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SolarWinds NTA monitors traffic flow over interfaces on your network devices. On any selected device interface, network traffic can flow both into the device (ingress) and out from the device (egress). The header of any SolarWinds NTA view showing interface-level traffic provides a control that gives you the ability to choose the traffic direction you want to monitor. The traffic direction control gives you the following options for traffic flow monitoring:
The size of ingress and egress packets is usually the same. However, it can differ for example if you have CBQoS policies defined for individual interfaces, and these policies define that certain packets are dropped and not delivered to the appropriate endpoint.
Consider the following scenario with two flows:
For PC2, SolarWinds NTA shows the following interfaces: