Configuring Mac Address Table Management; Configuration Task List - 3Com 4200G 12-Port Configuration Manual

Aging timer only takes effect on dynamic MAC address entries.
Entries in a MAC address table
Entries in a MAC address table fall into the following categories according to their characteristics and
configuration methods:
Static MAC address entry: Also known as permanent MAC address entry. This type of MAC
address entries are added/removed manually and can not age out by themselves. Using static
MAC address entries can reduce broadcast packets remarkably and are suitable for networks
where network devices seldom change.
Dynamic MAC address entry: This type of MAC address entries age out after the configured aging
time. They are generated by the MAC address learning mechanism or configured manually.
Blackhole MAC address entry: This type of MAC address entries are configured manually. A switch
discards the packets destined for or originated from the MAC addresses contained in blackhole
MAC address entries.
Table 1-1 lists the different types of MAC address entries and their characteristics.
Table 1-1 Characteristics of different types of MAC address entries
MAC address entry
Static MAC address
entry
Dynamic MAC address
entry
Blackhole MAC
address entry

Configuring MAC Address Table Management

Configuration Task List

Table 1-2 Configure MAC address table management
Configuring a MAC Address Entry
Setting the Aging Time of MAC Address Entries
Setting the Maximum Number of MAC
Addresses a Port Can Learn
Configuration
method
Manually configured
Manually configured or
generated by MAC
address learning
mechanism
Manually configured
Task
Aging time
Unavailable
Available
Unavailable
Required
Optional
Optional
1-4
Reserved or not at
reboot (if the
configuration is
saved)
Yes
No
Yes
Remarks