Method for finding the address of a workstation assigned a dynamic address
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United States of America Patent
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-
Apr 30, 2002
Grant Date -
N/A
app pub date -
Mar 10, 1997
filing date -
Mar 10, 1997
priority date (Note) -
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status (Latency Note)
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Abstract
A protocol for locating a server program on a workstation that is dynamically allocated IP address is disclosed. To located a desired server program, a special client program sends out an 'Are you there?' message to the last known IP address of the desired server. If the server responds, the client may directly access the server program using the last known IP address. However, if there is no response then the client program sends out a directed broadcast 'Are you there?' message to the subnet where the desired server last resided. If the desired server receives the directed broadcast message, the server program responds with the current IP address such that the client program can access the server. If no response is received from the directed broadcast, the client program will send directed broadcast messages to other similar subnets in order to located the server program. Ordinary Domain Name Service is used as a back-up if no response is received.
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