Optical Systems Design OSD2524, User Manual

Page: 90 / 402

OPTICAL SYSTEMS DESIGN
DOC ID: 10120001
OSD2524 OPERATOR MANUAL
PAGE 90
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.
Network Access Server Configuration
Configuration
→
Security
→
Network
→
NAS