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I need that devices from network 1 see/interact with devices on network 2, but i don't know how to do it.

lan map

1 - the modem of the contracted company is currently in bridge mode, because i don't have much access to his configurations and the company can change configurations without my authorization, so i keep it in this mode, and if is possible i like to keep it at this, but if really need i can change is mode.

2 - is not possible reorder physically the routers/modems, so the change must be logical

3 - in the end i only need access some shared folder on PC1 from PC4, and access the security camera live feed that is on NETWORK1 from a PC of NETWORK2, i can do that already in PCs/devices on NETWORK1 but not on NETWORK2

4 - i tried setting a fixed route but no success, i even change the modem back from BRIDGE to IP DHCP server to try....no success

Routers Options for static route:

ARCHER C20 BR static route

ARCHER C20 BR static route possible configuration in BR version

TL-WR641G/TL-WR642G BR static route

TL-WR641G/TL-WR642G BR static route possible configuration in BR version

Modem config:

Modem mode

Modem possible location for static route

Modem possible location for static route options

Modem port triggers config, useful?

=====EDIT

with the modem in bridge mode each router was a external/internet IP and gateway different, but still no lucky, even after i change to DHCP server with NAT and now router 1 and 2 was a fixed IP and gateway one cant see each other: actual config:

enter image description here

please help me i am trying really hard....but this just dont work....

Marcer ponts
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1 Answers1

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From your image we don't know the addresses on the network between modem and both TPLink routers when the modem is in bridge mode. You included only the screen for NAT Route mode, where modem is 192.168.0.1 and TPLinks are 192.168.0.2 and 192.168.0.3. In bridge mode probably both TPLinks acquire completely different addresses from your provider's IP address pool.

However, regardless of what the addresses will be, in both setups each of the TPLink routers is independently doing it's own NAT. Connecting from one network behind a NAT to another network behind another NAT through external network (and network between modem and TPLinks is exactly that in this case) is impossible directly. As suggested in one of the comments, you may try to setup VPN between the routers, but I don't know whether your TPLinks support it. And also for this case it seems like an overkill for me. VPNs are meant to use with geographically separated locations that can't be connected directly.

I see two (or even three) options for you:

  1. Set your modem to NAT Route mode, not bridge mode, and use TPLinks not as routers, but as switches. I guess they have multiple ports on the LAN side? So turn off the DHCP server on TPLink so that the modem is only one DHCP server in your network, and plug the cable coming from the modem into LAN side of the TPLink, and not into WAN side. All the devices on wired connections will get their IP addresses from the modem and in fact they will be on a single network 192.168.0.0/255.255.255.0. However, I don't know if wireless connection will work in this setup. That depends on the specifics of the router.

  2. If this is possible, turn off NAT in both TPLinks. Set your modem to NAT Route mode as in solution 1. The static routes you tried to add on your TPLinks should be working now.

  3. Buy another router to interconnect the two networks. This router must allow to turn off the NAT functionality. Turn NAT and DHCP on the new router off, plug one side of the new router into LAN side of one TPLink, other side of the new router into LAN side of the other TPLink, and set the IP addresses on both sides like for example 192.168.2.20 and 192.168.8.20 (I suppose from your picture that your TPLinks are dynamically assigning addresses starting from 100, so there will be no conflict). Add on WR a static route to 192.168.8.0/255.255.255.0 via 192.168.2.20 and on Archer to 192.168.2.0/255.255.255.0 via 192.168.8.20. There is a small chance that adding these routes on routers will not work and you have instead to add them on all individual devices in both networks.

Hope this helps.

raj
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