1-3
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Source device
The source device is the device where the mirroring ports are located. On it, you must create a remote
source mirroring group to hold the mirroring ports.
The source device copies the packets passing through the mirroring ports, broadcasts the packets in
the remote probe VLAN for remote mirroring, and transmits the packets to the next device, which could
be an intermediate device (if any) or the destination device.
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Intermediate device
Intermediate devices are devices located in between the source device and the destination device.
An intermediate device forwards mirrored packets to the next intermediate device (if any) or the
destination device.
You must ensure that the source device and the destination device can communicate at Layer 2 in the
remote probe VLAN.
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Destination device
The destination device is the device where the monitor port is located. On it, you must create the
remote destination mirroring group.
When receiving a packet, the destination device compares the VLAN ID carried in the packet with the
ID of the probe VLAN configured in the remote destination mirroring group. If they are the same, the
device forwards the packet to the monitoring device through the monitor port.
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Because packets of the mirroring ports are broadcast in the remote probe VLAN created on the
source device, you can deliver the local port mirroring function by adding the other ports on the
source device to the remote probe VLAN.
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To monitor both the received and sent packets of a port in a mirroring group, you must disable
MAC address learning for the remote probe VLAN on the intermediate devices. Otherwise, port
mirroring may not be able to function normally.
For a mirrored packet to successfully arrive at the remote destination device, you need to ensure that
the VLAN ID carried in the packet is correct (that is, the same as the probe VLAN ID). If the VLAN is
removed or the VLAN ID is changed, the remote port mirroring configuration becomes invalid.
