Understanding network counters at the Guest OS level is important for an SDDC architect. The data inside the Guest provides better visibility.
The following screenshot shows Windows 7 Resource Monitor. You will quickly notice that a lot of this information is not available at the vSphere layer:
At the hypervisor layer, we can only see packet loss. Can you notice a counter that will tell you whether there is a network issue even if there is no packet loss?
Yes: latency.
It is in fact available at the process level. This is important as different processes can be talking to different destinations. It is in fact normal for a web browser to hit multiple sites. As you can see here, a single browser (Google Chrome) is talking to different websites.
In the preceding screenshot, the Windows 7 PC was playing an HD video over VMware Horizon View. Latency was good at below 50 milliseconds, and View PCoIP was using less than 100 KBPS of bandwidth...