The default DHCP range is 192.168.1.2 to 192.168.1.254. I seem unable to modify this to be able to use 192.168.xx.yy or 172.16.xx.yy. Is this just me or is this a limitation on the Orbi and if so when will Netgear provide this capability.

I can't really experiment right now, but have you tried changing the subnet mask and then applying the changes? I have the first three octets of the DHCP pool grayed out, and I tried changing the subnet mask to see if the third octet would become editable (it didn't), but I didn't want to apply the changes and disrupt connections. It's possible the DHCP pool is derived from the router's IP address and subnet mask that have been applied, so by changing the IP and/or subnet mask, the portion of the DHCP pool addresses that can be edited will change as appropriate. Though, I just tested changing the IP address, and the DHCP pool addresses changed immediately, without applying, as soon as I moved the cursor out of the changed octet's field, so maybe not. It might just be lazy programming on their part (maybe even just on the GUI, and the router itself is actualy capable of handling it), and they just assume home users won't need more than 254 IP addresses, so they have it set to copy the first three octets from the IP address to the DHCP pool, regardless of subnet mask. It's possible you can successfully use /23, etc. if you do it from the command line. At least from the web GUI, it seems the third octet in the Orbi's IP address will define the third octet in the DHCP pool. As for your ISP router allowing 172.16.0.64 - 172.16.255.254, that's a function of the router (and, perhaps, the provisioning by the ISP if it's a modem/router combo unit), but not anything the ISP would be able to restrict on your Orbi. If you had a commercial-grade router, you could use 10.0.0.0 as your network, and your ISP would not know, care, or be able to prevent it.

With smart home devices that connect to WiFi it is becoming increasingly possible to have over 200 devices on your network. This is going to become even more of an issue as time goes on and the number of smart devices grows.

What browser are you using? Does using a different browser have any difference? Is there a reason why you need 172? Ive been able to set 192.168.0.100 thru .200 on mine... Possible NG may have set limitations on what class of IP address is supported on them...

Thx for your examples. 172.16.xx.yy was just an example as I tried that as well for completeness, I would probably stick with 192.168.xx.yy. I was using Chrome browser and my Orbi is configured as a router interfacing to a BT modem. My BT HomeHub 5 offers a DHCP Network Range of, for example, 172.16.0.64 - 172.16.255.254 (which was partly why I tried using 172.16.xx.yy) so it is not an ISP limitation. I notice that you were able to set 192.168.0.100 thru .200 but have you managed to change the third field/octet i.e. 192.168.10.100 or 192.168.20.100 so that theaddrtess range would be, for example, 192.168.0.100 to 192.168.10.200?

Well for one you can't use a router on the same IP address and subnet like that. If your modem already has a built in router and uses 172, then the only 172 address that the Orbi can use is on it's WAN port. The LAN side would need to be 172.17.xx.yy. This should work on the LAN side of the Orbi. And no you can't use 192.168.0.100 to 192.168.10.200 as a LAN side IP address range. Has to be .0.100 to .0.254 or .10.100 to 10.254. 3rd Octet has to be the same for begining address to ending address range. Modem Combo Units:Couple of options,1. Configure the modem for transparent bridge mode. Then use the Orbi router in router mode. You'll need to contact the ISP for help and information in regards to the modem being bridged correctly.2. If you can't bridge the modem, disable ALL wifi radios on the modem, configure the modems DMZ for the IP address the Orbi router gets from the modem. Then you can use the Orbi router in Router mode.3. Or disable all wifi radios on the modem and connect the Orbi router to the modem, LAN to LAN and configure AP mode on the Orbi router

Orbi IP Address Range | NETGEAR Communities

19 Replies

FURRYe38
Guru
Aug 07, 2018
What browser are you using? Does using a different browser have any difference?

Is there a reason why you need 172?

Ive been able to set 192.168.0.100 thru .200 on mine...

Possible NG may have set limitations on what class of IP address is supported on them...
- tony_ngear
  Aspirant
  Aug 07, 2018
  Thx for your examples.
  
  172.16.xx.yy was just an example as I tried that as well for completeness, I would probably stick with 192.168.xx.yy.
  
  I was using Chrome browser and my Orbi is configured as a router interfacing to a BT modem. My BT HomeHub 5 offers a DHCP Network Range of, for example, 172.16.0.64 - 172.16.255.254 (which was partly why I tried using 172.16.xx.yy) so it is not an ISP limitation.
  
  I notice that you were able to set 192.168.0.100 thru .200 but have you managed to change the third field/octet i.e. 192.168.10.100 or 192.168.20.100 so that theaddrtess range would be, for example, 192.168.0.100 to 192.168.10.200?
  - FURRYe38
    Guru
    Aug 07, 2018
    Well for one you can't use a router on the same IP address and subnet like that.
    
    If your modem already has a built in router and uses 172, then the only 172 address that the Orbi can use is on it's WAN port. The LAN side would need to be 172.17.xx.yy. This should work on the LAN side of the Orbi.
    
    And no you can't use 192.168.0.100 to 192.168.10.200 as a LAN side IP address range. Has to be .0.100 to .0.254 or .10.100 to 10.254.
    
    3rd Octet has to be the same for begining address to ending address range.
    
    Modem Combo Units:
    Couple of options,
    1. Configure the modem for transparent bridge mode. Then use the Orbi router in router mode. You'll need to contact the ISP for help and information in regards to the modem being bridged correctly.
    2. If you can't bridge the modem, disable ALL wifi radios on the modem, configure the modems DMZ for the IP address the Orbi router gets from the modem. Then you can use the Orbi router in Router mode.
    3. Or disable all wifi radios on the modem and connect the Orbi router to the modem, LAN to LAN and configure AP mode on the Orbi router
FURRYe38
Guru
Aug 11, 2018
Thats been a networking standard since the dawn of time.

I wanting to check out more IP address and subnets, look for the IPAddressCalculator online. Theres free ones on web sites and free installable programs. I would highly recommend takeing the Networking + Comptia course for general knowledge and information on howe IP addressing and subnets works. It's a good class and great knowledge to learn about, espeically with dealing with networks.
- toddrob
  Guide
  Aug 11, 2018
  I think you misunderstood. I understand subnetting, and I have set up my subnet as 192.168.0.1/23 (mask 255.255.254.0). This gives me a range of IPs on my subnet from 192.168.0.1 - 192.168.1.255. I want to be able to have the router assign IP addresses from 192.168.0.100 - 192.168.1.200, as an example, but the router is forcing the third octet to be the same for the start and end IP in the DHCP range definition. You said the range has to be that way (third octet the same for start and end), and my question is whether you know that is the definite hard rule, or if you are just saying that because the web UI has the third octet field disabled.
  - FURRYe38
    Guru
    Aug 11, 2018
    Home class routers don't support this kind of subnetting.

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Orbi IP Address Range