DGS-3120-24SC - Switch D-LINK - Free user manual and instructions
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| Product Type | Managed Layer 2 Gigabit Switch |
| Brand | D-Link |
| Model | DGS-3120-24SC |
| Ports | 24 SFP (1000BASE-X) + 4 Combo 10/100/1000BASE-T/SFP |
| Form Factor | 1U Rackmount |
| Dimensions (W x D x H) | 440 x 250 x 44 mm (17.32 x 9.84 x 1.73 in) |
| Weight | 3.5 kg (7.7 lb) |
| Power Supply | Internal, 100-240 VAC, 50-60 Hz |
| Power Consumption | Max 30 W |
| Switching Capacity | 48 Gbps |
| MAC Address Table | 16K entries |
| VLAN Support | 802.1Q VLAN up to 4K groups |
| Quality of Service (QoS) | 8 priority queues, 802.1p, DSCP |
| Management | Web UI, CLI, SNMP v1/v2c/v3, RMON, Telnet, SSH |
| Security Features | 802.1X, ACL, Port Security, DHCP Snooping, ARP Inspection |
| Spanning Tree Protocol | 802.1D, 802.1w, 802.1s |
| Link Aggregation | IEEE 802.3ad, up to 8 groups, 8 ports per group |
| Jumbo Frame Support | Up to 9K bytes |
| Stacking | Physical stacking up to 8 units (via optional stacking module) |
| Cooling | 1 fan, front-to-back airflow |
| Operating Temperature | 0°C to 40°C (32°F to 104°F) |
| Certifications | CE, FCC, UL, RoHS |
Frequently Asked Questions - DGS-3120-24SC D-LINK
How do I reset the D-Link DGS-3120-24SC to factory defaults?
Press and hold the reset button on the front panel for 10 seconds while the switch is powered on. The switch will reboot with factory settings.
What is the default IP address of the switch?
The default IP address is 10.90.90.90 with subnet mask 255.0.0.0. You can access the web interface via a browser.
How do I update the firmware on the DGS-3120-24SC?
Download the latest firmware from D-Link support. Access the web interface, go to 'System' > 'Firmware Upgrade', select the file, and apply. Do not power off during upgrade.
How to configure VLANs on this switch?
Via the web UI, go to 'L2 Features' > 'VLAN' > '802.1Q VLAN'. Create VLANs and assign tagged/untagged ports as needed.
Does the DGS-3120-24SC support PoE?
No, this model does not support Power over Ethernet. It provides fiber and copper data ports without PoE.
How to configure port mirroring?
Go to 'System' > 'Port Mirroring'. Select source ports and destination port. You can monitor inbound/outbound traffic.
Can I stack multiple DGS-3120-24SC switches?
Yes, using optional stacking modules (DGS-3120-24SC supports physical stacking up to 8 units via dedicated stacking ports).
What type of SFP modules are compatible?
D-Link recommends using D-Link branded SFP modules for compatibility. Standard 1000BASE-SX/LX modules should work.
How to enable SSH access?
Go to 'Security' > 'SSH'. Enable SSH and configure authentication. Use an SSH client to connect to the management IP.
The switch fan is loud; is that normal?
Yes, the fan is always on and may produce noticeable noise. For a quieter environment, consider placing it in a separate equipment room.
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USER MANUAL DGS-3120-24SC D-LINK
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Product information
Brand : D-LINK
Model : DGS-3120-24SC
Category : Switch