Mirror Port Commands
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4
Mirror Port CommandsThis section describes how to mirror traffic from a source port to a target port.
port monitor
This command configures a mirror session. Use the no form to clear a mirror
session.
Syntax
port monitor interface [rx | tx]
no port monitor interface
•interface - ethernet unit/port (source port)
-unit - Stack unit. (Range: 1)
-port - Port number. (Range: 1-28)
•rx - Mirror received packets.
•tx - Mirror transmitted packets.
Default Setting
No mirror session is defined.
Command Mode
Interface Configuration (Ethernet, destination port)
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.
• All mirror sessions must share the same destination port.
• When mirroring port traffic, the target port must be included in the same VLA N
as the source port
Table4-49 Mirror Port Com mands
Command Function Mode Page
port monitor Configures a mirror session IC 4-177
show port monitor Shows the configuration for a mirror port PE 4-178