317
Mode
The Configuration All with available options will assign to whole ports.
Controls whether Limit Control is enabled on this port. Both this and the Global
Mode must be set to Enabled for Limit Control to be in effect. Notice that other
modules may still use the underlying port security features without enabling Limit
Control on a given port.
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 stackswitch 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
The Configuration All with available options will assign to whole ports.
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 addresse 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 everytime 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 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 stack or elect a new masterthe switch,
2) Disable and re-enable Limit Control on the port or the stackswitch,
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
Summary of Contents for NS4750-24S-4T-4X
Page 1: ...NS4750 24S 4T 4X User Manual P N 1702826 REV 00 01 ISS 14JUL14 ...
Page 56: ...56 Figure 4 2 7 Privilege Levels Configuration Page Screenshot ...
Page 110: ...110 Figure 4 4 6 Mirror Configuration Page Screenshot ...
Page 117: ...117 Figure 4 5 4 LACP Port Configuration Page Screenshot ...
Page 174: ...174 Figure 4 7 10 MST1 MSTI Port Configuration Page Screenshot ...
Page 180: ...180 Figure 4 8 2 Multicast Flooding ...
Page 249: ...249 Figure 4 9 18 Voice VLAN Configuration Page Screenshot ...
Page 271: ...271 Counter Counts the number of frames that match this ACE ...
Page 281: ...281 Figure 4 11 4 Network Access Server Configuration Page Screenshot ...
Page 315: ...315 ...
Page 328: ...328 ...
Page 335: ...335 ...
Page 346: ...346 Figure 4 14 1 LLDP Configuration Page Screenshot ...
Page 350: ...350 Figure 4 14 2 LLDP MED Configuration Page Screenshot ...
Page 372: ...372 Figure 4 16 1 Loop Protection Configuration Page Screenshot ...