Reference Guide

1144 | Port Monitoring
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mode remote-port-mirroring
e
x
Configure a L2 VLAN as the VLAN used to transport mirrored traffic in a remote-port mirroring
session.
Syntax
mode remote-port-mirroring
Defaults
No default values or behaviors
Command Modes
VLAN INTERFACE
Command
History
Example
Figure 44-1. Command Example: mode remote-port-mirroring
Usage
Information
A remote port mirroring session mirrors Layer 2 and Layer 3 traffic by prefixing the reserved VLAN
tag to monitored packets so that they are copied to the reserve VLAN.
Mirrored traffic is transported across the network using 802.1Q-in-802.1Q tunneling. The source
address, destination address and original VLAN ID of the mirrored packet are preserved with the
tagged VLAN header. Untagged source packets are tagged with the reserved VLAN ID.
There is no restriction on the VLAN IDs used for the reserved remote-monitoring VLAN. Valid VLAN
IDs are 1 to 4094. The default VLAN ID is not supported.
The reserved VLAN for remote port mirroring can be automatically configured in intermediate
switches by using GVRP.
MAC address learning in the reserved VLAN is automatically disabled.
To change the reserved VLAN used in a source session, you can remove the current VLAN by entering
the complete no source destination vlan vlan-id command. Then re-enter the source (remote port
mirroring) command to configure a new reserved VLAN for the source session.
Related
Commands
Version 8.4.1.2 Introduced on the E-Series ExaScale.
FTOS(conf)# interface vlan 10
FTOS(conf-if-vlan)# mode remote-port-mirroring
interface vlan Configure a VLAN.
show monitor session Display the monitor session.
tagged destination Configure a tagged port to carry mirrored traffic in a reserved
VLAN.