MAC Address Mirroring
MAC address mirroring copies traffic with a specified source or destination MAC address in a specified VLAN to an observing port. MAC address mirroring is a more accurate mirroring mode, allowing you to monitor packets of a specified device for analysis. In Figure 1, the switch copies only the packets sent from HostA to the monitoring device.
Similar to port mirroring, traffic mirroring is classified into local traffic mirroring and Layer 2 remote traffic mirroring depending on the observing port type.
Be aware of the following:
- The switch supports only inbound MAC address mirroring. That is, the switch can copy only the packets with a specified source or destination MAC address and are received in a specified VLAN to observing ports.
- In Layer 2 remote MAC address mirroring, the VLAN to which the original traffic belongs must be different from the Layer 2 remote mirroring VLAN used on the intermediate Layer 2 network to forward mirrored traffic.
