Allied Telesis AT-TS95TR, Руководство по эксплуатации, Страница: 19 / 114

AT-S7/AT-S9 Operations Manual
7
If a packet’s MAC address is not already stored in the Bridge Address Table,
the switch adds the learned address, the associated port number and a timer
value that indicates the age of the dynamic Bridge Address Table entry.
Consequently, the switch knows the address and associated port number the
next time it sees that address. By using the information stored in the Bridge
Address Table, the switch is able to quickly forward each packet to the
correct port.
The switch learns addresses from all packets. When devices are added to the
network, removed from it, or relocated, you do not have to reconfigure your
switch. Your switch automatically learns all addresses.
An address stored in the Bridge Address Table is discarded if there is no
activity from that address after a configured length of time (the default is five
minutes). This aging process ensures that the Bridge Address Table is not
only continually updated but only includes current entries.
Each entry which is automatically entered (a dynamic entry) includes:
❑
An Ethernet MAC address
❑
The port number of the LAN on which the address resides
❑
The age of the entry