Huawei quidway s3526 series Getting Started page 740

Command Manual - System Management
Quidway S3500 Series Ethernet Switches
Description
Using mac-address timer command, you can configure the aging time of the Layer-2
dynamic address table entry. Using undo mac-address timer command, you can
restore the default value.
Too long or too short aging time set by subscribers will cause the problem that the
Ethernet switch broadcasts a great mount of data packets without MAC addresses,
which will affect the switch operation performance.
If aging time is set too long, the Ethernet switch will store a great number of out-of-date
MAC address tables. This will consume MAC address table resources and the switch
will not be able to update MAC address table according to the network change.
If aging time is set too short, the Ethernet switch may delete valid MAC address table.
Example
# Configure the entry aging time of Layer-2 dynamic address table to be 500 seconds.
[Quidway] mac-address timer aging 500
Chapter 2 MAC Address Table Management Commands
Huawei Technologies Proprietary
2-5