Patent ID: 6345295
Filing Date: 2002-02-05
Classification: G06F,H04L

Abstract:
In a computer system attachment network, said network having a plurality of communication paths and communicating information on said communication paths as events, said information having addressing information in a header thereof, a trace facility, comprising:a trace tool at each of associated ones of said communication paths, comprising at least one trace buffer and an address filter, said address filter coupled to said associated communication path, detecting said addressing information for each event, selecting information of an event on said communication path having at least one selected address, and storing said selected event information to said at least one trace buffer, thereby conducting a trace; a breakpoint connection at each said trace tool interconnecting each said trace tool; and a trace tool control at each said trace tool, responsive to a trace stop command at said trace tool, to stop said traces at said address filter and said trace buffer, and to issue a breakpoint signal on said breakpoint connection to all said interconnected trace tools, said trace tool control of each said interconnected trace tool responsive to said provided breakpoint signal to stop said trace at said address filter and said trace buffer thereat, whereby said trace is saved at each said trace tool.