network? Do i manually reassign an IP address of the router somehow? or can i tell the printer to connect to the router IP address? Thanks for any help
That diagram is fantastic!
Dominator1 wrote:
I also realize that i might need to relocate the orbi router to the basement next to the IPS modem and connect directly from that to the various satellites?
Yes, move the basement satellite upstairs, connect the router directly to the ISP device, and then everything in the house connects to the router LAN ports. If there are not enough open ports, an inexpensive gigabit Ethernet switch in the basement will provide more connections.
11 Replies
What modem do you have? I"m betting its a modem/router combo device if that's its IP address.
It causes a double nat and the issue you're running into.
A double nat happens when you cascade more than 1 router.
https://kb.netgear.com/30186/What-is-Double-NAT
Fixes? There’s 3 options but only use 1.
1. Put the modem/gateway in modem only/pass through mode. This disables its routing functions.
2. Leave the modem/gateway in router mode but put the Netgears IP address into its DMZ. This forwards the data to the netgear. You can either leave the modem/gateway’s wireless enabled or disabled. Just make sure its using a different wifi channel to prevent interference
3. Put the Netgear into access point mode. This disables its routing functions. Wifi/ethernet still works but it does disable some features.
https://kb.netgear.com/26765/Which-features-are-disabled-on-my-NETGEAR-router-when-it-is-set-to-AP-Mode
Dominator1 wrote:
I have a printer connected by ethernet that connects to the modem. my 2 computers and other devices are connected to the router. one of my computers (mac) finds and connects with the printer whereas the other (windows PC) one does not.
This is the way it is supposed to work. Move the printer cable from the ISP modem to the Orbi router and everything will work.
Every router is designed to belong to one IP network through the WAN port and to create its own IP network on the LAN side. In an ideal world, the WAN side is "the internet" and the LAN side is "everything in the house". With every device on the same network (called an IP subnet), every device can communicate with every other device without having to pass through the router. They all communicate with "outside" by going through the router, which uses a technique called Network Address Translation (NAT) to make it appear that everything is coming from one IP address (the router).
Having two routers can create problems for specific applications (not for every application). Internet search for "Double NAT" will provide examples of the sorts of applications that struggle with that situation, such as
- Sharing files on the internet
- Certain types of internet gaming (not all gaming)
- Accessing the local LAN from the internet
As plemans described, there are several methods to handle a Double NAT. Only one of those will work with the printer connected to the ISP modem. I would just move the cable and be done with it.
many thanks to plemans and crimpon. both responses make perfect sense and i understand much better now.
there's one minor complication due to the fact that the printer is in a different room and on a different floor from the router so I can’t connect the printer cable to the router via ethernet cable. There are ethernet cables running through the house (inside the walls) connected directly from the ISP modem the basement. i have now connected the printer to the router via wifi which seems to work fine and i think is consistent with what pleman and crimpon explained.
my remaining question going forward relates to rooms where the wifi coverage is weak or inconsistent and i prefer to connect a device(s) via ethernet. i assume that if i have turned the ips modem/gateway router function to pass through only mode, that all the ethernet connections in the house will connect to the netgear router so it won't matter if devices are connected via ethernet or wifi?
thanks again - dom
(Assumptions.... got me again!)
Of course, the ISP device is located at the house wiring panel in the basement, which is a horrible place to put a WiFi access point. (few devices - if any - and all that building material impedes WiFi transmission to the main part of the house.)
And, there is only one Ethernet connection from the wiring panel to the Orbi router location.
If there were two cables between ISP and Orbi, one cable could carry the WAN connection between ISP and Orbi and the other cable could be used to support an Ethernet switch (in the basement) which could bundle Ethernet connections from all over the house back to the router. A $30 switch would solve everything.
The issue with putting the ISP device into pass through mode is that the Orbi router will expect everything to be connected to it over WiFi or through the Orbi LAN ports. Devices connected to the ISP device will simply disappear.
If eliminating Double NAT or using the in-house wiring is a serious concern, there is a solution that requires two smart switches and some effort.
FYI, if you need the RBS to be ethernet connected, the need to be connected behind the RBR or if a LAN switch in in the mix, RBR>LAN Switch<RBS:
