OPTICAL SYSTEMS DESIGN
DOC ID: 10118101
OSD2512 OPERATOR MANUAL
PAGE 91
Limit
The maximum number of MAC addresses that can be secured on this port. This number
cannot exceed 1024. If the limit is exceeded, the corresponding action is 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.
Action
If Limit is reached, the switch can take one of the following actions:
None
: Do not allow more than Limit MAC addresses on the port, but take no further action.
Trap
: If Limit + 1 MAC addresses is seen on the port, send an SNMP trap. If Aging is
disabled, only one SNMP trap will be sent, but with Aging enabled, new SNMP traps will be
sent every time the limit gets exceeded.
Shutdown
: If Limit + 1 MAC addresses is seen on the port, shut down the port. This implies
that all secured MAC addresses will be removed from the port, and no new address will be
learned. Even if the link is physically disconnected and reconnected on the port (by
disconnecting the cable), the port will remain shut down. There are three ways to re-open the
port:
1) Boot the switch,
2) Disable and re-enable Limit Control on the port or the switch,
3) Click the Reopen button.
Trap & Shutdown
: If Limit + 1 MAC addresses is seen on the port, both the "Trap" and
the "Shutdown" actions described above will be taken.
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
.
Re-open Button
If a port is shutdown by this module, you may reopen it by clicking this button, which will
only be enabled if this is the case. For other methods, refer to
Shutdown
in the Action
section.
Note that clicking the reopen button causes the page to be refreshed, so non-committed
changes will be lost.
Buttons
: Click to save changes.
: Click to undo any changes made locally and revert to previously saved
values.
:
Click to refresh the page. Any changes made locally will be undone.
