Avatar of LeighWardle
LeighWardle
Flag for Australia asked on

Getting NETGEAR Cable Modem Gateway CG3000D-2 to coexist with FRITZ!Box 7270

Hi Experts,

I have been running a FRITZ!Box 7270 as an ADSL modem, router etc.

I have just added a NETGEAR Cable Modem Gateway CG3000D-2 (because I have switched from ADSL to cable Broadband).
It's on a different subnet (192.168.0.x) to the FRITZ!Box (192.168.1.x)

These are the LAN Settings for the NETGEAR:
LAN IP Address:       192.168.0.1
Subnet Mask: 255.255.255.       
DHCP Server:  No  (was Yes, but I want to change it to No, so that the FRITZ!Box does DHCP)

I have tried changing the settings to:

LAN IP Address:       192.168.1.254
Subnet Mask: 255.255.255.       
DHCP Server:  No

But when I click the Apply button, I get this error:

"LAN IP address and Guest LAN IP can't be in the same subnet"

What's the "Guest LAN IP"?

Regards,
Leigh
RoutersWireless HardwareNetworking Hardware-Other

Avatar of undefined
Last Comment
LeighWardle

8/22/2022 - Mon
Dave Baldwin

Each of those devices wants to 'own' the network it is connected to.  Putting one on a different subnet will not help.  They would have to be completely physically different networks.  

I actually have that setup here with DSL and Cable.  I have several computers with two NIC cards, one connected to each device.  They have to be setup so that only one of them has a 'gateway' defined because Windows will just get confused if you enable the gateways on both of them.
ASKER CERTIFIED SOLUTION
LeighWardle

THIS SOLUTION ONLY AVAILABLE TO MEMBERS.
View this solution by signing up for a free trial.
Members can start a 7-Day free trial and enjoy unlimited access to the platform.
See Pricing Options
Start Free Trial
GET A PERSONALIZED SOLUTION
Ask your own question & get feedback from real experts
Find out why thousands trust the EE community with their toughest problems.
LeighWardle

ASKER
I solved the problem myself.
This is the best money I have ever spent. I cannot not tell you how many times these folks have saved my bacon. I learn so much from the contributors.
rwheeler23