NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.
Forum Discussion
Solved
Restrict DHCP?
Hello Everyone, Thanks for taking the time to read this. I've got a Netgear Orbi Mesh router with one sattelite. Everything was fine until 3 days ago when the cable modem I own was replac...
OK, first off, you don't have to be a **bleep**. You made a short answer, being "no, you can't" into this whole big long thing and have been throwing shade for most of your replies.
Second, I'm asking if this device will do something that many other devices do. Just because you don't like the question, doesn't make it the wrong one.
Third, I intentionally left off the make/model of the modem to minimize the "Have you tried doing this?" posts that I didn't want. As if I hadn't tried any of the things y'all would've said to log into the modem to try. The cable modem given to us from Altice One needs the DHCP on and the WiFi on for the DVR's to work. Period. Turning those functions off is not an option.
Lastly, I've managed to solve the issue by setting up VLANs on the Cisco switch so that the only devices getting an IP from the cable modem are the DVR devices.
You can reply if you like, but I'm done with this post, and most likely the community as well.
Good day.
You can put your netgear in AP (access point) mode.
What modem is it? Some of them have to be done by the isp. Have you checked with them.
I don't want the Orbi in AP mode. I want it handling all my traffic because I have specific routes for VPN, DDNS, etc.
then get in contact with your isp to get your altice modem/router combo device switched to modem mode
Do you know of any way to restrict DHCP scope on the Orbi?
> Restrict DHCP?
That is the wrong qustion. "DHCP", and the IP addresses which it
dispenses, are _consequences_ of how your network is configured, not
anything determinative.> Everything was fine until 3 days ago when the cable modem I own was
> replaced with an Altice One (Suddenlink) cable modem.Did you ever Identify that device? If so, then I missed it.
> Ever since then, the Orbi is handing out IP addresses from the new
> cable modem instead of it's own range from DHCP.
I doubt it. It might help some if you exhibited some of these IP
addresses. If the Orbi is configured as a router, then its DHCP
server should dispense addresses from its own LAN subnet. If it's
configured as a wireless access point, then its DHCP server should be
disabled, and your DHCP client devices should be getting their IP
addresses from (the DHCP server in) your (unspecified) main router.
And, if a device is connected directly to that (unspecified) main
router, then it'd get its address from that router (DHCP server), too.> Is there a setting somewhere that I can force it to only use it's own
> DHCP IPs?No. You can't set it to do anything _else_ (with its own DHCP
server). Still the wrong question.
> [...] So far only WiFi devices are affected. The hardwired devices
> seem to be OK, though most of those devices I have set for static IP
> addresses...
Again, what are these (secret) IP addresses with which you're so
happy/unhappy? "hardwired" to _what_? How is the wireless stuff
configured on your (unspecified) main router? Same SSID(s) as the Orbi,
or different?Terminology: A "static" address is configured on the device itself.
What you configure on a (DHCP server on a) router is a reserved dynamic
address, not a static address. Are you talking about Address
Reservations on the Orbi, or actual static addresses configured on the
devices themselves, or what?
> I don't want the Orbi in AP mode. I want it handling all my traffic
> because I have specific routes for VPN, DDNS, etc.Then you should use it with a simple modem, not a modem+router.
> Do you know of any way to restrict DHCP scope on the Orbi?
Still the wrong question.
Try Option #2...
Couple of options,
1. Configure the modem for transparent bridge or modem only 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/ExposedHost or IP Pass-Through 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, configure AP mode on the Orbi router. https://kb.netgear.com/31218/How-do-I-configure-my-Orbi-router-to-act-as-an-access-point and https://www.youtube.com/watch?v=H7LOcJ8GdDo&app=desktop
