D-Link DES-6500 - Switch User Manual page 125

To configure, set the following parameters and click Apply.
Parameter Description
State Use the pull-down menu to globally enable or disable the Safeguard Engine settings for the
Switch.
Trap / Log Use the pull-down menu to enable or disable the sending of messages to the device's SNMP
agent and switch log once the Safeguard Engine has been activated by a high CPU utilization
rate.
Mode Used to select the type of Safeguard Engine to be activated by the Switch when the CPU
utilization reaches a high rate. The user may select:
to the CPU by dynamically allotting an even bandwidth to all traffic flows.
Switch, and will stop receiving all unnecessary broadcast IP packets, until the storm has
subsided.
(For line cards DES-6505, DES-6507, DES-6509 and DES-6512, the Safeguard Engine will
always be Strict mode regardless of configuration, due to a chipset limitation.)
The default setting is Fuzzy mode.
Used to configure the acceptable level of CPU utilization before the Safeguard Engine
Rising Threshold
mechanism is enabled. Once the CPU utilization reaches this percentage level, the Switch will
move into the Safeguard Engine state, based on the parameters provided in this window.
Falling Threshold Used to configure the acceptable level of CPU utilization as a percentage, where the Switch
leaves the Safeguard Engine state and returns to normal mode.
Safeguard This is a read-only field that will state the current Safeguard Engine mode of the Switch. This
Engine Status field may read "normal mode" or "exhausted mode".
Click Apply to implement changes made to this window.
xStack DES-6500 Modular Layer 3 Chassis Ethernet Switch User Manual
Figure 6- 86. Safeguard Engine Settings window
Safeguard Engine Settings
Fuzzy – If selected, this function will instruct the Switch to minimize the IP and ARP traffic flow
Strict – If selected, this function will stop accepting all ARP packets not intended for the
CPU Utilization
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