Add additional router

I'm thinking of adding an additional router to my cable router for my Hubitat hub. This add on has 300Mpbs speed.
Does anyone foresee any problems? If not how do I switch the IP address and does it have to be static?

GL.iNet GL-MT300N-V2(Mango) Portable Mini Travel Wireless Pocket VPN Router - WiFi Router/Access Point/Extender/WDS | OpenWrt | 2 x Ethernet Ports | OpenVPN/Wireguard VPN | USB 2.0 Port | 128MB RAM

What is your use for the additional router? If you just need additional ports so you can plug in your Hubitat hub, a network switch is the easiest option.


As @bertabcd1234 said, it depends what you're trying to accomplish. It's hard to tell from the OP.

Adding a second router (as opposed to a switch or wireless access point) into your home network could potentially cause problems and it's best to avoid that unless you have a specific use case in mind and a good working knowledge of IP networks.


I'm having trouble with my cable router. I can login but can't access my lan client list. So I thought I'd put the hub on a another router and use a static IP so if this one gets replaced it still setup. Just have to plug it in. But thinking it over, six of one half a dozen of the other. Does the hub require a static IP?

It’s one of those “no, but most people probably recommend it”.

Static IP has a specific meaning when it comes to configuring IP networks, and for the purpose of this conversation it's probably not worth going into too much detail about.

The hub doesn't require a static IP address unless a specific user's LAN is configured in such a way as to require that, and those users know who they are.

But it can benefit from having an IP address that doesn't change. For most of us with networks at home, IP addresses are assigned by a DHCP server, which happens to exist within the router (although it doesn't absolutely have to). So most of us use DHCP reservations to give the hub an IP address that doesn't change.

It doesn't sound like you can accomplish what you're hoping to by purchasing that router, although I'm still not 100% sure I follow what you're planning to do with the router provided by your cable company.

You intend to get the cable company router replaced with a new one that they provide?

If you're thinking of buying your own router, have you considered taking the cable company-provided router out of the mix entirely?


I now have the hub on a static IP. It seems the cable company routers last about 15 months. This is the 4th one. I have a backup file to upload to a new cable router. Tell you the truth I'm not sure what I'm thinking. I should just get the cable company to replace it.
I have a lot going on and don't seem to be thinking clearly.
Thanks for your help!

If you have a separate cable modem, in addition to the router, then consider doing away with the router entirely.

If it's a combined modem/router, also known as a gateway, you're probably pretty much stuck with it.

FWIW, I'm going to guess that you do not have a static IP address assigned to your hub, but rather a DHCP reservation. As I mentioned, "static IP" does not actually mean, "the device's IP address doesn't change." Even though that's, in general, what the word "static" implies.

Here's a brief explanation of how static IPs and DHCP reservations differ:

Yes I assigned it a static IP. That's easy to accomplish.

I take it back, you may have used the hub's settings page to set a static IP address.

However what you should do to avoid possible problems is to set a DHCP reservation from your router's settings interface.


No, I login to my cable modem and set the IP under the client list.

OK, then consider reading the linked article I just posted to understand the difference between static IP addresses and DHCP reservations.

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Thanks for the info :blush:

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FYI, unless very specifically setup, 2 routers on the same LAN segment can create IP conflicts, which will give you large headaches, especially if you have kids in the home. If one router is setup as an access point, that's fine. There's too much to go into here, but lots of videos on youtube about the background and very good explanations of how routers work.

I have cable Internet, but I own my own cable modem and router in separate devices. Router technology upgrades occur much more rapidly than cable modem upgrades. Thus, I can upgrade my router without having to replace my modem.

You can only have ONE router assigning IP addresses in a given system. If you have a combined modem/router, that will have to be the device to assign the IP addresses since it is connected as the Internet gateway. However, you can connect a second router to the primary one using an Ethernet cable as long as the second router is configured as an access point that does not attempt to assign IP addresses to clients. I have a Wifi 6 (AX) router on my main floor that is the primary router. I have an older WiFI 5 (AC) router on my upper floor that used to be my primary router. Now it is configured as an access point. The WiFi 6 router assigns IP addresses for the entire system. However, I could just as easily swap the two devices and use the AC router to assign IP addresses and use the AX router as an access point.

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Why not just replace the current router with a stronger, better, not provided by your ISP router? I use an Asus RT-AX3000 , it's been very reliable, have never had a single problem since I installed it.

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Thanks I'll take a look at it.

I'd be surprised if you could not put the gateway into bridge mode and bypass the router component.


While I don't think it's been mentioned, if you put another router on, you'll be double natting anything behind it. I will agree most cable company routers just suck in general, and I would advocate for someone to get a better one, please be aware you would want to have your cable company switch their hardware into passthrough/bridge mode so it is only just a modem and your equipment is actually the gateway with a public ip on the want side and a private ip on the lan side. Doing this would also shut down the wifi in the cable modem (which you want) and your DHCP setting would also be on the new router. Again, personally I find this desirable. Personally I use a Watchguard T35 as my router, Vlan's, DHCP, Firewall Rules, etc are all done from there. Then various switches plug into that and everything on the network is plugged into the switches.


That might not be an issue if you own the device. If it is a cable company owned device, you might not have full administrative privileges to place it in bridge mode. However, It does not really matter which router is assigning IP addresses as long as they both are not trying to do so.

I do realize that you can have multiple routers assigning IP addresses as long as they do not conflict on the same address segment. My primary LAN assigns addresses in the 192.168.1.XXX range, but I also have a POE NVR that is on the LAN, but that assigns addresses to the video cameras on the segment.