Measures reported by CisSDWCrashTest

In the context of a Cisco SD-WAN overlay network, port hopping is the process by which devices try different ports when attempting to establish connections with each other, in the event that a connection attempt on the first port fails.

If a controller device/component-Cisco vBond Orchestrator, Cisco vManage, or Cisco vSmart Controller-is down or has crashed for any reason and the vEdge routers remain up, when the controller device comes back up, the connection between that device and the vEdge router might shut down and restart. This behavior occurs because of port hopping. When one device loses its control connection to another device, it port hops to another port in an attempt to re-establish the connection. For example, when Cisco vBond Orchestrator crashes, Cisco vManage might lose or close all its control connections. Cisco vManage then port hops, to try to establish connections to the Cisco vSmart Controllers on a different port. This port hopping on Cisco vManage shuts down and then restarts all its control connections, including those to the vEdge routers.

If a component crashes frequently, the connections will also be frequently closed and re-established. This may affect the performance of the entire Cisco SD-WAN overlay network. To avoid such performance degradation, it is necessary to figure out how frequently each component of the Cisco SD-WAN appliance crashed. The CisSDWCrashTest test helps administrators in this regard!

This test reports the number of times each component of the target Cisco SD-WAN appliance crashed. The detailed diagnosis of this test will help administrators figure out the time during which the crash occurred and the name of the crash file. Using this test, administrators can analyze the reason behind such crashes and rectify issues before end users start complaining of frequent failures on the overlay network.

Outputs of the test : One set of results for each component of the target Cisco SD-WAN that is being monitored.

The measures made by this test are as follows: