[SOLVED] Stuck at Obtaining IP Address, Not able to assign an IP address to my access point

[imadarshkmr]

I have 11 router setups configured at my home as it is a multi-floor building. All my secondary routers (10 ) are configured as AP ( DHCP off and Static IP is given to each router ) which are then connected to a single Giga switch and the switch is connected to the main router. I have around 41 devices online in the network including 14 IP Cameras, 3 NVR, Smart Devices like Smart Plugs, Smart Remote, 3 Google Home Mini.

All was working very fine with no issues until from last two days I am not able to connect via any of my AP. My phone shows obtaining IP address and is stuck at it. The same with the laptop, Smart Tv's. All the devices which were even previously connected get disconnected. The problem is resolved with just a simple restart ( Not reset ) of my main router and it is resolved for another 1-3 hr and then it starts having the same problem.

The only changes to the network I made from when I started facing the problem :
1 . Added Two google home mini speaker in my network ( Total 3 speaker in my network )
2. Enabled UPnP on my main router as well as all my secondary router ( Acess Points )

I am suspecting IP Conflict but I cross-checked each device assigned IP which is separate for all 41 devices

 

[kerberos_20]

u could do small test, unplug your main routerand one of your AP routers physicaly replace as your main router and configure it with ip of your current (unplugged) main router with DHCP enabled
if connection will be stable then your main router has issues, if not then some rogue device makes ip conflict

 

[imadarshkmr]

u could do small test, unplug your main routerand one of your AP routers physicaly replace as your main router and configure it with ip of your current (unplugged) main router with DHCP enabled
if connection will be stable then your main router has issues, if not then some rogue device makes ip conflict

Hii, Thankyou for your response,
The router that I am using is provided by my internet service provider and I can only connect internet if I am using that particular router. How can I tweak my setting in the ISP provided router so that it works as only modem and then I can configure another router as a main router.
Also, how can I find if there is IP Conflict in my network, I tried using tools but either they are premium industrial tools or requires sophisticated OS settings that I cannot understand

 

[bill001g]

I would go back and check your AP and make sure they still have stuff like DHCP disabled. Turning on the UPNP feature may have activated parts of the router function. UPNP is related to NAT and only the main router does NAT. When a router is running as a AP it is very stupid all it does is convert wifi to ethernet. It has no concept of IP addresses or web sites etc. It purely converts data and at the most will look at mac addresses.

Start simple with 1 AP and the router. Slowly add AP until the problem starts again. When you have that many networking devices you really need more than the average skills to troubleshoot this.