User's Manual

P ORT M IRRORING
3-39
Port Mirroring
You can mirror traffic from any source port to a target port for real-time
analysis. You can then attach a logic analyzer or RMON probe to the
target port and study the traffic crossing the source port in a completely
unobtrusive manner.
Command Usage
• Monitor port speed should match or exceed source port speed,
otherwise traffic may be dropped from the monitor port.
• All mirror sessions must share the same destination port.
• When mirroring port traffic, the target port must be included in the same
VLAN as the source port.
Field Attributes
• Roving Analysis State – Enables / disables port mirroring.
• Analysis Port – The port that mirrors traffic from the source port.
• Monitor Ports – The ports whose traffic will be monitored.
• Monitor Rx – Mirrors receive traffic.
• Monitor Tx – Mirrors transmit traffic.
Web – Click Administrator=>Port Sniffer. Specify the analysis port, the
monitor ports and traffic types to mirror, enable the Roving Analysis State,
and then click Apply.