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Forum Discussion
RS300 and D7800 will not connect to ISP (to the internet)
Despite following instructions and re-booting many times in different sequences my new RS300 paired with a D7800 (Modem/Router) in "Modem Only" mode will not connect to my ISP (PlusNet) and, therefore, the internet.
I have contacted PlusNet and confirmed the settings are correct.
The D7800 connect quite happily when set to "Modem/Router Mode" and will also connect if I tell it to use the MAC address of the new RS300 instead of its own (Default) MAC.
Suggestions would be helpful.
5 Replies
I you leave the D series modem in router mode with it's Wi-Fi radios disabled and set the RS to router and and change the IP address on the RS router from 192.168.1.1 to 192.168.0.1 does the RS then get internet services thru the D series modem?
Use the DMZ on the modem for the RS IP address given by the modem to the RS router.
Check with the ISP to ensure that there isn't any special or specific WAN configurations needed for there services.
Be sure your using a good quality LAN cable between the modem and router. CAT6A STP is recommended.
Thanks for your suggestions, I agree that it certainly looks like a Nat problem (clash).
(The reason I have not replied earlier is that I have other things I need to do and trying various permutations of setting takes up a lot of time!)
Finding the solution is the problem and whilst the D7800 can be set to Modem Only Mode, Netgear make no mention of this in its manual.
From past experience this sort of problem will probably have a stupidly simple solution, the problem is finding the solution!
As far as the RS300 is concerned, Netgear do not tell us how the RS300 communicates with the D7800 Modem via the Modem link, (I presume it uses ethernet, if so, with what addresses), in order to tell it what to do. Currently the D7800 (Modem.Router) is set to 192.168.100.1 as the gateway, The settings are greyed out once it is operating in Modem Only Mode. The RS300, however, failed to connect whilst it was set to its default of 192.168.1.1, (therefore, I believe, no NAT clash).
The "Wizards" fail because they can find no Internet connection, but presumably that is because the Modem has not been told where to look.My knowledge of IP setups and protocols is limited but I am not keen on using DMZ because of the security warnings.
By the way I have set up my network using 192.168.100.xxx (I believe this is fairly standard and avoids using 192.168.1.xxx (which is possibly too common).
This article is for cable gateways however could be applied in same situation for D series DSL gateways:
https://kb.netgear.com/27191/How-to-set-the-cable-modem-router-to-be-on-modem-only
I would avoid using 192.168.100.1 as this is a common IP address for cable modems and gateways and possible some DSL modems/gateways and is not a standard common network subnet to use for the main home network. These use this IP address as the management web page access IP address.
I recommend using 192.168.0.1 on the RS. I use this IP address on my home production network for years and have ran into any conflicts with modems or gateways using 192.168.1.1.
NG routers should be auto detecting any IP address conflicts with other routers upstream using 192.168.1.1 and should change to something else, i.e. 10.x.x.x.
I think if you can get the D7800 in to modem only mode, then you can use 192.168.1.1 or .0.1.
Having spent many hours trying varius configurations my problem was passed on to a more specialist team who have concluded that the RS300 is not compatible with the D7800 as a modem.
It turns out that the RS300 assumes the modem automatically sets the VLANID, as is the case in FTTP modems. They therefore did not include a setting for VLANID, (as in the D7800), and so it cannot tell the "dumb" D7800 which VLANID to use and how to connect to my ISP.
I would have thought it would have been easy for Netgear to play safe by providing the option to select the VLANID manually or choose to leave as automatic, (as in many other settings).
It seems that the Netgear developers believed the hype that the UK would have switched off all the copper, (analogue), as used in FTTC by 2025, (as it stands it could be, at least, 2027).
They should have known better! When have any big projects, such as this, ever been finished at the projected date?Incidentally I have not moved to FTTP because my current FTTC is plenty fast enough, (speed isn't everything) and so see no need to pay the extra.
Speed does not come for nothing, there is not only the cost of the service, but the additional cost of running the terminal, (modem) it may only be a small amount but over 365 days it adds up to kWh. Don't forget that when the terminal or modem is on your premesis you pay to run it, not the network company as is the case for FTTC!As it is, I have an RS300 which I cannot use as a router. It has, however, been pointed out that I can switch its Mode over to use as a Wi-Fi AP, so I can, at least, use the better Wi-Fi.
How about turn OFF all Wifi radios on the D7800 and use the DMZ on the D7800 for the RS in router mode?
For the most part DSL here in the USA has gone or being converted to Cable or Fiber, not much DSL here in the USA left anymore. And NG doesn't produce DSL modems anymore. I agree, NG could have included WAN side VLAN option which they do have some one other model routers.
