Quick Reference Guide

96 | System Configuration Commands
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To remove the destination port, use no monitor session 1 destination interface.
To remove a source port, use no monitor session 1 source interface unit/slot/port.
In other words, removing the source interface requires specifying the port to be removed, but removing
the destination port does not require specifying the destination port, since there can be only one
destination port.
Default
None
Mode
Global Config
Usage
Information
In an S-Series stack, destination and source ports can be on separate stack members. A stack has a limit
of one port mirroring session and one destination port. Remove an existing source or destination port
before replacing it with another. For more on configuring port monitoring (port mirroring), see the Port
Mirroring chapter of the SFTOS Configuration Guide.
monitor session 1 mode
This command sets the monitor session (port monitoring) mode to enabled. The probe and monitored
ports must be configured before port monitoring can be enabled. When enabled, the probe port
monitors all traffic received and transmitted on the physical monitored port. It is not necessary to
disable port monitoring before modifying the probe and monitored ports.
A session is operationally active if and only if both a destination port and at least one source port is
configured. If neither is true, the session is inactive.
A port configured as a destination port acts as a mirroring port when the session is operationally active.
If it is not, the port acts as a normal port and participates in all normal operation with respect to
transmitting traffic.
Syntax
[no] monitor session 1 mode
The no version of this command sets the monitor session (port monitoring) mode to disabled.
Default
disabled
Mode
Global Config
Parameters
destination interface
unit/slot/port
Specify the probe port (target port). The probe port cannot be a VLAN
member.
source interface unit/
slot/port
Specify the source interface (mirrored port). The port can be a part of any
VLAN.
mode
Enable/disable the port mirroring session. See monitor session 1 mode on
page 96.
Related
Commands
monitor session 1 mode Sets the monitor session (port monitoring) mode to enabled.
mtu (port) Removes the destination port and all source ports from the mirroring
configuration.
show monitor session Shows the mirroring configuration.