Allied Telesis AT-S26 - Manual (Page 77)

AT-S26 Version 2.0.1 User’s Guide
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Limited
This selection activates a limited version of port security. With this
level selected, the switch will continue to learn MAC addresses for
each port up to a user defined maximum number. Once the
maximum number has been reached on a port, any frames received
on the port from a source with a new MAC addresses will be
discarded.
Note
Selecting this security level deletes all static MAC addresses. You
must reenter the static addresses. All static MAC addresses are
included in the count of maximum addresses that can be learned by
a port.
If you activate this security level, select the Config MAC address limit
per port option to display a list of the ports on the switch. In the list,
select a port and specify the maximum number of MAC addresses
that you want the port to be able to learn. The permitted range is 0 to
255. Specifying 0 (zero) means that the port will not stop learning
addresses. The default is 0.
Selecting this security level also displays the following prompts:
Figure 29 Port Security Prompts
These prompts allow you to control how the switch will respond
when a port exceeds the specified number of MAC addresses. You can
instruct the switch to send an SNMP trap to the management station,
disable the port, or both.
Secure
This option causes the switch to immediately stop learning new MAC
addresses on all or selected ports. Any frames received on a port from
a source with a new MAC address will be discarded. Existing static
MAC addresses are retained and are used in determining which
addresses are accepted by a port. However, you cannot add new
static addresses to ports with this level of security.
Intruder Protection:
Transmit an SNMP trap if an intruder is detected
> No SNMP trap if an intruder is detected
Disable the port if an intruder is detected
> Port state is unchanged if an intruder is detected
Return to System Configuration Menu ...