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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.
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.
Then you should use it with a simple modem, not a modem+router.
I would LOVE to, but this is the modem they gave me. Without it, our DVR services for cable TV stop working. They're all pre-configured to this cable modem.
And there are no right or wrong questions.
What I asked is still something I want to know. Is there a way to specify on the Orbi not to hand out IP's other than it's own.
It can be done in Linux with iptables, I just don't know how to do it on the Orbi, so I'm asking if it's even possible.
That's typically the problem with most community posts. You asl "how do I do xxxxx" and you get "Why don't you do this?" and bypasses the actual question.
There may be others that want to know the answer to this question in the future....
> And there are no right or wrong questions.
Sure there are. You've demonstrated that.
> What I asked is still something I want to know. Is there a way to
> specify on the Orbi not to hand out IP's other than it's own.
Which part of "No" was unclear?> No. You can't set it to do anything _else_ (with its own DHCP
> server). Still the wrong question.Still true. That's _why_ it's the wrong question.
You're asking why the Orbi does something which I believe that it
doesn't do, and how to make it do something which I believe that it
won't do. How many ways are there to say, "DEAD END"? This is how you
get to "Message 11" in such a discussion without making any actual
progress.
> [...] That's typically the problem with most community posts. [...]_I_ thought that the typical problem was not getting answers to basic
questions requesting useful information. Review. Look for "?".> [...] and bypasses the actual question.
That frequently happens because "the actual question" does not lead
to an actual solution to the actual problem, and the fellow who
"bypasses the actual question" is attempting to get to an actual
solution to the actual problem. Sadly, that often requires getting some
basic information from someone who's positive that he doesn't need to
provide any. That seldom ends well.> [...] this is the modem they gave me. [...]
I'll try once again. _WHAT_ is?
> [...] Without it, our DVR services for cable TV stop working. They're
> all pre-configured to this cable modem.
If you can't disable its Internet router functions, then you may not
be able to get what you want. Sadly, with my weak psychic powers, I'm
unable to investigate your (unspecified, not-only-a) "modem", to try to
determine what might be possible to do with it. And with a requirement
description like "I have specific routes for VPN, DDNS, etc.", I'm not
even sure what you really need to have it do.But feel free to continue your quest to solve your actual problem by
exploring the "DCHP" capabilities of the Orbi (or anything else). How's
that been working for you so far? (And you blame whom for that?)> There may be others that want to know the answer to this question in
> the future....Not likely, in my estimation.
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 [...] have been throwing shade [...]
_Who_ has been hiding more information?
> [...] I intentionally left off the make/model of the modem [...]
How helpful was that, exactly?
> [...] setting up VLANs on the Cisco switch [...]
Why didn't _I_ think to suggest that? I can be such a dope.
antinode wrote:> [...] You [...] have been throwing shade [...]
_Who_ has been hiding more information?
Hiding information? It's my network and my information. I share what I do/don't like about my network.
> [...] I intentionally left off the make/model of the modem [...]
How helpful was that, exactly?
VERY. It did, in fact, minimize the questions I didn't need.
[...] setting up VLANs on the Cisco switch [...]
Why didn't _I_ think to suggest that? I can be such a dope.
Because you didn't know I had a Cisco switch that was capable of VLANs. You were just assuming I was some moron that didn't know anything...
> [...] You were just assuming [...]
"assume" and "infer" are spelled differently for a reason.
Yes they are. That's why I used the correct one.
StephenCG wrote:Do you know of any way to restrict DHCP scope on the Orbi?
Of course you can: ADVANCED > Setup > LAN Setup ... Starting IP Address (the default is .2) ... Ending IP Address (default is .254) on that very same connected LAN subnet.
Hope you realize why I'm providing a different information than whats in the fine Orbi User Manual p.71 (assuming you talk of a consumer Orbi AC) - see my still unanswered query from above - because of the 192.168.1.0/24 (or whatever you had custom configured before while using your old cable modem) is not a fixed holy grail.
Needless to say, but worth mentioning anyway. You can't operate the same or an overlapping IP subnet on the Orbi LAN and WAN/Internet.Your idea of having the ISPs "LAN" with the IPTV on a dedicated VLAN works for me here for almost a decade. Some in-house links are run as trunks, and some smaller switches have access ports for that VLAN where the TV/media boxes are connected to. Disadvantage is that the TV/media boxes UPnP/DLNA renderer and Chromecast features are not available from the "primary" WLAN...
