Span Ports - Lancope StealthWatch System Hardware Installation Manual

To monitor traffic inside your firewall by using a TAP, insert the TAP or optical
splitter between your firewall and the main switch or hub. A TAP configuration is
shown below.
An optical splitter configuration is shown below.

SPAN Ports

You can also connect the FlowSensor to a switch. However, because a switch does not
repeat all traffic on each port, the FlowSensor will not perform properly unless the
switch can repeat packets transmitted to and from one or more switch ports. This type
of switch port is sometimes called a mirror port or Switch Port Analyzer (SPAN).
Pre-Configuration Considerations 21