Q6950010: How can I monitor network bandwith and network packets on the Windows workstations and servers in my network?
Create a new 'Performance Counter' check. Select the 'Network Interface' performance object, and choose the relevant NIC card as the instance. Then, select your performance item(s), e.g. 'Bytes Received/sec, 'Bytes Sent/sec', 'Bytes Total/sec', 'Current Bandwidth', 'Packets Received/sec', etc.