Monitoring Ports

You can designate a port to be a monitor port. This action forwards the port's incoming and outgoing traffic to another port and frees it for use with the Switch Port Analyzer (SPAN). You can then troubleshoot network problems by examining traffic on other ports or segments.

Any port can be a monitor port, with these restrictions:

The SPAN window shows you which port, if any, is being used as a monitor port. It also allows you to reassign monitoring to another port. To open the SPAN window, choose Port > SPAN.