Standard and Enhanced Images
The DGS-3120 Series offer flexibility with two different software images –
Standard Image (SI) and Enhanced Image (EI). The Standard Image provides
sophisticated features for campus, or enterprise. It includes advanced Quality
of Service (QoS), traffic shaping, L2 multicasting, and robust security
features. The Enhanced Image supports ERPS, Double VLAN (Q-in-Q), Ethernet OAM,
Static Route, IMPB, sFlow, IPv6 features which are suitable for the next
generation IPv6 networks or triple play applications in Metro Ethernet.
Enhanced Network Reliability
The DGS-3120 Series targets enterprise/campus and customers who require a high
level of network security and maximum uptime. All the models in DGS-3120 series
support an external redundant power supply so that continued operation can be
assured. They also include other features, such as 802.1D Spanning Tree (STP),
802.1w Rapid Spanning Tree (RSTP) and 802.1s Multiple Spanning Tree (MSTP),
Loopback Detection (LBD), and Broadcast Storm Control, that enhance network
resilience. The G.8032 Ethernet Ring Protection Switching (ERPS) function
minimizes the recovery time to 50 ms. For load sharing and redundancy backup in
switch cascading/server attachment configuration, the DGS-3120 Series provides
dynamic 802.3ad Link Aggregation Port Trunking.
Comprehensive Security
The DGS-3120 Series provides users with the latest security features such as
Multi-layer and Packet Content Access Control Lists (ACL), Storm Control, and
IP-MAC-Port Binding (IMPB) with DHCP Snooping. The IP-MAC-Port Binding feature
allows administrators to bind a source IP address with an associated MAC and
also define the port number to enhance user access control. With the DHCP
Snooping feature, the switch automatically learns IP/MAC pairs by snooping DHCP
packets and saving them to the IMPB white list. In addition, the D-Link
Safeguard Engine identifies and prioritizes “CPU interested” packets to
prevent malicious traffic from interrupting normal network flows, and to protect
switch operation.
Identity Driven Network Policies
The DGS-3120 Series supports authentication mechanisms such as 802.1X,
Web-based Access Control (WAC), and MAC-based Access Control (MAC) for strict
access control and easy deployment. After authentication, individual policies
such as VLAN membership, QoS policies, and ACL rules can be assigned to each
host. In addition, the switch also supports Microsoft® NAP (Network Access
Protection). NAP is a policy enforcement technology that allows customers to
protect network assets from unhealthy computers by enforcing compliance with
network health policies.
Traffic Management for Triple Play
The DGS-3120 Series implements a rich set of multilayer QoS/CoS features to
ensure that critical network services like VoIP, video conference, IPTV and IP
surveillance are served with high priority. The Traffic Shaping features
guarantee bandwidth of these services when the network is busy. With L2
Multicast support, the DGS-3120 shows its ability to handle growing IPTV
applications. Host-based IGMP/MLD Snooping allows multiple multicast subscribers
per physical interface and ISM VLAN sends multicast streams in a multicast VLAN
to save bandwidth and to provide better security to the backbone network. The
ISM VLAN profiles allow users to bind/replace the pre-defined multicast
registration information to subscriber ports quickly and easily.
Proactive, Effective Network Management
To uphold enterprise customers’ Service Level Agreements (SLA), service
providers must reduce the Mean Time to Repair (MTTR) and increase service
availability. Ethernet OAM features address these challenges and enable service
providers to offer carrier-grade services. The DGS-3120 Series supports
industry-standard OAM tools, including IEEE 802.3ah, IEEE802.1ag, and ITU-T
Y.1731. Connectivity Fault Management (CFM) provides tools to monitor and
troubleshoot end-to-end Ethernet networks, allowing service providers to check
connectivity, isolate network issues, and identify customers affected by network
issues.
IPv6 Technology
The DGS-3120 Series is fully compliant with the future IPv6 networks. It
supports remote IPv6 manageability from telnet, HTTP, or SNMP. To create secure
IPv6 networks, the DGS-3120 Series uses IPv6 ACL, DHCPv6 Snooping and Neighbour
Discovery (ND) snooping functions to protect the network from illegal IPv6
clients. The DGS-3120 Series has been certified with IPv6 Ready Logo Phase
2 from the IPv6 forum, a worldwide IPv6 advocacy consortium. The IPv6 Ready
Logo Program provides conformance and interoperability of IPv6 products.
D-Link Green Technology**
D-Link is striving to take the lead in developing innovative and power-saving
technology that does not sacrifice operational performance or functionality. The
DGS-3120 Series implements the D-Link Green Technology, which includes a power
saving mode, smart fan, reduced heat dissipation, and cable length detection.
The power saving feature automatically powers down ports that have no link or
link partner. The Smart Fan feature allows for the built-in fans to
automatically turn on at a certain temperature, providing continuous, reliable
and eco-friendly operation of the switch. Additional power saving can be
achieved by utilizing time-based PoE feature of the switch, which allows
scheduled shut down of power delivery to PoE devices.
**Manageability
D-Link’s Single IP Management (SIM) simplifies and speeds up management
tasks, allowing multiple switches to be configured, monitored and maintained
from any workstation running a web browser through one unique IP address. This
virtual stack is managed as a single object, having all units maintained by one
IP address. The DGS-3120 Series also supports standard-based management
protocols such as SNMP, RMON, Telnet, Console, Web-based GUI and SSH/SSL
security authentication.
- PoE power budget can be increased from 370W to 740W with optional DPS-700 power supply
- Stacking cable DEM-CB50 or DEM-CB100 is required for stacking
Technical Specifications
- Guest VLAN : Yes
- IP Interfaces : Yes (with EI)
- Routing Table Size : 512 (with EI)
- Redundant PSU : DPS-700
- Stacking : Physical and Virtual
- Stacking Capacity : Physical (6), Virtual (32)
- Switch Type : Layer 2+ IP Routing
- Type of Port Required : Gigabit Copper|Gigabit Fibre
- Number of Ports : 24 – 32
- PoE Type Required : PoE|PoE+|Extended PoE Budget
- Stacking Bandwidth : 40 Gbps
- Redundant Power Supply Option : Yes
- Command Line Interface : Yes
- Warranty : Limited Lifetime
- 1000Base-T ports : 24 Ports
- SFP ports : 4 Ports (Combo)
- PoE ports : 24 Ports
- PoE Budget : 370 Watts (740 w RPS)
- Switching Capacity : 56 Gbps
- QoS : Yes
- Spanning Tree Protocol : Yes
- Link Aggregation : Yes
- VLAN : 4K Groups
- Jumbo Frame : 13K bytes
- Voice VLAN : Yes
- IGMP Snooping : Yes
- 802.1X Access Control : Yes
- DHCP Server Screening : Yes
- SNMP : Yes
- Cable Diagnostics : Yes
- Energy Saving Technology : EEE Compliant|D-Link Green
- 19" Rack Mountable : Yes
- Fans : Yes
- Dimensions (Size) : 51 × 45 × 12.5 cm
- Web-based GUI : Yes
- Layer : Layer 2+
- 10 Gig ports : No