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Chapter 11 Commands for MAC
Address Table Configuration
11.1 Commands for MAC Address Table Configuration
11.1.1 mac-address-table aging-time
Command: mac-address-table aging-time <0 | aging-time>
no mac-address-table aging-time
Function: Sets the aging-time for the dynamic entries of MAC address table.
Parameter: <aging-time> is the aging-time seconds, range form 10 to 1000000; 0 to
disable aging.
Command Mode: Global Mode.
Default: Default aging-time is 300 seconds.
Usage Guide: The user had better set the aging-time according to the network condition.
A too small aging-time will affect the performance of the switch by causing too much
broadcast, while a too large aging-time will make the unused entries stay too long in the
address table.
The dynamic address does aging when the aging-time is set to 0.
Example: Set the aging-time to 600 seconds.
Switch (config)#mac-address-table aging-time 600
11.1.2 mac-address-table static|blackhole
Command: mac-address-table {static | blackhole} address <mac-addr> vlan
<vlan-id> [interface ethernet <interface-name>] | [source | destination | both]
no mac-address-table {static | blackhole | dynamic} [address
<mac-addr>] [vlan <vlan-id>] [interface ethernet <interface-name>]
Function: Add or modify static address entries and filter address entries. The no
command deletes the two entries.
Parameter: static is the static entries; blackhole is filter entries, which is for discarding
frames from specific MAC address, it can filter source address, destination address or the
both. When choose the filter entries, blackhole address can‘t based on port, and not
configure to interface; dynamic is dynamic address entries;<mac-addr> MAC address to
be added or deleted;<interface-name> name of the port transmitting the MAC data
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