Operation Manual – Mirroring
Quidway S5600 Series Ethernet Switches-Release 1510 Chapter 1 Mirroring Configuration
Huawei Technologies Proprietary
1-2
Source
Switch
Intermediate Switch
Destination
Switch
Reflector port
Source Port
Trunk port
Destination port
Remote-probe VLAN
Source
Switch
Intermediate Switch
Destination
Switch
Reflector port
Source Port
Trunk port
Destination port
Remote-probe VLAN
Figure 1-2 RSPAN application
There are three types of switches with the RSPAN enabled.
z Source switch: The switch to which the monitored port belongs. Through Layer 2
forwarding, it sends traffics to be mirrored to an
intermediate switch or destination
switch over the
remote-probe VLAN.
z Intermediate switch: Switches between the source switch and destination switch
on the network. An intermediate switch forwards mirrored flows to the next
intermediate switch or the destination switch. Circumstances can occur where no
intermediate switch is present, if a direct connection exists between the source
and destination switches.
z Destination switch: The switch to which the destination port for remote mirroring
belongs. It forwards mirrored flows it received from the remote-probe VLAN to the
monitoring device through the destination port.
Table 1-1 describes how the ports on various switches are involved in the mirroring
operation.
Table 1-1 Ports involved in the mirroring operation
Switch Ports involved Function
Source port
Port to be mirrored; copy user data packets
to the specified reflector port through local
port mirroring. There can be more than one
source port.
Reflector port
Receive user data packets that are
mirrored on a local port.
Source switch
Trunk port
Send mirrored packets to the intermediate
switch or the destination switch.
Intermediate
switch
Trunk port
Send mirrored packets to the destination
switch.
Two Trunk ports are necessary for the
intermediate switch to be connected to
devices that are connected to the source
switch and the destination switch.
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