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Forum Discussion
sfossum
Aug 20, 2020Aspirant
Setting IP address in AP mode
I would like to set a static IP address in my R9000. It is set to AP mode and the Internet option is grayed out. Is it possible to set a static address in AP mode?
- Aug 27, 2020
Thank you everyone for your help suggestions. I ended up letting the HP 4650 printer select it's own "static" IP address which was at the upper end of the DHCP pool. I should not have a problem with that. If it does get assign to some other device, I'll have a new mystery to solve. My original problem of printer showing up as offline is resolved.
antinode
Aug 20, 2020Guru
> I would like to set a static IP address in my R9000. [...]
For what, some client device?
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.
> [...] It is set to AP mode [...]
That disables its DHCP server.
> [...] Is it possible to set a static address in AP mode?
It should be possible to reserve a dynamic address on your router,
where your DHCP server runs. It's not possible on a wireless access
point, where there is no DHCP server.
You're talking to the wrong box.
- sfossumAug 20, 2020Aspirant
Thanks for your comments.
I realise that the actual IP address is set at the device but where do I find out which IP addresses, if any, are reserved on the R9000 router. My problem is a HP 4650 printer that keeps going offline on one of my two Windows laptops. I thought assiging a static IP address might resolve the problem. Nothing else I've tried seems to help.
- sfossumAug 20, 2020Aspirant
Correction. I would like to find out if there is any IP addresses that are not allocated to the DHCP server and if it's possible to reserve an address to manually assign to a device. Perhaps I am incorrect in assuming that the router is assigning the IP addresses. The router is connected to our vendors DSL modem and I have no way to change any internal settings.
- michaelkenwardAug 22, 2020Guru - Experienced User
sfossum wrote:
The router is connected to our vendors DSL modem and I have no way to change any internal settings.
And that modem is? Make and model?
- sfossumAug 27, 2020Aspirant
The modem is a Comtrend NexusLink 3112u from our local provider Nuvera in Prior Lake, Minnesota.
- sfossumAug 20, 2020Aspirant
I guess am confused on the function of a router in AP mode. The R9000 router is wired directly to the DSL modem. Does the fact that it is in a AP mode mean that the router does not allocated IP addresses to the clients dynamically?
- antinodeAug 20, 2020Guru
> [...] where do I find out which IP addresses, if any, are reserved on
> the R9000 router. [...]You don't. There aren't any.
If the R9000 is configured as a WAP, then it does not participate
actively in DHCP for a client device. Your main router handles that
job. An R9000-as-WAP is effectively a (stupid) network switch.> [...] I would like to find out if there is any IP addresses that are
> not allocated to the DHCP server and if it's possible to reserve an
> address to manually assign to a device. [...]I'd assume so, but that's a question about your router (and its DHCP
server), not about your R9000-as-WAP. And I know nothing about your
main router.> [...] Perhaps I am incorrect in assuming that the router is assigning
> the IP addresses. [...]
> [...] Perhaps I am incorrect in assuming that the router is assigning
> the IP addresses. [...]I'd expect that your actual "the router" _is_ doing that. But an
R9000-as-WAP is a WAP, _not_ a router.> [...] The router is connected to our vendors DSL modem [...]
If you mean that the _R9000-as-WAP_ (_not_ a router) is connected to
your "our vendors DSL modem", then that device, whatever it is, would
seem to be a modem+router, not a simple "modem".> [...] I have no way to change any internal settings.
If that's true, then that may be bad news, because that's exactly
what you'd want to do.
A typical router DHCP server allows you to reserve an IP address for
a client device (like your printer). That way, the client device still
uses DHCP to get its IP address, but it always gets the _same_
(reserved) IP address.Look for "Address Reservation" in the R9000 User Manual to see how
you would do that, _if_ you were using the R9000 as a router, and not as
a WAP.You could (most likely) also configure the client device to use a
static address, configured on the device itself. Instructions for that
should be somewhere in the device (printer) documentation.However, you wouldn't want that static address to be in the router's
(DHCP server's) DHCP address pool. The potential problem is that if
that address is in the router's (DHCP server's) DHCP address pool, then
the router (DHCP server) might issue that same address to some other
client device, and you don't want two devices to have the same address.
The way to avoid that problem would be to restrict the router's (DHCP
server's) DHCP address pool, and use only non-pool addresses as static
addresses on your client devices.On a typical Netgear router, by default, the DHCP pool covers the
whole usable address range (".2" - ".254"). In that case, you'd need to
shrink that pool address range. For example, you could change it to
".2" - ".199", and then use addresses in the ".200" - "".254" range as
static addresses. In the R9000 User Manual, look for "Specify the IP
Addresses That the Router Assigns". But, again, that would be _if_ you
were using the R9000 as a router, and not as a WAP.I know nothing about the DHCP pool on your (unspecified) "our vendors
DSL modem". If it's really a black box, then perhaps your (unspecified)
ISP can tell you more about it.Either way, you'd need to have some control over (or, at least, some
knowledge about) the DHCP server on your (unspecified) "our vendors
DSL modem".Another possibility might be to configure your (unspecified) "our
vendors DSL modem" as a modem-only, and using the R9000 as your router
(rather than as only a WAP). In that case, you could simply use DHCP
"Address Reservation" on the R9000-as-router. But, again, I know
nothing about your (unspecified) "our vendors DSL modem". (Except that
it seems to be a modem+router, not a simple "modem".)
> I guess am confused [...]Yup.
> [...] Does the fact that it is in a AP mode mean that the router does
> not allocated IP addresses to the clients dynamically?Exactly. The DHCP server on the main router does that job.