Alcatel-Lucent 6850-48 Network Guide

Port Mirroring

Diagnosing Switch Problems

page 45-20

OmniSwitch AOS Release 6 Network Configuration Guide

Note. You can modify the parameters of a port mirroring session that has been disabled.

Keep in mind that the port mirroring session configuration remains valid, even though port mirroring has 
been turned off. Note that the port mirroring session identifier and slot/port locations of the designated 
interfaces must always be specified.

Note. Note that the port mirroring session identifier and slot/port locations of the designated interfaces 
must always be specified.

By default, port mirroring sessions are bidirectional. To configure the direction of a port mirroring session 
between a mirrored port and a mirroring port, use the 

CLI command 

by entering port mirroring, followed by the port mirroring session ID number, the source and destination 
slot/ports, and bidirectional, inport, or outport.

Note. Optionally, you can also specify the optional unblocked VLAN ID number and either enable or 
disable on the same command line.

In this example, the command specifies port mirroring session 6, with the mirrored (active) port located in 
slot 2/port 3 and the mirroring port located in slot 6/port 4. The mirroring direction is unidirectional and 
inward bound:

-> port mirroring 6 source 2/3 destination 6/4 inport

In this example, the command specifies port mirroring session 6, with the mirrored (active) port located in 
slot 2/port 3, and the mirroring port located in slot 6/port 4. The mirroring direction is unidirectional and 
outward bound:

-> port mirroring 6 source 2/3 destination 6/4 outport

You can use the bidirectional keyword to restore a mirroring session to its default bidirectional configura-
tion. For example:

-> port mirroring 6 source 2/3 destination 6/4 bidirectional

Note. Note that the port mirroring session identifier and slot/port locations of the designated interfaces 
must always be specified.

Once a port mirroring session configuration has been created, this command is useful for enabling or 
disabling it (turning port mirroring on or off) without having to re-enter the source and destination ports 
and unblocked VLAN ID command line parameters.