Network Troubleshooting Using VMware ESXCLI 5.1
When it comes to network troubleshooting in an ESXi host, there are various types of information that can be useful to a vSphere administrator such as basic information like a virtual machine’s IP Addresses, MAC Addresses, Uplink ports, Port ID, etc. to the network statistics view in the [r]esxtop command-line utility. However, all of this useful information today is spread across multiple tools and this can be challenging for a vSphere administrator when needing to quickly retrieve this data while troubleshooting an issue.
With the release of vSphere 5.1, the network namespace in ESXCLI has been enhanced to include a comprehensive set network statistics at various points in the virtual network. This enables a vSphere administrator to easily get an overall status of the vSphere network as well as provide the ability to drill down further for troubleshooting.
In ESXCLI 5.1, you can now retrieve additional network statistics at a physical NIC (vmnic), on a per VLAN (portgroup) which needs to be configured and on a per VM port (vNIC). Here is a quick diagram to help you visualize where you can retrieve network statistics:
To learn more and to read the entire article at its source, please refer to the following page, Network Troubleshooting Using ESXCLI 5.1- Uptime (VMware and Business Continuity)