12-3. Switched Port Analyzer
Switched Port Analyzer (SPAN) mirrors traffic from one or more source switch ports or a source VLAN to a destination port. This allows a monitoring device such as a network analyzer to be attached to the destination port for capturing traffic.
SPAN source and destination ports must reside on the same physical switch.
Multiple SPAN sessions can be configured to provide several simultaneous monitors.
Remote SPAN (RSPAN) provides traffic mirroring from a source on one switch to a destination on one or more remote switches.
RSPAN is carried from source to destination over a special RSPAN VLAN.
RSPAN is only available on the Catalyst 4000 and 6000 switch families.
NOTE
What happens if a speed mismatch occurs between the SPAN ...
Get Cisco® Field Manual: Catalyst® Switch Configuration now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
