Gideon T. Rasmussen writes, "The most efficient manner to troubleshoot a network issue is to approach it in a systematic way. Start by gathering background information; then troubleshoot following the Open System Interconnection (OSI) networking model." . . .
Gideon T. Rasmussen writes, "The most efficient manner to troubleshoot a network issue is to approach it in a systematic way. Start by gathering background information; then troubleshoot following the Open System Interconnection (OSI) networking model.

It is critical to obtain a complete picture of the issue. Carefully consider how the problem manifests itself. For example, does it apply to inbound traffic, outbound traffic or both?"