1-3
Table 1-1 Ports involved in the mirroring operation
Switch Ports involved Function
Source port
Port monitored. It copies
packets to the reflector port
through local port mirroring.
There can be more than one
source port.
Reflector port
Receives packets from the
source port and broadcasts
the packets in the
remote-probe VLAN.
Source switch
Trunk port
Sends mirrored packets to
the intermediate switch or
the destination switch.
Intermediate switch
Trunk port
Sends mirrored packets to
the destination switch.
Two trunk ports are
necessary for the
intermediate switch to
connect the devices at the
source switch side and the
destination switch side.
Trunk port
Receives remote mirrored
packets.
Destination switch
Destination port
Receives packets
forwarded from the trunk
port and transmits the
packets to the data
detection device.
z Do not configure a default VLAN, a management VLAN, or a dynamic VLAN as the
remote-probe VLAN.
z Configure all ports connecting the devices in the remote-probe VLAN as trunk ports,
and ensure the Layer 2 connectivity from the source switch to the destination switch
over the remote-probe VLAN.
z Do not configure a Layer 3 interface for the remote-probe VLAN, run other protocol
packets, or carry other service packets on the remote-prove VLAN and do not use the
remote-prove VLAN as the voice VLAN and protocol VLAN; otherwise, remote port
mirroring may be affected.
Mirroring Configuration
Complete the following tasks to configure mirroring:
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