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  • Identification and resolution of TCP/IP problems
  • Checking the presence of the TCP/IP layer and IP addresses
  • Checking the configuration of the TCP/IP layer
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Stored procedures
Identification and resolution of TCP/IP problems
Identification and resolution of TCP/IP problems

Checking the presence of the TCP/IP layer and IP addresses

To find out whether the TCP/IP layer is installed, run the IPCONFIG command from a DOS prompt.
A response of this type should be displayed:
IP configuration of Windows
IP address: 192.168.1.50
Sub-network mask: 255.255.255.0
Default gateway: 192.158.1.220
Where 192.168.1.50 represents an example of a valid IP address.
If an error message is displayed or if the IP address is 0.0.0.0, then no TCP/IP layer is installed on the computer.
Install the network layer (in the Windows control panel, double-click "Network" and "Add/Protocol").

Checking the configuration of the TCP/IP layer

To check whether the TCP/IP layer is installed and configured properly, you must perform a 'ping' on the loop address (127.0.0.1).
To do so, run the PING command (127.0.0.1) from a DOS prompt.
A response of this type should be displayed:
Sending a 'ping' request on 127.0.0.1 with 32 bytes of data:
Reply from 127.0.0.1:  bytes=32 time<10ms TTL=128
Reply from 127.0.0.1:  bytes=32 time<10ms TTL=128
Reply from 127.0.0.1:  bytes=32 time<10ms TTL=128
Reply from 127.0.0.1:  bytes=32 time<10ms TTL=128
If an error message is displayed, then the TCP/IP layer was not installed properly on this computer.
Install the network layer (in the Windows control panel, double-click "Network" and "Add/Protocol").
Minimum version required
  • Version 23
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Last update: 05/26/2022

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