2.17.1 Network IDIH

Operators with multiple DSRs have a need to diagnose and troubleshoot problems in their Diameter network with end-to-end visibility. N-IDIH provides support for network-wide IDIH trigger installation and trace analysis allowing centralized, end-to-end troubleshooting of transactions traversing any DSR in the network.

Whenever a Diameter message matches the trace criteria at a given site, the network trace also captures the path that the message took as it traversed through multiple DA-MPs within the network. Whenever a network trace is created, the trace criteria associated with the trace becomes active at each DA-MP within the network. Whenever a DA-MP determines that a particular diameter request or answer matches the trace criteria for an active network trace, the DA-MP captures the TTR associated with the Diameter transaction and forwards the TTR to the IDIH. In addition, the DA-MP compels any subsequent DSR node through which the Diameter message traverses to also capture TTR data associated with the Diameter message. Each DA-MP that was compelled forwards the captured TTRs to the IDIH associated with its site. The craftsperson can then use the DSR maintenance GUI from any DSR site to visualize the captured trace data, which includes TTRs captured at every site within the network.

Figure 2-69 Message Flow for Network Wide Trace