Routers losing connection

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bokistoj

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Sep 20, 2017
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Hello everyone, I am sorry if similar thread was here in the past buy I am having a lot of issues with my routers.

So, I hope you will understand. :)

I have fiber-optic connection, and I got from my ISP just their media converter and that is it. Ok now, i got that. But there is a thing. I have two different routers and the same problem. Once in a while router looses connection with media converter somehow. I do a fast turn off and on (router) and it works again. It is the same with both of my routers.

What seems to be the problem, anyone with a solution maybe?

 
Solution
Ralston18
How is the backup router configured?

I would expect the backup to be identically configured with the main router.

Which means that the backup router must be offline when the main router is in service. Otherwise devices could be receiving duplicate IPs as one router does not know what the other router is doing. And then there is double NAT...

And if the backup router is configured correctly some devices may be floundering around looking for a DHCP IP address and/or if a Static IP may be encountering a duplicate IP be it DHCP or Static.

Reference for more info:

https://www.pcworld.com/article/3175739/network-router/how-to-identify-and-resolve-double-nat-problems.html

Take another look at your network structure: especially the...
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Ralston18

Ralston18

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Oct 11, 2014
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How are your routers connected? What IP addresses do they have (e.g., 192.168.1.1, 192.168.1.2)?

The routers cannot have the same IP address and only one router should be assigning DHCP IP addresses.

So set up the main router to provide IP addresses via DHCP. Assign the second router a static IP that is reserved for it on the main router via the second router's MAC. The static IP should be outside of the available DHCP IP address range allotted to the main router. Be sure that DHCP is disabled on the second router.

Example:

ISP ----->[WAN Port] Main router (192.168.1.1) [LAN port]<------ Ethernet cable ------->[LAN port] Second router (192.168.1.2) [LAN ports] ---> Ethernet cables/wireless to network devices.

Other Main router ports may be connected to network devices as well.

Figure out the existing IP address assignments. Refer to the applicable router User Guides/Manuals for the default IP addresses and how to change those IP addresses to avoid duplication.
 
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bokistoj

Prominent
Sep 20, 2017
3
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510


Thank you for the answer. I think I didn't explain well what is going on unfortunately.

So, I am using just one router. Other one is for backup.

So, thing is that i establish a connection and it works well for few hours and then connection just drops for a few minutes. Thing is, if I switch routers right away I will have my connection again and so it goes..

We rulled out the ISP problem so the problem has to be in my routers?
 
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Ralston18

Ralston18

Titan
Moderator
Oct 11, 2014
34,894
3,323
146,290
How is the backup router configured?

I would expect the backup to be identically configured with the main router.

Which means that the backup router must be offline when the main router is in service. Otherwise devices could be receiving duplicate IPs as one router does not know what the other router is doing. And then there is double NAT...

And if the backup router is configured correctly some devices may be floundering around looking for a DHCP IP address and/or if a Static IP may be encountering a duplicate IP be it DHCP or Static.

Reference for more info:

https://www.pcworld.com/article/3175739/network-router/how-to-identify-and-resolve-double-nat-problems.html

Take another look at your network structure: especially the routers and their respective configurations.


 
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