Disabling the MAC address learning function when configuring remote mirroring on S series switches

For S series switches, after Layer 2 remote port mirroring is configured, mirrored packets are forwarded to intermediate devices through a VLAN and then to the monitoring device by following the general Layer 2 forwarding process. The mirrored packets cannot be forwarded according to the MAC address tables on the intermediate devices because their destination MAC addresses are the same as those of the original packets but not the MAC address of the monitoring device. The mirrored packets must be treated as unknown unicast packets and broadcast to all interfaces in the VLAN. The mirrored packets can be forwarded to the monitoring device in broadcast mode as long as the MAC address table of the VLAN contains no entry matching the destination MAC addresses of the mirrored packets.
If the mirrored packets cannot reach the monitoring device, the MAC address tables on the intermediate devices may contain entries matching the destination MAC addresses of the mirrored packets. If this occurs, the mirrored packets are forwarded according to the MAC address tables and cannot reach the monitoring device. In this case, you need to run the mac-address learning disable command in the VLAN view to disable the MAC address learning function.

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