12.3. Use Third-Party PCIe Analyzer
A third-party protocol analyzer for PCI Express records the traffic on the physical link and decodes traffic, saving you the trouble of translating the symbols yourself. A third‑party protocol analyzer can show the two‑way traffic at different levels for different requirements. For high-level diagnostics, the analyzer shows the LTSSM flows for devices on both side of the link side-by-side. This display can help you see the link training handshake behavior and identify where the traffic gets stuck. A traffic analyzer can display the contents of packets so that you can verify the contents. For complete details, refer to the third-party documentation.