48-Port L3 10/100Mbps Managed Switch with 2-port Copper Gigabit & 2 Combo Copper/SFP Gigabit Ports

For the SMB requiring a cost effective core switching solution, as well as for larger Enterprise and Metropolitan Service Providers (MSP) environments needing a managed, feature rich switch capable of uplinking to backbone switches, the xStack DES-3852 is designed to meet the needs of the most demanding departmental and enterprise connectivity applications. The D-Link xStack DES-3852 Switch is a fully managed Layer 3 switch that provides (48) 10/100Mbps Fast Ethernet ports and (2) Combo SFP/1000BASE-T Gigabit Ethernet uplinks. In addition, (2) fixed 1000BASE-T ports in the back-panel can provide a dedicated trunk connection between devices or core switches. The xStack DES-3852 also provides virtual stacking functionality via D-Link SIM technology allowing up to 32 units to be managed via a single IP address. With support for Q-in-Q Double VLAN tagging, IPv6 aware*, Dynamic Layer 3 Routing, IEEE802.1s, and bandwidth control, the xStack DES-3852 incorporates advanced features suitable for the MSP as well as the SMB and Enterprise size network.

Metro Switching
Service provider networks are moving from circuit-based access to newer packet-based access that will require highly reliable intelligent switching, and at the same time demand resiliency and dependability. The xStack DES-3852 meets this demand by supporting industry standards for 802.1s (multiple spanning tree), 802.3ad link aggregation for up to 32 groups, bandwidth rate limiting down to 64k, and support for an external redundant power option for added peace of mind. In addition the xStack DES-3852 offers Double VLAN Q-in-Q tagging, which adds on an additional tag to a VLAN tag, expanding the VLAN space and allowing service providers to deploy their service quickly and securely. The xStack DES-3852 also incorporates advanced QoS support such as the ability to filter and forward traffic based on Layer 2/3/4, making it an ideal choice for VOIP, video, and audio services targeting business class customers.

Advanced L3 Routing
The xStack DES-3852 is a high performance Layer 3 switch that provides an ideal solution by offering advanced Layer 3 routing features such as RIP, OSPF, VRRP, up to 10 IP addresses per VLAN, and floating static routes. Policy Based routing* (which forwards traffic based on L3/L4 SA/DA) and Multi-Path Routing* (which is the method of establishing multiple paths between given source- destination nodes within a network) are also features supported on the xStack DES-3852. These added routing features provide redundancy, improve network utilization, and provide load balancing for the network.

Comprehensive Security
The DES-3852 incorporates an advanced portfolio of security features designed to protect your network from malicious attack. SSH & SSL encrypted management guarantee secure private configuration and monitoring when using the Graphical User Interface and Command Line. IP to MAC binding prevent unauthorized devices from accessing network resources. 802.1x port and MAC based authentication help provide added network security by requiring all users attempting to connect to your network, provide a username and password. This username and password must then be authenticated on a RADIUS or TACACS+ server thus insuring only authorized users have access to the network. Access control lists based on Layers 2/3/4, Rate Limiting, and Guest VLANs provide even more control over what and how users access the network. Finally with D-Link’s CPU Safeguard Engine, the DES-3852 is protected from Broadcast, Multicast, and Unicast flooding which in turn guarantees the DES-3852 is not crippled by DoS attacks.

Technical Specifications
DES-3852	• Managed Layer 2/3/4 Switch with (48) 10/100 Mbps Ports, (2) Combo SFP/1000BASE-T Ports, & (2) Built-in 1000BASE-T Uplinks
Packet Buffer	•  32MB
MAC address Table	•  16K
IP Address Table	• 4K
IP Routing	• 128 static/ 16k total
Aggregated Bandwidth	• 17.6Gbps
Transmission Method	• Store-and-Forward
VLANs Support	• Up to 4K Static, 255 Dynamic 802.1p VLAN Groups
Priority Queues	• 8 Queues - Strict Priority or Weight Round Robin Queue Scheduling
Classification ACLs	• MAC Address, IP Address, TCP/UDP Port Number & Payload, Physical Port, DSCP, 802.1p,VLAN, Protocol Type
Classification QoS	• MAC Address, IP Address, TCP/UDP Port Number, Physical Port, DSCP, ToS
Multicast Support	• IGMP v1/2/3, IGMP Snooping
Jumbo Frames	• Up to 9KB
Number of IP Interfaces per VLAN	• 50
Multicast Duplication	• Hardware Packet Replication on 8 VLANs on FE Ports and 32 VLANs on GE Ports*
Port Security	• Supports 16 MAC Addresses per Port. Radius and TACACS+ Authentication, SSH v2, SSL v2, 802.1x port/MAC based
Broadcast Storm Bandwidth Control	• Minimum Granularity: 128pkt/s
MAC-IP Binding	• Supports 500 Entries per Device
CPU Protection	• Protect CPU from Broadcast/Multicast/Unicast Flooding
CPU Monitoring	• Utilization via Web/CLI/SNMP. Trap /Logging Notification when Configurable Threshold Reached
0.0.0.0 IP Setting	• Prevents Device from Occupying an IP Address
802.3ad Link Aggregation	• Up to 32 Groups, 8 Ports per Group
Stacking	• Single IP Management up to 32 Units
LED Status Lights	• Per Device: Power, Console (to indicate login through RS-232 port), RPS, Link/Act/Speed
Interface Options
RJ-45	• 10BASE-T, 100BASE-TX & 1000BASE-T
LC	• With Optional Standard Small Form-Factor Pluggable (SFP) Gigabit Transceivers
RPS	• Redundant Power Option Via (DPS-200)
Network Management
In Band & Out of Band	• Telnet, CLI/Console, RMON, Web-based HTTP, SNMPv1/v2/v3, Syslog, Port Mirroring, TFTP Client, BootP/DHCP Client, IEEE 802.3 Ethernet, 802.3u Fast Ethernet, 802.3ab Gigabit Ethernet, 802.3z Gigabit Ethernet, 802.1d Spanning Tree, 802.1w Rapid Spanning Tree, 802.1p Priority Tags, 802.1q VLANs (4K static/ 255 dynamic), 802.3ad Link Aggregation (32 Groups/8 ports), 802.3x Flow Control, 802.1x Port-based /MAC based control, 802.1s (Multiple Spanning Tree), WRED Congestion Control*, STP Loopback Detection*, GVRP, Guest VLAN*, Per Port Limit IP Multicast Address Range*, Web GUI Traffic Monitoring, Web MAC Address Browsing, SNMP Trap on MAC Notification, DHCP Relay Option 82, DHCP Auto-configuration, Trap/Alarm/Log Severity Control, Dual Image, Dual Configuration*, Port Description, Editable Login Banner, Editable System Prompt, Virtual Interface/ Loopback Interface*, CPU Interface Filtering (Software ACL), Port Mirroring ACL Mode
IETF	• RFC 1157 SNMP, RFC 1112/2236 IGMPv1/2 IGMPv3*, RFC 1757/2021/2819 RMON (4 Groups), RFC 1493 Bridge MIB, RFC 1213 MIB II, RFC 793 TCP, RFC 826 ARP, RFC 854 Telnet, and DiffServ, RFC 1724 RIP v1/2, RFC 1850 OSPF , DVMRP, RFC 2934 PIM-DM, PIM-SM*, RFC 2932 Multicast Routing, RFC 2787 VRRP, RFC 2096 IP Forwarding Table, RFC 2618/2620 RADIUS Client, RFC 2863 IF MIB, RFC 2674 802.1p MIB, RFC 2668 802.3 MAU MIB, RFC 2665 ether-like MIB, SSH, SSL, TACACS+
Electrical & Emissions Summary
Emissions	• CE Class A, FCC Class A, VCCI Class A, C-Tick Class A
Power Supply	• AC Input: 100 - 240 VAC, 50/60 Hz Internal Universal Power Supply
Power Consumption	• 47 Watts
Safety Agency Certifications and Environmental
Safety	• CSA International, CB Report
Temperature	• Operating: 0° - 40° C (32° - 104° F) • Storage: -40° - 70° C (-40° - 158° F)
Humidity	• Operating: 10% to 85% RH, Non-Condensing • Storage: 5% to 95% RH, Non-Condensing
BTU	• 81.72 BTUs per Hour
Physical Specifications
Dimensions (W x D x H)	• 12.16 x17.36 x 1.73in (33.88 x 44.09 x 4.39cm) 1U Rack-mount Size
Weight	• 8.6lbs
Warranty and Support Information
Warranty	• Lifetime Warranty**
Support	• Free Technical Support
Ordering Information
Part Number	• Description
DES-3852	• Managed Layer 2/3/4 Switch with (48) 10/100 Mbps Ports, (2) Combo SFP/1000BASE-T Ports, & (2) Built-in 1000BASE-T Uplinks
DEM-310GT	• Mini-GBIC/SFP 1000BASE-LX (up to 10Km)
DEM-311GT	• Mini-GBIC/SFP 1000BASE-SX (up to 550m)
DPS-200	• Redundant Power Supply
DPS-800	• 2-Slot Redundant Power Supply Unit Chassis Support for DPS-200

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