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Old 12-03-2007, 12:06 PM   #1
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which is the protocol for polling of lan wire for detection of network connection

hey i would like to know that which protocol is being used for constant polling of network would see in windows that as sson as you remove your lan cable the OS would display a message that the network is not connected even without a manual request n similarily it confirms bak wen u put ur lan wire back....same is the case with Linux(i suppose)
What is the basic protocol governing it
Old 12-03-2007, 01:14 PM   #2
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It would really help if you told what Linux distribution you are using. You might start with man ifconfig.
Old 12-03-2007, 02:05 PM   #3
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i m talkin of a general case
i m sure that there must be a general protocol for polling of lan port to detect whetehr it is connected to the network
Old 12-03-2007, 02:14 PM   #4
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there's no "protocol" in a networking sense. it's just going to be existence of electrical signals being translated by the hardware and handled by the operating system (or not). under linux services like NetworkManager make use of this automatic detection, but they are just joining dots together, there is no "protocol" outside of coding conventions.
Old 12-03-2007, 06:45 PM   #5
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Actually I believe that NetworkManager uses MII (Media Independent Interface)link status detection. Here's a link about mii-tool. It can be ran with a -w to watch the interface for changes. I

Last edited by javaroast; 12-03-2007 at 06:50 PM.


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