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Deele
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Access WiFi devices from another router LAN - same LAN with other connected ETH and WiFi routers

Sun Nov 13, 2022 7:29 pm

Home network, two router devices, one ethernet-only router (RB3011UiAS), second one WiFi + ethernet router (hAP ac lite). Fairly common and basic setup - all LANs connected.

Important connections
  • Gigabit Optical Internet <-> (ether1) Main Router #1
  • (ether2) Main Router #1 <-> (ether1) WiFi Router #2
  • (ether3) Main Router #1 <-> (ether1) PC #4
  • (wlan1) WiFi Router #2 <-> (wlan1) Printer #5
Made a drawing, to be more clear:
  • Red circles - static addresses
  • Green bg circles - DHCP assigned addresses
  • Interfaces are written for associated router
explorer_504rBMf1ak.png
How to configure so that when I attach my computer to (ether3) Main Router #1 I could access printer connected to (wlan1) WiFi Router #2 with address, provided by DHCP server configured in router #1?

WiFi router configuration is currently intalled with built-in "Home AP Dual" mode and works well but only for internet access. For sake of simplicity, let's imagine this is brand new setup with no previous configuration.

Currently, WiFi router is configured in "Home AP Dual" mode with its own DHCP server in different IP range than main router LAN, but still, I can't access devices. Please help.

I found viewtopic.php?t=182534#p907650 answer, but I did not understood what is meant by "DHCP server should be on the bridge". Where should be a bridge, in LAN router or WiFi router?

I also found viewtopic.php?t=190846#p967349, and it seems to have similar solution. So, does that mean inside WiFi router I have to move ether1 from WAN list to LAN list and it will solve problem? I trust both LANs, of course.

Main router #1 configuration
explorer_1iWfn7eLLo.png
Local Network
  • IP Address: 192.168.8.1
  • Netmask: 255.255.255.0 (/24)
  • DHCP server range: 102.168.8.200 - 192.168.8.255
WiFi Router #2 configuration

Internet
  • IP Address: 192.168.8.2
  • Netmask: 255.255.255.0 (/24)
  • Disabled Firewall Router (?)
Local Network
  • IP Address: 192.168.88.1
  • Netmask: 255.255.255.0 (/24)
  • Disabled DHCP server (?)
  • What else ???
PS: I use WebFig/WinBox, if it is simpler for you to explain with CLI commands, please, go ahead.

Questions:
  1. How to enable connections from LAN #1 to LAN #2 devices and other way around?
  2. How to use same IP range for both LAN #1 and LAN #2 devices using DHCP? Is it wise decision to use same IP range for small office environment? I chose single range, just because there are less than 255 devices in this office.
  3. When VPN inside Main Router #1 is created, and I connect to this LAN #1 network from remote computer, will answer to question 1. enable access to LAN #2 devices from remote computer connected via VPN?
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anav
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Re: Access WiFi devices from another router LAN - same LAN with other connected ETH and WiFi routers

Mon Nov 14, 2022 5:22 pm

Do you want the same subnet throughout the network, or do you want
a. trusted subnet
b. guest subnet (ususally wifi only)
c. IOT devices
d. media devices
etcc........
 
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Deele
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Re: Access WiFi devices from another router LAN - same LAN with other connected ETH and WiFi routers

Tue Nov 15, 2022 12:28 am

Same subnet is fine, it was planned to contain iot and media devices too, one network to rule them all. As I am controlling IOT devices via phone on the same wifi as devices.
Do you want the same subnet throughout the network, or do you want
a. trusted subnet
b. guest subnet (ususally wifi only)
c. IOT devices
d. media devices
etcc........
 
Sob
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Re: Access WiFi devices from another router LAN - same LAN with other connected ETH and WiFi routers

Tue Nov 15, 2022 12:53 am

If you want one common subnet for everything, then you don't want hAP as router, only as transparent bridge. It seems that you're using Quick Set, which probably has some bridge mode too, or you could simply add all interfaces as bridge ports.
 
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Deele
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Re: Access WiFi devices from another router LAN - same LAN with other connected ETH and WiFi routers

Tue Nov 15, 2022 3:21 am

Okay, fair point. I saw similar suggestions in other posts.

And yes, it is made with "Quick set".

Went to "Bridge \ Ports" section and found that "ether2", "ether3", "ether4", "ether5", "wlan1" and "wlan2" are there with "bridge" option selected as "bridge". Does that mean that they are all able to reach each other?

Clicked "Add new" and there are ton of options to select from, I changed "Multicast Router" to "Temporary Query", just like it was in "ether2".

Is that's all what's necessary?

Ping from LAN #1 PC to printer in the LAN #2 WiFi still does not respond. But I was able to reach Router #2 via WinBox and MAC address as soon as I added that port to the bridge.

PS: Now in "Quick set" it is telling me that I have selected "WISP AP" instead of "Home AP Dual" - how does it determine what current "preset" is running? It would be nice if it would tell "Custom", as soon as I have changed something outside of the "Quick set", otherwise it's confusing.

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