A reference to the index of dtiPathTraceabilityTable to which this DTI Client-Server connection has associated its traceable path. It is likely that many traceable paths of DTI clients would have the same rootServer and proxy server for multiple Client Server. A manager application can build the Traceability Path, e.g., of a DTI client, if reading this entry from a proxy DTI server as follows: Client: This entry DTI Client IP Address, This entry ifIndex, (see below) dtiProtocolClientVersion Proxy Server: dtiPathTraceabilityServerInetAddr, dtiPathTraceabilityServerOutPhyIdx, dtiPathTraceabilityServerProtVersion RootServer: dtiPathTraceabilityRootServerInetAddr, dtiPathTraceabilityRootServerOutPhyIdx, dtiPathTraceabilityRootServerProtVersion For the DTI client the Physical port would correspond to: PhysicalIndex where entAliasMappingIdentifier.PhysicalIndex = ifIndex