Chapter 3 Setting up your computer IP address 19Nortel Business Secure Router 222 — Fundamentals7 Click Obtain DNS server address automatically if you do not know yourDNS server IP address(es).a If you know your DNS server IP addresses, click Use the following DNSserver addresses, and type them in the Preferred DNS server andAlternate DNS server fields.b If you have more than two DNS servers, click Advanced, select the DNStab and then configure the two DNS servers using the Add button.8 Click OK to close the Internet Protocol (TCP/IP) Properties window.9 Click OK to close the Local Area Connection Properties window.3.2 Checking your computer IP address1 On your computer, click Start, (All) Programs, Accessories and thenCommand Prompt.2 In the Command Prompt window, type ipconfig and then press Enter. Yourcomputer IP address must be in the correct range (192.168.1.2 to192.168.1.254), with subnet mask 255.255.255.0, in order to communicatewith the Business Secure Router.Refer to Nortel Business Secure Router 222 Configuration — Basics(NN47922-500) and Nortel Business Secure Router 222 Configuration —Advanced (NN47922-501) for detailed IP address configuration for otherWindows and Macintosh computer operating systems.