Users Guide

Remote Port Mirroring Example
Remote port mirroring uses the analyzers shown in the aggregation network in Site A.
The VLAN traffic on monitored links from the access network is tagged and assigned to a dedicated L2 VLAN. Monitored links are
configured in two source sessions shown with orange and green circles. Each source session uses a separate reserved VLAN to transmit
mirrored packets (mirrored source-session traffic is shown with an orange or green circle with a blue border).
The reserved VLANs transport the mirrored traffic in sessions (blue pipes) to the destination analyzers in the local network. Two
destination sessions are shown: one for the reserved VLAN that transports orange-circle traffic; one for the reserved VLAN that
transports green-circle traffic.
Figure 116. Remote Port Mirroring
Configuring Remote Port Mirroring
Remote port mirroring requires a source session (monitored ports on different source switches), a reserved tagged VLAN for transporting
mirrored traffic (configured on source, intermediate, and destination switches), and a destination session (destination ports connected to
analyzers on destination switches).
Configuration Notes
When you configure remote port mirroring, the following conditions apply:
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Port Monitoring