Summary

46 IT Essentials: PC Harware and Software Companion GuideAfter you have confirmed that the computer is connected to the network and that the linklights on the NIC indicate a working connection, the computer needs an IP address. Mostnetworks are set up so that the computer receives an IP address automatically from a localDHCP server. If the computer does not have an IP address, you need to enter a unique IPaddress in the TCP/IP properties of the NIC.Every NIC must be configured with the following information:■■■Protocols: The same protocol must be implemented between any two computers thatcommunicate on the same network.IP address: This address can be configured and must be unique to each device. The IPaddress can be manually configured or automatically assigned by DHCP.MAC address: Each device has a unique MAC address. The MAC address is assignedby the manufacturer and cannot be changed.After the computer is connected to the network, you should test connectivity with the pingcommand. Use the ipconfig command to find out what your IP address is. Example 8-3shows sample output from the ipconfig /all command.Example 8-3 ipconfig /all CommandC:\> ipconfig /allWindows IP ConfigurationHost Name . . . . . . . . . . . . : computerPrimary Dns Suffix . . . . . . . :Node Type . . . . . . . . . . . . : HybridIP Routing Enabled. . . . . . . . : NoWINS Proxy Enabled. . . . . . . . : NoEthernet adapter Local Area Connection:Connection-specific DNS Suffix . : Description . . . . . . . . :Broadcom 440x 10/100 Intergated ControllerPhysical Address. . . . . . . . . : 00-12-3F-E0-59-3DDhcp Enabled. . . . . . . . . . . : YesAutoconfiguration Enabled . . . . : YesIP Address. . . . . . . . . . . . : 192.168.1.112Subnet Mask . . . . . . . . . . . : 255.255.255.0Default Gateway . . . . . . . . . : 192.168.1.1DHCP Server . . . . . . . . . . . : 192.168.1.1DNS Servers . . . . . . . . . . . : 192.168.1.1Lease Obtained. . . . . . . . . . : Monday, November 05, 2007 5:05:13 PMLease Expires . . . . . . . . . . : Monday, November 12, 2007 5:05:13 PM