D-Link DGS-1510-28P User Manual - Page 525
Default, Command Mode, Command Default Level, Usage Guideline, Example, 3 cpu-protect sub-interface
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DGS-1510 Series Gigabit Ethernet SmartPro Switch CLI Reference Guide RISING-THRESHOLD FALLING-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. 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 30. By default, the falling threshold of CPU utilization is 20. Command Mode Global Configuration Mode. Command Default Level Level: 12. 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)# 57-3 cpu-protect sub-interface This command is used to configure the rate limit for traffic destined to the CPU by sub-interface types. cpu-protect sub-interface {manage | protocol | route} pps RATE no cpu-protect sub-interface {manage | protocol | route} Parameters RATE Default None. Command Mode Specifies the threshold value. The unit is packets per second. When set to 0, all packets of the specified sub-interface type will be dropped. 522
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