Planet IGS-5225 Series, Руководство пользователя

Страница: 353 / 463

User’s Manual of IGS-5225 series
353
taken.
The switch is "born" with a total number of MAC addresses from which all ports
draw whenever a new MAC address is seen on a Port Security-enabled port.
Since all ports draw from the same pool, it may happen that a configured
maximum cannot be granted, if the remaining ports have already used all
available MAC addresses.
•
Violation Mode If Limit is reached, the switch can take one of the following actions:
Protect: Do not allow more than Limit MAC addresses on the port, but take no
further action.
Restrict: If Limit is reached, subsequent MAC addresses on the port will be
counted and marked as violating. Such MAC addreses are removed from the
MAC table when the hold time expires. At most Violation Limit MAC addresses
can be marked as violating at any given time.
Shutdown: If Limit is reached, one additional MAC address will cause the port to
be shut down. This implies that all secured MAC addresses be removed from the
port, and no new addresses be learned. There are three ways to re-open the
port:
1) In the "Configuration
→
Ports" page's "Configured" column, first disable the
port, then restore the original mode.
2) Make a Port Security configuration change on the port.
3) Boot the switch.
•
Violation Limit

The maximum number of MAC addresses that can be marked as violating on
this port. This number cannot exceed 1024. Default is 4. It is only used
when
Violation Mode is
Restrict
.
•
State This column shows the current state of the port as seen from the Limit Control's
point of view. The state takes one of four values:

Disabled : Limit Control is either globally disabled or disabled on the port.

Ready : The limit is not yet reached. This can be shown for all actions.

Limit Reached : Indicates that the limit is reached on this port. This state can
only be shown if Action is set to None or Trap .
Shutdown : Indicates that the port is shut down by the Limit Control module. This
state can only be shown if Action is set to Shutdown or Trap & Shutdown .