When I send traffic using STC Virtual, traffic goes through the DUT, but the Rx counter and the Rx NIC counters remain as zero.

When I send traffic using STC Virtual, traffic goes through the DUT, but the Rx counter and the Rx NIC counters remain as zero.

There are two methods to correct this problem. Method 1: • Select Use Source MAC Address from Physical Interface • Right-click All Devices and select Start MAC Learning on All Ports This method is usually for Device Blocks with only one device. Method 2 Set vSwitch and Virtual port to Promiscuous                1. Set the vSwitch to Promiscuous mode by editing the Properties of the vSwitch and setting it to Accept. 2. Set the Virtual port to Promiscuous mode by opening the console of the specific virtual machine and entering:      promisc on      activate      reboot     Note: Setting the vSwitch to promiscuous mode to support multiple devices per port using the standard vSwtich has significant negative effects on system performance and should be avoided if possible. If a Cisco Nexus 1000v vSwitch is used in conjunction with vSphere, neither setting the vSwitch to promiscuous mode or using the "Use Source MAC address from Physical Interface" feature in the STC GUI is required. Multiple devices with random MAC Addresses is supported in this configuration without performance impacts. The Nexus 1000v vSwitch is a learning switch, and behaves like any standard hardware based switch.