The Switched Port Analyzer (SPAN) feature, which is sometimes called port mirroring or port monitoring,
selects network traffic for analysis by a network analyzer. The network analyzer can be a Cisco SwitchProbe
device or other Remote Monitoring (RMON) probe. Previously, SPAN was a relatively basic feature on the
Cisco Catalyst Series switches. However, the latest releases of the Catalyst OS (CatOS) introduced great
enhancements and many new possibilities that are now available to the user
