Accessing a router which isn't a DHCP server

I have a Linksys WRT54GL router with Tomato installed on it.

My network configuration requires me to disable the DHCP server on the router. After disabling it, I do not know the IP of the router because it isn't my default gateway anymore. Now it is impossible to change settings (e.g. wireless password).

Any idea how to access the router?

DHCP server does not necessarily mean default gateway.

If you are not using the DHCP server on your router, you need to either

• set up another DHCP server on another computer or something else somewhere
• assign IPs manually to all devices

Clients reach the DHCP server through broadcasts, i.e. traffic that is set to reach all nodes on your network. So nothing needs to know the IP of your DHCP server as long as the DHCP server is listening on something that is in the same subnet as the rest of your network.

Your DHCP server should be configured to hand out the router's IP as the default gateway.

Per your situation, if all you did was disable the DHCP server, the IP of the router probably didn't change and you can still use the same IP to get to it. If you do NOT have a DHCP server elsewhere on your network, try setting your IP to 192.168.X.44 subnet mask 255.255.255.0 - X is probably going to be 0 or 1 - then you can probably reach your router at 192.168.X.1 or 192.168.X.254.

Best bet: Reset the router. The DHCP will turn back on and you can then connect. Credentials are probably admin/admin. If the DCHP was off, you probably weren't using it for much more than the wifi function, so there won't be many settings to reconfigure.

Try doing a 30 30 30 reset.

Follow these steps to perform a router hard reset:

1. When the unit is powered on, hold down its reset button for 30 seconds.
2. While still holding down the reset button, unplug the router from power and hold for an additional 30 seconds.
3. Still holding down the reset button, turn on power to the router again and hold for 30 more seconds.

in Ipv4 properities set ip manually.

1. Ip address has to start the same as router ip except for last number (has to be different, usually higher).
2. Mask is set automatically.
3. Gate ip is your router ip.
4. the first DNS is again your router ip.
5. alternative DNS can set randomly (for examle google DNS 8.8.8.8)

Then just go to your browser and write your router ip to get to its setting

p.s. You can find router ip in command line by writing ipconfig - gate ip is ip of your router.