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 106. 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:
• You can configure any switch in the network with source ports and destination ports, and allow it to
function in an intermediate transport session for a reserved VLAN at the same time for multiple remote-
port mirroring sessions. You can enable and disable individual mirroring sessions.
• BPDU monitoring is not required to use remote port mirroring.
• A remote port mirroring session mirrors monitored traffic by prefixing the reserved VLAN tag to
monitored packets so that they are copied to the reserve VLAN.
Port Monitoring 798
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