Changing The Gateways Ip Address - CTC Union ATU-R140 User Manual

ATU-R140 ADSL Ethernet USB Router User's Guide
In addition to the DHCP server feature, the gateway supports the DHCP relay function. When
the gateway is configured as DHCP server, it assigns the IP addresses to the LAN clients.
When the gateway is configured as DHCP relay, it is responsible for forwarding the requests
and responses negotiating between the DHCP clients and the server. See figure 11.
Figure 11 (Example of a DHCP Relay configuration)
By turning off the DHCP server and relay the network administrator must carefully configure
the IP address, Subnet Mask and DNS settings of every computer on your network. Do not
assign the same IP address to more than one computer and your Gateway must be on the
same subnet as all the other computers.
The apply button will temporarily save this connection. To make the change permanent you
need to click on Tools (at the top of the page) and select System Commands. At the system
commands page, click on Save All.

4.5.2 Changing the gateways IP address

You can change the gateway's IP address by going to the Home screen, click setup and
under LAN Setup, select LAN Configuration, press Configure. This will bring up the screen
shown in Figure 12.
4.5.2.1 Static IP address assignment
Your gateway's default IP address and subnet mask are 192.168.1.1/255.255.255.0; this
subnet mask will allow the gateway to support 254 users. If you want to support a larger
number of users you can change the subnet mask; but remember. The DHCP server is
defaulted to only give out 255 IP addresses. Further remember that if you change your
gateways' IP address and you have DHCP enabled, the DHCP configuration must reside
within the same subnet.
The hostname can be any alphanumeric word that does not contain spaces. The domain
name is used to in conjunction with the host name to uniquely identify the gateway. To access
the gateway's web pages the user can type 192.168.1.1 (the gateway's default IP address) or
type mygateway1.ar7.
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