Routers 2 routers, want to access UI on first one

[trevortron]

I have a network set-up not unlike the one in the picture (courtesy of PortForward.com).



In my case, R1 is a 4G modem/ router (placed up in the gods for best 4G signal) and R2 is the 'domestic' router serving the house.

Occasionally I need to connect to R1 (perhaps just to re-boot it) but typing in its lan-side IP doesn't work, I just get a 404.

R2 is running DD-WRT (only 'cos it came with it) so plenty of scope for fiddling with settings.

I (think) I could simply switch off DHCP on R2, but I don't want R1 handling all the routing work, as that seems to cause it to hang.

R1: LAN IP 192.168.1.36
R2: WAN IP 192.168.1.107
R2: LAN IP 192.168.1.1

Any hints? Can't help thinking it should be simple.

TIA.

 

[turner brown]

have you got r2 setup as a switch and let router 1 asign all the ip addresses

 

[Mick]

Why is your wan ip the same network as your local network?

 

[Him Her]

Surprised anything at all works tbh. If the subnet mask is 255.255.255.0 then arp is fooked

Ideally you need a public subnet between the two routers although you could get away with a private one and double-NAT I suppose. Are they actually connected like that? So all Internet traffic is via both routers and you only use 4g?

As a first pass change R1 Lan to 192.168.0.36 and R2 Wan to 192.168.0.107, subnet mask at 255.255.255.0 and what happens?

 

[trevortron]

have you got r2 setup as a switch and let router 1 asign all the ip addresses

No, I don't think so. I don't want to ask too much of R1 (ISP-supplied 4G modem/router) 'cos it hangs.

Why is your wan ip the same network as your local network?

'Cos that's how it came out the box lol!

Surprised anything at all works tbh. If the subnet mask is 255.255.255.0 then arp is fooked

Ideally you need a public subnet between the two routers although you could get away with a private one and double-NAT I suppose. Are they actually connected like that? So all Internet traffic is via both routers and you only use 4g?

Yes. And I think so.

As a first pass change R1 Lan to 192.168.0.36 and R2 Wan to 192.168.0.107, subnet mask at 255.255.255.0 and what happens?

I will give this a try. If you don't hear back from me in a while it's 'cos it broke!

 

[trevortron]

Well after a couple of re-boots it all seems to work, happy days :thumbsup:. Thanks for all the help.