Installation manual

Operation Manual - System Management
Quidway S3000-EI Series Ethernet Switches Chapter 2 MAC Address Table Management
Huawei Technologies Proprietary
2-3
If aging time is set too long, the Ethernet switch will store a great number of out-of-date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.
You can use the following commands to set the MAC address aging time for the
system.
Perform the following configuration in system view.
Table 2-2 Set the MAC address aging time for the system
Operation Command
Set the dynamic MAC address aging
time
mac-address timer { aging age |
no-aging }
Restore the default MAC address
aging time
undo mac-address timer aging
In addition, this command takes effect on all the ports. However the address aging only
functions on the dynamic addresses (the learned or configured as age entries by the
user).
By default, the aging-time is 300 seconds. With the no-aging parameter, the command
performs no aging on the MAC address entries.
2.2.3 Set the Max Count of MAC Address Learned by a Port
With the address learning function, an Ethernet switch can learn new MAC addresses.
After received a packet destined some already learned MAC address, the switch will
forward it directly with the hardware, instead of broadcasting. But Too many MAC
address items learned by a port will affect the switch operation performance.
User can control the MAC address items learned by a port through setting the max
count of MAC address learned by a port. If user set the max count value of a port as
count, the port will not learn new MAC address items when the count of MAC address
items reaches count.
You can use the following commands to set the max count of MAC address learned by
a port.
Perform the following configuration in Ethernet port view.
Table 2-3 Set the Max Count of MAC Address Learned by a Port
Operation Command
Set the Max Count of MAC Address Learned by a
Port
mac-address
max-mac-count count