one of the most common used items is to ping 127.0.0.1 which is your loopback device and this will determine if you tcp/ip stack is working properly
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Use of loopback address
Hi friends, I wanted to know what the basic use of loopback adresses are. I know that it gives the adress of the local machine. I wanted to know what the other uses of LBA are. Thank you
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Answers
Hi RajeshTN
It also gives you an IP address and network type functionalities when you don't have any physical network equipment (like a network card).
Also, some software will not function if it does not detect a nework (not just a network card, it has to be plugged into a switch or hub) the loopback adapter gets around this as well.
Kind regards
SteveySteve
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by: pjedmondPosted on 2003-01-30 at 03:44:20ID: 7844887
1. Testing - A nice simple test of network functionality.
2. Some applications work together by intersocket communication - localhost provides that address so that the elements can all work on the same PC
3. Enables you to run a web/ftp/ any other server on the same PC that you are working on without having to know the allocated IP address from a DHCP server.
Basically it just makes life a lot simpler, and prevents anyone having to worry about the complexities of the outside world if the 2 processes are on the same machine:)
Hope that helps:)