04827411 is referenced by 197 patents and cites 1 patents.

Each network node in a communications network maintains its own copy of the network topology database defining network resources. Each resource record contains a "timer" field which is initially set to a maximum value but which may be decremented on a daily basis. If the timer field is decremented to zero without being reset, the node unilaterally removes the resource record from its copy of the database. The timer field will normally reach zero only for obsolete resource records since each network node responsible for a resource broadcasts a timer-resetting message for the resource (1) each time the resource status changes, (2) when the node first joins or rejoins the network, and (3) on a periodic (weekly) basis regardless of whether conditions (1) or (2) have occurred.

Title
Method of maintaining a topology database
Application Number
7/62272
Publication Number
4827411
Application Date
June 15, 1987
Publication Date
May 2, 1989
Inventor
Diane P Pozefsky
Chapel Hill
NC, US
Karla J Norsworthy
Raleigh
NC, US
James P Gray
Chapel Hill
NC, US
John L Eisenbies
Raleigh
NC, US
John E Drake Jr
Pittsboro
NC, US
Philip F Chimento Jr
Durham
NC, US
Alan E Baratz
Chappaqua
NY, US
Andrew H Arrowood
Raleigh
NC, US
Agent
Gerald R Woods
Assignee
International Business Machines Corporation
NY, US
IPC
G06F 15/16
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