Nighthawk AC1900 WiFi Cable Modem Router
Specify Network Settings User Manual45
This IP address must be in the same subnet as the modem router.
b. In the Ending IP Address field, type the number at the end of the range of IP
addresses.
This IP address must be in the same subnet as the modem router.
7. Click the Apply button.
Your settings are saved.
The modem router delivers the following parameters to any LAN device that requests DHCP:
• An IP address from the range that you have defined
• Subnet mask
• Gateway IP address (the modem router’s LAN IP address)
• DNS server IP address (the modem router’s LAN IP address)
Disable the DHCP Server Feature in the
Modem Router
By default, the modem router acts as a DHCP server. The modem router assigns IP, DNS
server, and default gateway addresses to all computers connected to the LAN. The assigned
default gateway address is the LAN address of the modem router.
You can use another device on your network as the DHCP server, or specify the network
settings of all your computers.
To disable the DHCP server feature in the modem router:
1. Launch an Internet browser from a computer or wireless device that is connected to the
network.
2. Type http://www.routerlogin.net or http://www.routerlogin.com.
A login window opens.
3. Enter the user name and password.
The user name is admin. The user name and password are case-sensitive.
The BASIC Home page displays.
4. Select ADVANCED > Setup > LAN Setup.
5. Clear the Use Router as DHCP Server check box.
6. Click the Apply button.
7. (Optional) If this service is disabled and no other DHCP server is on your network, set your
computer IP addresses manually so that they can access the modem router.
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