D-link 24-port Xstack Layer 2 Stackable Poe Gigabit Switch Dgs-3120-24pc
No Longer Available
The DGS 3120 Series xStack Gigabit L2 Stackable Managed Switches consists of:
- DGS-3120-24TC: 24-Port Gigabit L2 Stackable Managed Switch including 4 x Combo 1000BASE-T/SFP ports and 2 x 10 Gbps stacking ports (smart fans)
- DGS-3120-24PC: 24-Port Gigabit L2 Stackable Managed PoE Switch including 4 x Combo 1000BASE-T/SFP ports and 2 x 10 Gbps stacking ports (24 x PoE ports, smart fans)
- DGS-3120-24SC: 24-Port Gigabit SFP L2 Stackable Managed Switch including 8 x Combo 1000BASE-T/SFP ports and 2 x 10 Gbps stacking ports (smart fans)
- DGS-3120-48TC: 48-Port Gigabit L2 Stackable Managed Switch including 4 x Combo 1000BASE-T/SFP ports and 2 x 10 Gbps stacking ports (smart fans)
- DGS-3120-48PC: 48-Port Gigabit L2 Stackable Managed PoE Switch including 4 x Combo 1000BASE-T/SFP ports and 2 x 10 Gbps stacking ports (48 x PoE ports, smart fans)
Below optional upgrade licence available to upgrade from Standard Image (SI) to Enhanced Image (EI):
- DGS-3120-24TC-SE-LIC: DGS-3120-24TC Standard to Enhanced Image Upgrade License
- DGS-3120-24PC-SE-LIC: DGS-3120-24PC Standard to Enhanced Image Upgrade License
- DGS-3120-24SC-SE-LIC: DGS-3120-24SC Standard to Enhanced Image Upgrade License
- DGS-3120-48TC-SE-LIC: DGS-3120-48TC Standard to Enhanced Image Upgrade License
- DGS-3120-48PC-SE-LIC: DGS-3120-48PC Standard to Enhanced Image Upgrade License
The DGS-3120 xStack Series switches are enhanced L2 access stackable switches designed to connect end-users in a secure SMB or enterprise network. These switches support physical stacking, multicast, and enhanced security, making them an ideal Gigabit access layer solution. The DGS-3120-24TC/48TC provides 20 or 44 10/100/1000 Mbps Gigabit Ethernet ports, and 4 combo 1000BASE-T/SFP Gigabit Ethernet ports. The DGS-3120-24PC/48PC provides 24 or 48 10/100/1000 Mbps PoE Gigabit Ethernet ports and 4 combo 1000BASE-T/SFP Gigabit Ethernet ports. The DGS-3120-24SC provides 16 SFP Gigabit Ethernet ports and 8 combo 1000BASE-T/SFP Gigabit ports. Each 10/100/1000 Mbps port on the DGS-3120-24PC/48PC supports the 802.3af and 802.3at Power over Ethernet standards. The default power budget for these models is 370 watts and can be expanded to 760 watts with the DPS-700 RPS. The switches are also equipped with an SD Card slot, allowing the user to boot images and upload configuration files directly from an SD Card as well as conveniently save syslog files onto the SD Card.
Standard and Enhanced Images
The DGS-3120 Series is embedded with two different software images - the Standard Image (SI) and Enhanced Image (EI). The Standard Image provides sophisticated features for campus or enterprise usage. It includes advanced Quality of Service (QoS), traffic shaping, L2 multicasting, robust security features, and IPv6 features which are suitable for next-generation IPv6 networks or triple play applications over Metro Ethernet*. The Enhanced Image supports ERPS, Double VLAN (Q-in-Q), Ethernet OAM, Static Route, IMPB, and sFlow.
Enhanced Network Reliability
The DGS-3120 Series targets enterprises, campuses, and customers who require a high level of network security and maximum uptime. 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 enhances network resilience. G.8032 Ethernet Ring Protection Switching (ERPS) minimizes the recovery time to 50ms. For load sharing and redundancy backup in a 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 such as VoIP, video conferencing, IPTV, and IP surveillance are given high priority. Traffic Shaping features guarantee bandwidth for these services when the network is busy. L2 Multicast support enables the DGS-3120 to handle growing IPTV bandwidth requirements. 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 their 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 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 ensures the 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 D-Link Green Technology, which includes a power saving mode, Smart Fan, reduced heat, and cable length detection. The power-saving feature automatically powers down ports that are detected to 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.
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.
Interface
Number of 10/100/1000BASE-TX ports
DGS-3120-24TC - 20 ports
DGS-3120-24PC - 20 ports
DGS-3120-48TC - 44 ports
DGS-3120-48PC - 44 ports
Number of SFP ports
DGS-3120-24SC - 16 ports
Number of Combo 1000Base-T/SFP ports
DGS-3120-24TC - 4 ports
DGS-3120-24PC - 4 ports
DGS-3120-24SC - 8 ports
DGS-3120-48TC - 4 ports
DGS-3120-48PC - 4 ports
RS-232 Console Port
Yes
SD card slot
Yes
Number of stacking ports
2
Maximum number of units per stack
6
Maximum stacking bandwidth
Linear topology - up to 20 Gbps
Bi-directional redundant ring topology - up to 40 Gbps
PoE Supported Models (Standard(s)/Number of Ports/Maximum Power Budget)
DGS-3120-24PC - 802.3af/at/24 ports/370W (760W with DPS-700 RPS)
DGS-3120-48PC - 802.3af/at/48 ports/370W (760W with DPS-700 RPS)
Performance
Switch Capacity
DGS-3120-24TC - 88 Gbps
DGS-3120-24PC - 88 Gbps
DGS-3120-24SC - 88 Gbps
DGS-3120-48TC - 136 Gbps
DGS-3120-48PC - 136 Gbps
64-Byte Packet Forwarding Rate
DGS-3120-24TC - 65.48 Mpps
DGS-3120-24PC - 65.48 Mpps
DGS-3120-24SC - 65.48 Mpps
DGS-3120-48TC - 101.19 Mpps
DGS-3120-48PC - 101.19 Mpps
Packet Buffer
2 MB
Flash Memory
32 MB
Physical & Environmental
MTBF
DGS-3120-24TC - 561830 hours
DGS-3120-24PC - 282542 hours
DGS-3120-24SC - 516317 hours
DGS-3120-48TC - 292202 hours
DGS-3120-48PC - 223006 hours
Acoustics
DGS-3120-24TC - Max: 44.2 dB; Min: 28.1 dB
DGS-3120-24PC - Max: 52.5 dB; Min: 38.1 dB
DGS-3120-24SC - Max: 45.0 dB; Min: 33.1 dB
DGS-3120-48TC - Max: 45.2 dB; Min: 35.7 dB
DGS-3120-48PC - Max: 52.3 dB; Min: 38.4 dB
Heat Dissipation
DGS-3120-24TC - 138.105 BTU/h
DGS-3120-24PC - 1628.957 BTU/h (with 370 W PoE load), 3219.7 BTU/h (with 760 W PoE load)
DGS-3120-24SC - 116.281 BTU/h
DGS-3120-48TC - 228.811 BTU/h
DGS-3120-48PC - 1725.46 BTU/h (with 370 W PoE load), 3367.4 BTU/h (with 760 W PoE load)
Power Input
100 to 240 VAC, 50 to 60Hz Internal Universal Power Supply
Power Consumption (maximum)
DGS-3120-24TC - 40.5W
DGS-3120-24PC - 482.7W (with 370W PoE load), 944.2W (with 760W PoE load)
DGS-3120-24SC - 34.1W
DGS-3120-48TC - 67.1W
DGS-3120-48PC - 516.5W (with 370W PoE load), 987.5W (with 760W PoE load)
Dimensions (W x D x H)
DGS-3120-24TC - 440 x 210 x 44 mm (17.32 x 8.27 x 1.73 inches)
DGS-3120-24PC - 440 x 310 x 44 mm (17.32 x 12.20 x 1.73 inches)
DGS-3120-24SC - 440 x 210 x 44 mm (17.32 x 8.27 x 1.73 inches)
DGS-3120-48TC - 440 x 310 x 44 mm (17.32 x 12.20 x 1.73 inches)
DGS-3120-48PC - 440 x 380 x 44 mm (17.32 x 14.96 x 1.73 inches)
Weight
DGS-3120-24TC - 2559 g (5.64 pounds)
DGS-3120-24PC - 5423 g (11.96 pounds)
DGS-3120-24SC - 2635 g (5.81 pounds)
DGS-3120-48TC - 4615 g (10.17 pounds)
DGS-3120-48PC - 6331 g (13.96 pounds)
Ventilation
Smart fans4
Temperature
Operating: 0° to 50°C
Storage: -40° to 70°C
Operating Humidity
Operating: 10% ~ 90% Non-condensing
Storage: 5% ~ 90% Non-condensing
EMI/EMC
FCC Class A, CE Class A, VCCI Class A, IC, C-Tick, BSMI
Safety
CB, cUL, LVD, BSMI
Certification
IPv6 Ready Logo Phase 2
Software Feature
Standard Image (SI) Features
Stackability
Physical Stacking
Up to 40G Stacking Bandwidth
Up to 6 units per Stack
Virtual Stacking
D-Link Single IP Management (SIM)
Up to 32 units per Virtual Stack
L2 Features
MAC Address Table: 16K entries
Flow Control
802.3x Flow Control
HOL Blocking Prevention
Jumbo Frames up to 13 Kbytes
Spanning Tree Protocols
802.1D STP
802.1w RSTP
802.1s MSTP
BPDU Filtering
Root Restriction
Loopback Detection
802.3ad Link Aggregation
Max. 32 groups per device, 8 Gigabit ports per group
Port Mirroring
One-to-One
Many-to-One
Flow-based
RSPAN Mirroring
L2 Multicasting
IGMP Snooping
IGMP v1/v2/v3 Snooping
Supports 1024 IGMP groups
Port/Host-based IGMP Snooping Fast Leave
Limited IP Multicast
Up to 24 IGMP filtering profiles, 32 ranges per profile
MLD Snooping
MLD v1/v2 Snooping
Support 1024 MLD Groups
Host-based MLD Snooping Fast Leave
VLAN
VLAN Group
Max. 4K VLAN Groups
GVRP
Max. 255 Dynamic VLAN Groups
802.1Q Tagged VLAN
Port-based VLAN
802.1v Protocol VLAN
Voice VLAN
MAC-based VLAN
ISM VLAN
Asymmetric VLAN
Private VLAN
VLAN Trunking
QoS (Quality of Service)
802.1p
8 queues per port
Queue Handling
Strict Priority
Weighted Round Robin (WRR)
Strict + WRR
CoS based on
Switch Port
VLAN ID
802.1p Priority Queues
MAC Address
IPv4 Address
DSCP
Protocol Type
TCP/UDP Port
User-Defined Packet Content
IPv6 Address
IPv6 Traffic Class
IPv6 Flow Label
Supports following actions for flows
Remark 802.1p Priority Tag
Remark TOS/DSCP Tag
Bandwidth Control
Bandwidth Control
Port-based (Ingress/Egress, Min. Granularity 8 Kbps)5
Flow-based (Ingress/Egress, Min. Granularity 8 Kbps)5
Three Color Marker5
CIR/PIR minimum granularity: 8 kbps6
Two Rate Three Color Marker (trTCM), CBS/PBS
Single Rate Three Color Marker (srTCM), CBS/EBS
Access Control List (ACL)
Supports up to 1.5K Ingress access rules
ACL based on
802.1p Priority
VLAN ID
MAC Address
Ether Type
IPv4 Address
DSCP
Protocol Type
TCP/UDP Port Number
User-Defined Packet Content
IPv6 Address
IPv6 Flow Label
IPv6 Traffic Class
Time-based ACL
CPU Interface Filtering
Security
SSH v2
SSL v1/v2/v3
Port Security
Up to 64 MAC addresses per port/VLAN
Broadcast/Multicast/Unicast Storm Control
Traffic Segmentation
D-Link Safeguard Engine
NetBIOS/NetBEUI Filtering
DHCP Server Screening
ARP Spoofing Prevention
DoS Attack Prevention5
BPDU Attack Protection
AAA
802.1X:
Port-based Access Control
Host-based Access Control
Identity-driven Policy (VLAN, ACL or QoS) Assignment
Authentication Database Failover
Web-based Access Control (WAC):
Port-based Access Control
Host-based Access Control
Identity-driven Policy (VLAN, ACL or QoS) Assignment
Authentication Database Failover
MAC-based Access Control (MAC):
Port-based Access Control
Host-based Access Control
Identity-driven Policy (VLAN, ACL or QoS) Assignment
Authentication Database Failover
Japan Web-based Access Control (Host-based JWAC)6
Guest VLAN
Microsoft NAP
Support 802.1X NAP
Support DHCP NAP
RADIUS Accounting
TACACS+ Accounting4
RADIUS and TACACS authentication for switch access
4 Level User Account
D-Link Green Features
Compliant with RoHS
Power Saving by Link Status
Power Saving by Cable Length
Time-based PoE7
Operation, Administration & Management (OAM)
Cable Diagnostics
Management
Web-based GUI8
Command Line Interface (CLI)
Telnet Server8
Telnet Client8
TFTP Client8
ZModem
SNMP v1/v2c/v3
SNMP Traps
System Log8
RMON v1:
Supports 1,2,3,9 groups
RMON v2:
Supports ProbeConfig group
LLDP
BootP/DHCP Client
DHCP Auto-Configuration
DHCP Relay
DHCP Client Option 12
DHCP Relay Option 82
Flash File System
Multiple Images
Multiple Configurations
CPU Monitoring
Debug Command
SNTP
Password Recovery
Password Encryption
Trusted Host
Microsoft NLB (Network Load Balancing) Support
ICMPv6
MIB
RFC 1213 MIB II
RFC 4188 Bridge MIB
RFC 1907 SNMPv2 MIB
RFC 1757, 2819 RMON MIB
RFC 2021 RMONv2 MIB
RFC 1398, 1643, 1650, 2358, 2665 Ether-like MIB
RFC 2674 802.1p MIB
RFC 2233, 2863 IF MIB
RFC 2618 RADIUS Authentication Client MIB
RFC 2620 RADIUS Accounting Client MIB
RFC 2925 PING & TRACEROUTE MIB
RFC 2674, 4363 802.1p MIB
RFC1065, 1066, 1155, 1156, 2578 MIB Structure9
RFC1212 Concise MIB Definitions9
RFC1215 MIB Traps Convention9
RFC1157, 2571-2576 SNMP MIB9
RFC4022 MIB for TCP9
RFC4113 MIB for UDP9
RFC4293 IPv6 SNMP Mgmt Interface MIB9
RFC Standard Compliance
RFC 768 UDP
RFC 791 IP
RFC 792, 2463, 4443 ICMP
RFC 793 TCP
RFC 826 ARP
RFC 3513, 4291, IPv6 Addressing Architecture
RFC 2893, 4213 IPv4/IPv6 dual stack function
RFC 2463, 4443 ICMPv6
RFC 2462, 4862 IPv6 Stateless Address Auto Configuration
RFC 2464 IPv6 Ethernet and definition
RFC 1981 Path MTU Discovery for IPv6
RFC 2460 IPv6
RFC 2461, 4861 Neighbor Discovery for IPv6
RFC 783 TFTP
RFC 854 Telnet
RFC 951, 1542 BootP
RFC 2068 HTTP
RFC 1492 TACACS
RFC 2866 RADIUS Accounting
RFC 2474, 3260 DiffServ
RFC 1321, 2284, 2865, 3580, 3748 Extensible Authentication Protocol (EAP)
RFC 2571, 2572, 2573, 2574, SNMP
IPv6 Ready Logo Phase 2
Enhanced Image (EI) Features
L2 Features
Ethernet Ring Protection Switching (ERPS)
VLAN
Double VLAN (Q-in-Q)
Port-based Q-in-Q
L3 Features
Max. 16 IP Interfaces
ARP Proxy10
IPv6 Neighbour Discovery (ND)
L3 Routing
Static Route
512 static routing entries for IPv4/IPv6
Access Control List (ACL)
Supports up to 512 egress access rules
Security
IP-MAC-Port Binding
ARP Packet Inspection
IP Packet Inspection
DHCP Snooping
IPv6 ND Snooping
Support up to 510 Address Binding Entries per Device
AAA
Compound Authentication
Operation, Administration & Management (OAM)
802.3ah Ethernet Link OAM
802.3ah D-Link Extension: D-link Unidirectional Link Detection (DULD)10
802.1ag Connectivity Fault Management (CFM)
ITU-T Y.173110
Management
sFlow
Trusted Host
D-Link DGS-3120-24PC
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-Links 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.