Mac-Address Timer - Huawei Quidway S2000 Series Command Manual

Command Manual - System Management
Quidway S2000 Series Ethernet Switches

2.1.5 mac-address timer

Syntax
mac-address timer { aging age | no-aging }
undo mac-address timer aging
View
System view
Parameter
aging age: Specifies the aging time (measured in seconds) of the Layer-2 dynamic
address table entry, ranging from 10 to 1000000. By default, the aging time is 300
seconds.
no-aging : No aging time.
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If aging time is set too long, the Ethernet switch will store a great number of out-of-date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
2-5