D-Link xStack DGS-3120 Series Reference Guide

xStack® DGS-3120 Series Layer 3 Managed Gigabit Ethernet Switch Web UI Reference Guide
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Figure 8-93 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.
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.
Trap / Log
Use the drop-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.
SFTP Server Settings
Secure File Transfer Protocol (SFTP) over SSH2 is a remotely secure file transfer protocol providing security on all
file operations. SFTP server runs as a subsystem of SSH server. SSH server is required to be enabled before
enabling SFTP server. This window is used to configure and view the SFTP server settings.
To view this window, click Security > SFTP Server Settings as shown below:
Figure 8-94 SFTP Server Settings window
The fields that can be configured are described below:

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)