Figure 45 Local port mirroring implementation
As shown in Figure 45, packets of the mirroring port are mirrored to the monitor port for the data
monitoring device to analyze.
Layer 2 remote port mirroring
Layer 2 remote port mirroring uses cooperation between a remote source mirroring group and a remote
destination mirroring group, as shown in Figure 46. Through this cooperation, the data monitoring
device connected to the monitor port on the destination device can monitor and analyze packets passing
through the mirroring ports on the source device.
Figure 46 Layer 2 remote port mirroring implementation
On the network shown in Figure 46,
The source device does the following:
1. Copies the packets received on the source port Ethernet 1/0/1 to the reflector port Ethernet
1/0/3.
2. Broadcasts the packets in the remote probe VLAN through Ethernet 1/0/3.
3. Transmits the packets to the destination device via the intermediate device in the VLAN.
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