Reference Guide

Port Monitoring | 1151
Command Modes
MONITOR SESSION (conf-mon-sess-session-ID)
Command
History
Example
Figure 44-5. Command Example: Configuring a Source Port
Usage
Information
You can configure physical ports, port-channels, and VLANs as sources in remote port mirroring and
use them in the same source session. You can use both Layer 2 (configured with the switchport
command) and Layer 3 ports as source ports.
In remote port mirroring:
• Up to 4 source sessions are supported on a switch.
• Up to 128 source ports are supported in a source session.
When you configure a port channel or VLAN in a source session, all ports in the port channel or
VLAN are used as source ports, up to a maximum of 128 source ports.
You can configure trunk ports and access ports as source ports.
You can configure trunk ports and non-trunk ports as source ports in a remote-port mirroring session.
You can use the default VLAN and native VLANs as a source VLAN. You cannot configure the
dedicated VLAN used to transport mirrored traffic as a source VLAN.
A destination port for remote port mirroring cannot be used as a source port, including the session in
which the port functions as the destination port. A source port channel or source VLAN, which has a
member port that is configured as a destination port, cannot be used as a source port channel or source
VLAN.
You can use ACLs on a source port. In a flow-based source session, packets sent from the RPM are not
monitored.
Rate-limiting tagged-VLAN egress traffic on a source port is supported.
To delete one or more monitored ports from a source session, enter the complete no source (remote
port mirroring) command.
The dedicated L2 VLAN used for remote port mirroring is configured with the mode
remote-port-mirroring command. To change the reserved VLAN used in a source session, you can
remove the current VLAN by entering the no source destination vlan vlan-id command. Then re-enter
the complete source (remote port mirroring) command as described above to configure a new reserved
VLAN for the source session.
Version 8.4.1.2 Introduced on the E-Series ExaScale.
FTOS(conf-mon-sess-11)#source gigabitethernet 10/0 destination remote-vlan 2
direction rx
FTOS(conf-mon-sess-11)#