H3C Technologies H3C WX3000 Series Unified Switches - Manual (Page 385)

39-3
Table 39-1 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.
MAC-Based Mirroring
With MAC-based mirroring configured, a device mirrors packets matching the specified MAC address to
the destination port, including:
z
Packets with the source MAC address matching the specified MAC address.
z
Packets with the destination MAC address matching the specified MAC address.
Compared with port mirroring, MAC-based mirroring is more precise and it can be used to monitor
packets of specific device in the network.
VLAN-Based Mirroring
With VLAN-based mirroring configured, a device mirrors packets received on all ports in the specified
VLAN to the destination port.
Compared with port mirroring, VLAN-based mirroring is more extensive and it can be used to monitor
packets of a specific VLAN or VLANs in the network.