D-Link xStack DGS-3120 Series User Manual

xStack
®
DGS-3120 Series Layer 3 Managed Gigabit Ethernet Switch CLI Reference Guide
890
Chapter 91 Safeguard Engine Command
List
config safeguard_engine {state [enable | disable] | utilization {rising <value 20-100> | falling
<value 20-100>}(1) | trap_log [enable|disable] | mode [ strict | fuzzy]}(1)
show safeguard_engine
91-1 config safeguard_engine
Description
This command is used to configure the CPU protection control for the system.
Format
config safeguard_engine {state [enable | disable] | utilization {rising <value 20-100> | falling
<value 20-100>}(1) | trap_log [enable|disable] | mode [ strict | fuzzy]}(1)
Parameters
state - (Optional) Specify to configure CPU protection state to enable or disable.
enable - Specify that CPU protection will be enabled.
disable - Specify that CPU protection will be enabled.
utilization - (Optional) Specify to configure the CPU protection threshold.
rising - Config utilization rising threshold , the range is between 20%-100% , if the CPU
utilization is over the rising threshold, the Switch enters exhausted mode.
<20-100> - Enter the utilization rising value here. This value must be between 20 and 100.
falling - Config utilization falling threshold , the range is between 20%-100% , if the CPU
utilization is lower than the falling threshold, the Switch enters normal mode.
<20-100> - Enter the utilization falling value here. This value must be between 20 and 100.
trap_log - (Optional) Configure the state of CPU protection related trap/log mechanism to enable
or disable. If set to enable, trap and log will be active while cpu protection current mode
changed.If set to disable, current mode change will not trigger trap and log events.
enable - Specify that the CPU protection trap or log mechanism will be enabled.
disable - Specify that the CPU protection trap or log mechanism will be disabled.
mode - (Optional) determine the controlling method of broadcast traffic. Here are two modes
(strict and fuzzy).
strict - In strict, the Switch will stop receiving all ‘ARP not to me’ packets (the protocol address
of target in ARP packet is the Switch itself). That means no matter what reasons cause the
high CPU utilization (may not caused by ARP storm), the Switch reluctantly processes
any ’ARP not to me’ packets in exhausted mode.
fuzzy - In fuzzy mode, the Switch will adjust the bandwidth dynamically depend on some
reasonable algorithm.
Restrictions
Only Administrator, Operator and Power-User level users can issue this command.
Example
To configure CPU protection:

D-Link xStack DGS-3120 Series Specifications

General

MAC Address Table	16K entries
Ports	10/100/1000BASE-T ports
VLANs	4094
Jumbo Frame	Up to 9KB
Power Supply	Internal power supply (depending on model)
Power over Ethernet (PoE)	No
Layer 3 Features	RIP
Quality of Service (QoS)	8 queues per port, DiffServ
Security Features	ACLs
Management	Web-based, CLI, SNMP
Operating Temperature	0°C to 40°C
Storage Temperature	-40°C to 70°C
SFP Ports	Combo 10/100/1000BASE-T/SFP ports and/or dedicated SFP/SFP+ ports (depending on model)