Testing and Trouble Shooting Client Connection By Nanda Ganesan, Ph.D. © Nanda Ganesan, All Rights Reserved

Possible Causes Incorrect IP settings DHCP server, DNS server and/or WINS server not being present on the network or incorrect settings for the respective servers NIC not working properly

Connection Troubleshooting Checking for proper IP address settings

Sequence of Steps Invoke web Browser Ping localhoast Ping gateway Ping last router Ping a known website

Checking for Connectivity Invoke the web browser and attempt connecting to a website such as

Entering the Command Mode for Pinging Run cmd from start menu

Pinging the Client Ping –Reserved for loop-back test Ping localhost

Pinging the Gateway Ping the gateway at Calstatela convention –.25 is the gateway for a subnet –Example: for the subnet , the gateway is

Pinging the Last Router Ping the last router at

Testing the Client Connectivity Access the network neighborhood –Click on My Network Places on the desktop

Nearby Computers First check the computers near the client –Computers in the same workgroup or domain often appear on this screen

Troubleshooting Network Interface Card Drivers Check for NIC status Most probable cause for incorrect operation –The correct driver may not be installed

Upgrading the Driver The NIC card properties must be accessed for upgrading the driver There are several ways of accessing the NIC properties –Once the properties window is accessed, the updating procedure remains the same

Location of the New Driver Floppy disk or a CD provided by the NIC vendor An updated driver downloaded to a folder Default driver that is provided by Microsoft

Summary Incorrect IP settings –Ping a machine in the same subnet preferably the gateway DHCP server, DNS server and/or WINS server not being present on the network or incorrect settings for the respective servers –Check the respective addresses NIC not working properly –Check to see whether the

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