xStack® DES-3528/DES-3552 Series Layer 2 Managed Stackable Fast Ethernet Switch Web UI Reference Guide
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Figure 8-74 Safeguard Engine Settings window
The fields that can be configured are described below:
Parameter Description
Safeguard Engine State
Use the radio button to globally enable or disable Safeguard Engine settings for the
Switch.
Rising Threshold (20% -
100%)
Used to configure the acceptable level of CPU utilization before the Safeguard Engine
mechanism is enabled. Once the CPU utilization reaches this percentage level, the
Switch will move into Exhausted mode, based on the parameters provided in this
window. The default is 30.
Falling Threshold (20%
- 100%)
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. The default is
20.
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:
Fuzzy – If selected, this function will instruct the Switch to minimize the IP and ARP
traffic flow to the CPU by dynamically allotting an even bandwidth to all traffic flows.
Strict – If selected, this function will stop accepting all ARP packets not intended for
the Switch, and will stop receiving all unnecessary broadcast IP packets, until the
storm has subsided.
The default setting is Fuzzy mode.
Click the Apply button to accept the changes made.
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