Are the switch MAC address entries matching destination MAC addresses of packets aged out

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In V100R005 and earlier versions, by default, MAC address entries are aged out no matter whether the entries match destination MAC addresses of packets. To resolve network problems, modify the V100R005SPH007 patch as follows: The aging time is recalculated for the MAC address entries to be aged out when the entries match destination MAC addresses of packets. In V100R006 and later versions, by default, the aging time is recalculated for the MAC address entries to be aged out when the entries match destination MAC addresses of packets.

NOTE:
This command is used only when one-way services are deployed on the network. Packets of two-way services are transmitted bidirectionally; therefore, dynamic MAC address entries match both the source MAC addresses and destination MAC addresses of packets and are not aged.
When a user uses one-way services such as the on-demand service, packets are transmitted unidirectionally from the server to the user terminal. When the user terminal is shut down, the server still sends one-way packets. Therefore, the destination MAC address of the packets matches the MAC address entry and the MAC address is never aged out.

Other related questions:
Remove IP address conflict on S series switch
In an ARP entry on an S series switch, except S1700, when one IP address matches multiple MAC addresses: If the switch functions as a DHCP server to assign IP addresses to clients, configure IP address conflict probing on the switch. If the switch functions as a gateway and IP addresses are statically assigned to clients, determine the clients using conflicting IP addresses and change the IP addresses for them manually.

Which MAC addresses on the AR router do not age
The static and blackhole MAC addresses of the AR router do not age.

How to check and configure the MAC address aging time on an S series switch
For S series switches (except the S1700), configure the MAC address aging time as follows:
[HUAWEI] mac-address aging-time 500 //Set the MAC address aging time to 500s.

Check the MAC address aging time as follows:
<HUAWEI> display mac-address aging-time
  Aging time:300 second(s)     //The current aging time is 300s.

Which MAC addresses do not age
Static media access control (MAC) addresses and blackhole MAC addresses.

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