2 Routers 1 Home Network | Why Disable DHCP?
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- čas přidán 5. 08. 2020
- When you have 2 routers on 1 home network, is it really necessary to disable DHCP?
"I didn't disable DHCP on mine and it worked fine!"
Yes, it's true that it's not necessary to disable DHCP. Dynamic Host Configuration Protocol's whole purpose is to assign IP addresses to devices on your network. But if you don't disable it, you will have problems in the future.
Router 1 has a DHCP server that operates INDEPENDENTLY of Router 2, which also has its own DHCP server. They don't communicate with each other which IP addresses they are handing out.
It's possible that Router 1 can assign DIFFERENT IP addresses than Router 2. It's random.
However, it's also possible Router 1 can assign the SAME IP addresses as Router 2.
You can even plug everything in and have it working initially with no IP conflicts. But then later when you get back home from work you can be assigned a NEW IP address without even realizing it. So it's possible to have problems in the future even if you aren't adding "new" devices to your network. Your IP address is LEASED to your device from the DHCP server for a temporary amount of time. Like 1 day or 1 week. Then when that expires, it CAN be assigned the same IP address again. But it can ALSO be assigned a different IP address. This opens up the possibility for IP address conflicts days, weeks, or months down the road.
It is possible to make advanced configurations to your DHCP servers so that they are choosing different IP addresses independently so there will be no IP conflicts. But I believe in the KISS principle (Keep It Simple, Stupid). Just disable 1 of the DHCP servers. No need to make all kinds of configurations that achieve the same result as simply disabling DHCP on all but one router.
All devices that connect to the router with DHCP disabled can still obtain an IP address from the router with DHCP enabled. Basic networking concepts allow that to happen.
I hope this was clear and not more confusing. Thank you for your time and I hope I've helped you out! - Věda a technologie
You don't how happy i am to have found your channel. Thank the heaveeeeens 😌♥️
This man can explain complex topics and simplify it for the regular peeps. Thanks!! This helped me a lot
This odd my 4G modem it keeps disabling DHCP i have no External Router hooked to it my bec 6300nel Ridgewave R15 LTE modem
This man is genius in explaining complex things..appreciated
Man, you're totally one of those people who's effective in teaching... cuz a guy like me, who had no clue of this DHCP and other router terminologies etc., finally understood this sh** by only just watching this 10 min video of yours. 1 sub count from me? done.
Me at 7:21. So that's how a switch works! Believe me I learnt more about switch by watching this video rather than plenty others in youtube. Because apparantly nobody ever told me how a switch works in combination with a router. All they told was a router has DHCP where as a switch doesn't. This video gave me the complete idea. Thanks! This helped me a lot.
Finally - someone explains why the secondary router should be set up in AP mode with DHCP turned off. Thank you very much.
you can split the ip address , where no issue
Thank you so much, this is the best explanation of conflicts that I’ve received so far, was trying to figure out why my phone would just not work sometimes on Wi-Fi.
Thank you for your explanation. I used to be a network and server administrator some 20 years ago. Since then I have been doing other stuff in ICT, more business architecture orientated. I have forgot all the skills I used to have. I'm going to move the new apartment in couple of days. Because of two stairs I need to have two wifi routers and I simply didn't remember how connect them together in right way.
how come you forgot that mate?
Absolutely brilliant explanation! the best on CZcams!
Man love how you explain it for us network dummies can understand it! Lol Thanks man been having this exact problem! 😆
Yes that was very helpful as we have two routers here and we had conflicts, so hopefully when my son in law gets home from work he can disable DHCP on the secondary router, so thanks for the clarity.
A friend told me to do this, i wanted to know why.
And this is a clear video with the info!
Great explanation. I set up a google Wi-Fi nest and noticed my phone’s internet connection was always slow. Now I know why. I will disable my cable modem’s DHCP. Thanks
Short & Clear. Well done
I did a similar video and yes disable DHCP because it may or may not work and why take the chance. Its a simple one click disable tab. Its not a difficult task and its the same as disabling the UPNP which is also necessary. Good video Home Network Central. By the way I love Home Networking!!
Thanks ! Straight to the point , easy to understand ✅
What you have said is common sense. The best solution is always to keep things simple. I have a couple of routers at home. The nightmare was setting up all the routers the other ways you have mentioned: setting up the IP ranges etc. Since I saw your other movie about how to set up routers disabling DHCP and changing IPs in every one of the routers, life has become easier.
Hi great video, but not sure if I missed it in the tutorial. Whether the ethernet cored has to stay connected to each router that you add after configuring? Or can they be wifi connected to the home router? Thanks Dean.
Very clear and very simple explanation thank you for you help and instruction Keep it simple !
Excellent video. Perfectly explains which DHCP setting to use for an access point. Thanks!
another question.. can the internet provider monitor and change the configurations i made in the routers on their end?
very well explained, now let's say I have 2 routers connected but I want to use full time VPN configuration on one of them what do you think should be done with dhcp? keep both of them open because although they are on the same network , the VPN permanent one will be forwarding all his traffic through a virtual network so that they will not be ip conflicts?
That explanation was FANTASTIC! thank you brother! 👍
Thanku soo much for providing me this information.
I m not able to use the internet for 5 long hours. Now I get my solution.
Thanku soo much buddy 🥳
If you connect LAN from primary to WAN on secondary, that will create two LANs and also avoid the issue, correct? However, I believe that will prevent devices on one router from accessing those on the other since they are in different subsets, right?
Finally the right information, Thanks man !!!!
Glad to help!
Hii! Just found your channel :) questions, if I extend my WiFi to another house using cables and the same type modem router, can I have diff passwords each and will I still be required to disable DPHS? thank you in advance 😊
Omg what a great teacher you are❤️❤️❤️
I found the major issues with multiple DHCPs at different routers are the resources sharing, such as printers, NASs, they won't able to cross all the routers. IP conflict is not really a issue as you can assign different IP ranges for each router/DHCP.
You can but the issue is that most people will not do that and you will get IP conflicts.
Yes the different ip ranges for each router/ dhcp is the solution
Have one router on 192.168.1.x and the other on 192.168.0.x
I think I got that problem with my Echo Dot and my sister's Echo Dot, thanks for the video man
No problem 👍
Life saving video... huge kudos to maker...
Will there be any delay if I plug into router 2 instead of the modem/router provided by the ISP or is it negligible? I'm planning on having this setup because apparently the firewall in my ISP router does not work. I want to hide my PC behind a 2nd router with a functioning firewall.
Was supposed to go and use bridge mode for the ISP router/modem but for some reason it throttles the speed when doing that so I was looking for alternatives.
If I'm understanding this right I can do something like this for my computer:
ISP > Modem/Router (DHCP On) lan port > lan port Router 2 (DHCP On, Firewall On) lan port > Device
I just subscribed this dude is a beast explained everything in a couple minutes and he is right
Very well explained. Thanks for this
Really excellent explanation
Very easy very simple and informative
Thanks a lot for great efforts
awesome video just what i was looking for but i got questions regarding secondary router so basicaly on main router i have multiple devices connected including secondary router which has few devices connected to it , problem is i that get random disconnetions, all my devices ip’s including secondary router are within 2 to 49 dhcp range on main router than i have setup dhcp range start point from 50 to 250 to avoid conflicts and disconnection but i still get disconnected randomly so should secondary router be within 2 to 50 range on main router or from 50 to 250 range and its dhcp set from 52 to 250 thanks in advance
Thanks for this! Can you tell me if I have to take care to use similar modems? For example, we're in Australia and we have the NBN which is a broadband. Do I need the second modem to be broadband compatible? Or can I use an old ADSL modem?
If you have 2 separate internet connections coming into your home, the modem just need to work for each technology. But no they both do not need to match. You need a cable modem for the cable connection, DSL modem for the DSL connection, etc.
Thanks for the follow up video. My question is on another video I watched they kept it enabled and changed the Channels on it where it doesn’t not interfere with each other such as taking Channel off auto and putting it on 1 and the other one being on Channel 11. What is the best option ? I know you mention the KISS method but just curious if there is any benefit to doing it either way? Thanks
The channel configuration you're talking about doesn't affect the IP addresses. That will help with interference between the 2 routers WiFi signals. Even on different WiFi channels both routers will be on the same IP network. But changing the channels like that is kind of similar to the IP address DHCP server idea. You don't NEED to do that. it's possible both routers could pick different channels automatically. but it's also possible they could automatically pick the same channel. if you manually check them and find that they're interfering with each other then it might be a good idea to set their channels manually. But again the channel thing is completely separate from the DHCP server. Thanks for the question!
Hey love the video, was hoping you can help. I have two of the same ont routers from my isp. ( One was from moving to a new apartment). My main router is connected to the ont and the secondary router is connected to the main router via lan.
I only get internet access from the secondary router when the dhcp is enabled but it doesn't work well and loses internet access.
When dhcp is disabled in the secondary router I'm then unable to connect to the wifi.
is disabling the older router a better option? I have a modem/router combo that is aging badly and have been advised to get a newer router for faster speeds. I still need to modem half of the combo , so how do I run the internet through the modem (with router disabled) and then through the new router? what do I need to do to disable the router function on the old combo with the Wifi running through the second router?
What if I had my connection lan to wan? .. should I disable dhcp on router 1 or 2
On your lap top did you connect to the wire less router with a cable?
So can I assign certain items to one router and certain other items to the other router, or could I have one router do 2.4ghz and the other do 5ghz?
why this channel just appeared today :( this was detailed, now i understand now .. thank you so much ..
good day Sir, can i still use the LAN ports on router #2 to connect a cable to a desktop?
This guy is a beast he knows his shit i get calls with other ITs i explain this and they are lost, when i get calls with ITs like you i love it yall understand this my calls are done within 20 min tops, ITs that dont we will be hours on the phone and nothing i start thinking this ITs are ripping off their customers is not that hard but this guy knows his shit
but what if i want to enable DHCP in the other router with deferent network so that each routers manage it own devices
can i do that ?
any help pls
Your explanation is awesome. I like your explanation.
Can I connect the 2 wifi routers through a switch or do I have to run a lan cable directly to both?
Thank you for the explanation!
Sir you are legend for me. I was looking this from long time.
hey look, we want a lan party but it doesnt show us on the same network. yeah i didnt need youtube to explain this to people, but its finally nice to explain if your stranded in the middle of nowhere with too many computers, this is always good to know.
Hey! I hope you respond to me! Why does my VOIP avaya, i work as call center agent, doesn’t work with a static IP router? It just can’t log in. And I’m planning to buy another router and set it to DHCP but I dont think it will solve the problem
Nicely and well explained.
Liked it how he explained...!!!
If you disable the dhcp on 1 router, do you also turn off the dynamic ip address as well?
Great video, thank you so much.i just have one question (I'm still in school so I'm still learning). What happens when you disable it on both modems? (Is it even possible)
I had same kind of problem with my 2 routers. One is connected to cabe internet connection, out as WIFI(hotspot).
Other one used as wifi extender.
Now after turning the other router as wifi extender, there was no internet access. I researched a lot about it and found it got something to do with DHCP. Right after disabling DHCP of the other router, the Internet started to work. But I didn't knew what disabling DHCP means, now thanks to the video I get what was going on with those router. Thanks for the explanation.
Thank you for a great video, really good explanation.
I have a problem though, i was hoping you could point me in the right direction.
I have set up two routers like you have showed, lan to lan, and i disabled the dhcp on my primary router and have it enabled on router number 2.
But it seems like if I reconnect a device to my network it won't get internet access unless i set a static ip.
What could cause this problem?
Primary router shoud have dhcp enabled and secondary disabled.
Thanks sir today my all confusion about DHCP you cleared that thank you so much sir.
What if we add a network switch between the two routers? For example, I have two routers connected thru switch.
* My Modem is connected to Main Router.
* From my Main Router, I have a connection to Unmanaged Network Switch.
* From the Network Switch, I have connection to my Second Router.
Do I need to disable DHCP on second router? If I disable DHCP on my Second Router then I don't get internet connection thru the Second Router.
Best explaination on CZcams
Would the wired ports on the back of the main modem/router still work in bridged mode?
Hello I can't access the admin rights of the main router but I can access the admin for the second router. I think the main router has DHCP and default settings, can I do this without changing anything from the main router?
Thanks man, it helped me a lot
thanks for the perfect explanation.
What if I wanted to set up a second router out of range of the first (a very long cable to another building with lots of brick in-between)? Could I just connect them LAN -> WAN and be done with it? As one service is dropped it picks up the other? Or is the issue still present?
You will still want to set it up like in the video. The distance makes no difference.
so we shouldn’t have any problem if wireless is disabled on one and we only connect to second with wireless or wired without disabling any dhcp servers?
how about a different gateway they won't have conflicts right?
Should I disable DHCP on Verizon G3100 or on the EERO pro 6E?
Thats goooooood man i wish it and techs knew this, isp will put in passthrough or disable that but no one understands other router settings
with this setup...would the 2nd router HIDE the IP address from your ISP (Comcast)? Instead of using a VPN?
I have bridged two routers using WDS bridging and have disabled DHCP on the latter. However, often when I try to connect to the second router, my devices would be stuck at "Obtaining IP Address". Could you please help on how to resolve this? Many thanks
Thank you for the best explanation sir
Very good explanation one video with the very good information no other parts very good.
I turned off dhcp from the 2nd router and wifi works for mobile phones well. But for computers or laptops via Lan or wifi it gives me access error on the browser
" your connection is not private".. any help please
I dont understand much about this theme, i need help; My problem is the same one that is talked about in the video. I have 2 routers in the same network (One is connected with my pc, w ethernet) , and when a phone loses connection (Or joins to my network), DHCP assigns a new ip for the phone and for my computer (when i already have one), so... Basically i need to turn off DHCP of the 2 routers, or will just one suffice?
Great video! What are some symptoms of an IP address conflict in networks that have two competing DHCP servers?
You will see devices that drop their connections randomly. On some devices including Windows you will get an IP conflict message popup on your screen.
Slow speed frequent disconnection
Envision a conference room with two wifi routers with DHCP enabled on both. With two people in the conference room - connected to the Wifi lan - it might work. Now take that same conference room when the entire sales team is meeting and now you have 25-30 people with laptops and iPhones trying to connect to LAN. The IP address conflicts will escalate and it will appear as a limitation to max users - as users get bumped over the lan. But the reality is this dual DHCP IP address assignment. Then cure is to set one router as a Ap (which disables DHCP function) and then all can join harmoniously.
can i still use dynamic ip on access point rather dan static ip and turn off the dhcp settings?
Thank you for making a thorough and well explained video, I was able to fully understand how DHCP works. I have a question thought. When i disable DHCP on my second router and connect it to the network i cant seem to be able to configure it by entering its local ip address anymore. I suppose it got assigned an ip from the DHCP server on the main router?? if so how can i find the second router ip and configure it (e.g change the ssid name and password)
log into your main router and view its DHCP leases. Then look for your second router in the list and write down the IP address. From there navigate to that IP address to configure your second router.
What if you just change the starting/ending in the ip pool, so there wouldn't be a conflict?
I have two networks in my house running on two different segments with DHCP running on both routers. But I segmented my network, one for my virtual network home lab and one for my family.
thanks bro this video was super helpful
Thank you for commenting!
Your video make people understand better and clearly, can i request a video see that you a good teacher, the video i want you to make is to add unify ap the roof mounted to to the network with it's configuration and also how to access the access point remotely as i think the other guy's are skipping details
perfect explanation
It would work if i set the ranges to different pools or not? Since its probably a class C address range i could give router 1 rthe range of .1 - .125 and router 2 .126 - .253
Yes that would work
Thank you, great explanation. However I have a question about the wire connection. I connected my main router (from LAN port) to the secondary one (WAN port) the DHCP is disabled on the secondary route. (AP mode). and it works fine.
The question is there a problem with doing it this way?
thanks
In that case it doesn't matter whether you disable DHCP or not. The devices connected to the secondary router has to be managed through the secondary router. Those devices can't be managed by the primary router.
WAN creates a separate network from your router on a different gateway with a new routing table. If you want to forward ports on a device connected to a secondary router, not only you have to configure port forwarding rules in the second router but also in the primary router whereas if you connected to the lan port, you would only have to configure it in the primary router. It just creates an unnecessary indirection.
TL;DR: In the video, the secondary router is acting as a bypass. But in your case, the secondary router is the primary router for the secondary network it creates.
@@ArnabAnimeshDas thanks
Can you just plug the ethernet cable from the main router into the second router's internet port (Yellow) and not a LAN port? I have this set up without disabling the DHCP on the second router and it is working so far. Will that create issues for me, will that effect my speed? Also do you check the AP mode or Bridge mode in the router program? BTW both routers are NetGear Nighthawks 1700 (IP 192.168.1.1)and 2300 (IP 10.0.0.1). I also have a 16 port Giga NetGear switch connect to a LAN port of the main router to other ethernet connected devices. Sorry for all the questions but just trying to get it right. Thanks for your help greatly appreciated.
I have this question too. The configuration you describe works for me too, I just don't know if it is causing slowdowns or efficiency problems. This video is helpful for a situation but the use case is not clearly defined. What about the internet connection and it's own router? There is mass confusion out there among so many of us. LAN VS WAN ports, multiple routers. To add to the confusion is that for many of of us there is there is the interent "modem" itself, in my case DSL, which is usually ALSO a router with it's own DHCP server, and this is not mentioned in so many of these videos I find. Should that be disabled? Should it be the only one working? Should that modem be "bridged?" I always get the feeling the ISP is providing the lousiest possible hardware and I should be disabling everything on it except the internet access itself, and pass that on to hardware of my choice. Should there always be only one DHCP server for the entire physical location? Is there a limit to how many can be connected in serial configuration? What about in a star pattern? Seems like routers are smart enough to sense whats happening, then allocate appropriate IP addresses within their own wifi networks as needed when you hook LAN of the upstream "parent" router or DSL modem to the WAN of the downstream "child" router. I realize there are "many ways to skin a cat" but I think what most of us are looking for is a description of the best config in terms of robustness, throughput and efficiency that INCLUDES setup of the internet modem itself, a secondary home router, and then expansion configurations after that.
I have the same setup as yours. I’ve never encountered any speed issues. The issue that I’ve found is printers. I noticed that I am unable to print when I’m connected to a different network.
From my main router there is no DHCP option while the 2nd router has. I did disable the DHCP on the 2nd router and I can't connect anymore but if enabled then I can connect with my devices. Am I doing it right?
Yes. You want it enabled on your main router anyways.
Bruh, me.again. Just to let u kno, I just subscribed, your vids are informative and you solved my first issue fantastically. Would you consider doing a vid on setting up VPN client on a secondary router. Team HOME NETWORK CENTRAL!!!💥🙋🏼💥
Please help me Sir!
When power goes off primary router shuts down and when power comes in 2nd router which I had bridged need to be configured again.
Please help me out with this problem.
I need to configure all the settings again and again to bridge my 2nd router.
Hello sir, how can i control bandwidth of 2nd router, i have 100mbps speed, i want to divide 50-50 to both routers.
Nice job! I bought a new router and want to add it to my too old Verizon FiOs modem/router to get a better wi fi signal. I'll check out the disable dchp video for help. thanks again.
Useful video sir. 1 quick question - is it required to select specific channel in main router instead of auto - if yes, may I know the reason ?
No that’s not required. I leave my routers set to auto.
I have a question. Why on one the main router is slower on my second router ?
So if i disable dhcp of 2nd router, it bring same mbps? Like the main router?
I connected 3 routers together and wonder if I should disable dhcp server on 2nd and 3rd router. This video explains that I should disable dhcp for my other routers. Thanks
Great video. One additional question, i have a big house with 3 floors and i'd like to have one router in each floor how would i connect a third router? Connect it to router 2 or to router 1?
it will be better connected on the first router, since it will be the one with the dhcp on
@@TECKTECHBones the first floor signal is not strong enough for the third floor. The idea of adding additional routers is to extend or amplify the signal for the second or 3rd floor. Set the dock ranges differently on all routers with dhcp enabled. 192.68.x.1-50 on the 1st router, 192.168.x.51-100 on the 2nd router and 192.168.x.101-150 on the 3rd. Plug the 3rd router on the 1rst router. The gateway for the 2nd and 3rd routers should be the 1st router's ip address.
Great information
Thank you, solved my problem :D