M
IRROR
P
ORT
C
OMMANDS
3-145
Command Usage
• You can mirror traffic from any source port to a destination port for
real-time analysis. You can then attach a logic analyzer or RMON
probe to the destination port and study the traffic crossing the source
port in a completely unobtrusive manner.
• The destination port is set by specifying an Ethernet interface.
• The mirror port and monitor port speeds should match, otherwise
traffic may be dropped from the monitor port.
Example
The following example configures the switch to mirror all packets from
port 6 to port 11:
show port monitor
Use this command to display mirror information.
Syntax
show port monitor [interface]
interface - ethernet unit/port (source port)
• unit - Switch (unit 1).
• port - Port number.
Default Setting
Shows all sessions.
Command Mode
Privileged Exec
Command Usage
This command displays the currently configured source port,
destination port, and mirror mode (i.e., RX, TX, RX/TX).
Console(config)#interface ethernet 1/11
Console(config-if)#port monitor ethernet 1/6 both
Console(config-if)#
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