Remote Port Mirroring Example - Dell Z9500 Configuration Manual

Remote port mirroring helps network administrators monitor and analyze traffic to troubleshoot network problems in a time-
saving and efficient way.
In a remote-port mirroring session, monitored traffic is tagged with a VLAN ID and switched on a user-defined, non-routable
L2 VLAN. The VLAN is reserved in the network to carry only mirrored traffic, which is forwarded on all egress ports of the VLAN.
Each intermediate switch that participates in the transport of mirrored traffic must be configured with the reserved L2 VLAN.
Remote port monitoring supports mirroring sessions in which multiple source and destination ports are distributed across
multiple switches

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 105. Remote Port Mirroring
Port Monitoring 635