7.11 MAC Table
Switching of frames is based upon the DMAC address contained in the frame.
The switch builds up a table that maps MAC addresses to switch ports for
knowing which ports the frames should go to ( based upon the DMAC address in
the frame ). This table contains both static and dynamic entries. The static
entries are configured by the network administrator if the administrator wants to
do a fixed mapping between the DMAC address and switch ports.
The frames also contain a MAC address ( SMAC address ), which shows the
MAC address of the equipment sending the frame. The SMAC address is used
by the switch to automatically update the MAC table with these dynamic MAC
addresses. Dynamic entries are removed from the MAC table if no frame with
the corresponding SMAC address have been seen after a configurable age time.
Set timeouts for entries in the dynamic MAC Table and configure the static MAC
table here.
Configuration by Web
:
[Configuration] -> [MAC Table]
Click “
?
” at this web page to get details of the settings.
Configuration by Command
:
Aging Configuration :
(config)# mac address-table aging-time <0,10-1000000>
(config)# no mac address-table
Static MAC Table Configuration :
(config)# mac address-table static <mac_addr> vlan <vlan_id> interface
<port_type_list>
(config)# no mac address-table static <mac_addr> vlan <vlan_id> interface
<port_type_list>
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