Olicom CrossFire 8730, Reference Manual

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CrossFire 8730 Switch Reference Guide, DOC-7047 v. 1.1 Monitoring Port Traffic
6. Monitoring Port Traffic
The CrossFire 8730 Fast Ethernet Translation Switch allows you to configure a
Switched Port Analyzer function for monitoring traffic on a port by defining a
monitor port where an external probe can observe traffic from a selected monitored
port. The monitoring function does not interfere in any way with the normal traffic
flow in the switch.
The external probe (e.g. a protocol analyzer) is not supplied with the switch.
You can monitor traffic going through a monitored port in two different ways:
Active Monitoring
Data-only monitoring - you can select the monitored port and monitor port, all data
traffic received and transmitted on the monitored port is copied to the monitor port
such that it can be received by an external probe. The MAC frames are not copied
to the monitor port.
Passive Monitoring for Token-Ring Ports
All traffic monitoring (data and MAC protocol) - makes a copy of all data and MAC
frames received and transmitted on the monitored Token-Ring port to up to two
monitor Token-Ring ports; you can specify a dedicated monitor Token-Ring port
for traffic received on the monitored port and a different monitor port for traffic
transmitted on the monitored port. You must use two monitor ports if the monitored
port operates in FDX mode.
Note that passive monitoring only is available for Token-Ring ports.