Allied-telesis AT-S60 Manual do Utilizador descarregar pdf (Página 104)

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101

AT-S60 Management Software User’s Guide

Section II: Local and Telnet Management 103

A dynamic MAC address learned on a port operating in the Limited

security mode is never timed out from the MAC address table, even

when the corresponding end node is inactive. Once the port has learned

its maximum number of addresses, it does not learn any new addresses,

even when end nodes are inactive.

Static MAC addresses are retained by the port and are not included in

the count of maximum dynamic addresses. You can add more static

MAC addresses to a port even if the port has already learned its

maximum number of dynamic MAC addresses.

Secured The Secured security level instructs a port to forward frames using only

static MAC address. The port does not learn any dynamic MAC addresses

and deletes any dynamic addressees that it has already learned. Only

those end nodes whose MAC addresses have been entered as static

addresses can forward frames through the port.

You must enter, either before or after you activate this security level, the

static MAC addresses of the end nodes that are allowed to forward

frames through the port.

Locked The Lock security level causes a port to immediately stop learning new

dynamic MAC addresses. Frames are forwarded using the dynamic MAC

addresses that the port has already learned and any static MAC

addresses assigned to the port.

Dynamic MAC addresses learned by the port prior to the activation of

this security level are never timed out from the MAC address table, even

when the corresponding end nodes are inactive. However, the port does

not learn new dynamic addresses.

You can add new static MAC addresses to a port operating with this

security level.

Note

For background information on MAC addresses and the MAC aging

time, refer to MAC Address Overview on page 308.

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