D-Link DIS-200G-12PS [103/172] Command default level

D-Link DIS-200G-12PS [103/172] Command default level
DIS-200G Series Gigabit Ethernet Switch CLI Reference Guide
100
24. Safeguard Engine Commands
24-1
cpu-protect safeguard
This command is used to enable or configure the Safeguard Engine. Use the
no
form of this command to
disable the Safeguard Engine.
cpu-protect safeguard [threshold
RISING-THRESHOLD FALLING-THRESHOLD
]
no cpu-protect safeguard [threshold]
Parameters
threshold
(Optional) Specifies to configure the utilization to control when the
Safeguard Engine function will activate.
RISING-THRESHOLD
Specifies to set a percentage value of the rising CPU utilization
which will trigger the Safeguard Engine function. Once the CPU
utilization rises over the specified percentage, the Safeguard
Engine mechanism will initiate. The valid range is from 20 to 100.
FALLING-THRESHOLD
Specifies to set a percentage value of the falling CPU utilization
which will trigger the Safeguard Engine function to cease. Once
the CPU utilization falls to the specified percentage, the
Safeguard Engine mechanism will shut down. The valid range is
from 20 to 100.
Default
By default, Safeguard Engine is disabled.
By default, the rising threshold of CPU utilization is 50.
By default, the falling threshold of CPU utilization is 20.
Command Mode
Global Configuration Mode.
Command Default Level
Level: 15.
Usage Guideline
The Safeguard Engine can help the overall operability of the device by minimizing the workload of the Switch
while the attack is ongoing, thus making it capable to forward essential packets over its network in a limited
bandwidth. When the CPU utilization of the Switch rises over configured rising threshold, it will enter exhausted
mode. In exhausted mode, the Switch limits the bandwidth of receiving ARP and broadcast IP packets.
Example
This example shows how to enable the Safeguard Engine and configure the thresholds, which the rising and
falling threshold are 60 and 40 respectively.
Switch# configure terminal
Switch(config)# cpu-protect safeguard threshold 60 40
Switch(config)#

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