In the last post here, I provided some basic information on SNMP and also shared which networking MIB modules are supported in vSphere 5.1. Before I describe how to use these MIB modules, there is one correction I would like make to the last post. I had mentioned that network related Trap is not supported, but that is not correct. SNMP agent on the host does send SNMP Trap when a physical link goes UP or DOWN. The Trap is like an interrupt. Instead of polling the values of the different network parameters, specific trap tells the user which network parameter needs attention.
Let’s take a look how you can use Networking MIBs to monitor virtual switch parameters.

