Mac Address Classification; Mac Address Table Establishment And Deletion - Zte ZXR10 5900E Series User Manual

ZXR10 5900E Series User Manual (Ethernet Switching Volume)
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� srF: Whether to drop frames from the source MAC address.
� dsF: Whether to drop frames from the destination MAC ad-
dress.
� Time: the time of MAC address on the switch. Desiganated by
day:hour:minute:second.
During L2 forwarding, the switch checks its MAC address table for
the destination MAC address of the received frame, and then for-
ward data to the corresponding port.

MAC Address Classification

ZXR10 5900E MAC address is divided into the following types:
1. Dynamic MAC address
Dynamic MAC addresses are learned by the switch from data
frames it receives, and are deleted when the aging time is due.
When the device connects to another port on the switch, the
corresponding mapping relationship between the MAC addtess
and port number also changes in the MAC address table. Dy-
namic MAC addresses are lost when the switch is powered off
and must be learned again when the switch is rebooted.
2. Static MAC address
Static MAC addresses are configured manually and will never
age. The mapping relationship between MAC address and port
number in the MAC address table remains unchanged despite
of changes of the connecting port between switch and device.
Static MAC addresses are also lost when the switch is powered
off and must be configured again when the switch is rebooted.
3. Permanent MAC address
Permanent MAC addresses are also configured manually. The
mapping relationship between MAC address and port number in
the MAC address table remains unchanged despite of changes
of the connecting port between switch and device. Permanent
MAC addresses will not disappear when the switch is powered
off.
MAC Address Table Establishment
and Deletion
The MAC address table of a switch is null initially. It is created for
fast forwarding. As the size of the MAC address table is limited and
network device changes are frequent, invalid MAC address table
entries should be deleted from the switch in time.
1. Dynamic Learning
Dynamic MAC addresses in the MAC address table are learned
by the switch. The procedure of switch learning MAC address
is as follows: