description
D-Link''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s xStack®DXS-3250 layer 2 switch stacking technology adopts the latest medium-heavy voice, video and data applications and is ideal.
D-Link''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s xStack 3200 series switches are designed with traditional layers to provide easy integration of wireless technologies, data access switches, and emphasis on security, performance and flexibility.With the latest stacking technology, from D-Link xStack DXS-3250, up to 16 units can be stacked*, providing up to 400 Gigabit ports.It can be stacked such as DXS/DWS-3227, DXS/DWS-3227P, and DXS/DWS-3250 with other D-Link switches, providing extraordinary flexibility.It provides 48 built-in copper Gigabit ports, including 4 Combo SFP ports for easy and flexible connection to optical fiber-based Gigabit media.DXS-3250 is also equipped with two module slots, supporting 10 Gigabit Ethernet copper cables CX-4 and fiber XFP connections.When the CX-4 interface, through the stacking bandwidth of 48Gbps, can achieve up to the total switching capacity to 240Gbps.In addition, DXS-3250 also supports IP static routing, 4000 VLANs, and up to 64 trunk groups. It is wireless-ready, DXS-3250 has the most feature-rich, high-capacity switching solution far in the same class.

Unified wired/wireless ready
In the wired and wireless environment of a mixed network, predictable coverage and security become the most important.The need for a switching solution to address these needs has become the key in wired and wireless environments.DXS-3250 can meet this demand and more.With a simple optional firmware upgrade, the conversion from a standard layer 2 switch DXS-3250 to a wired and wireless integrated switching solution can provide strong wireless security, easy deployment capabilities, to detect malicious access points, and centralized Management, compatible for allWLAN components.Centralized management has become vital to real-time inventory, data mining, mobility and seamless integration of demand for personal electronic products, such as wireless technologies deployed by PDAs and 3G/VoIP cell phone arrays.With optional software upgrades, DXS-3250 becomes a wireless switch that provides secure and seamless access, ensuring clear, uninterrupted roaming between data and voice communication points throughout the wireless network infrastructure.

DNA stacking architecture
Distributed network architecture（DNA）It is a combination of embedded hardware and software in D-Link''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s latest 3200 xStack switch series.Switches built with DNA are easy to stack with little or no extended system downtime.For example, the DXS-3200 series switches are devices that quickly discover failures in the stack and reroute traffic to automatically avoid failures and discover new topologies for self-healing.The flexibility of DNA enables network designers to choose the correct topology to connect the equipment, whether it is connected between the wiring closets through 10 Gigabit Ethernet interfaces or using 1000BASE-X ports.DXS-3200 series switches can be used in some stacking topologies such as ring or chain.When the stack is modified, DNA automatically discovers the new topology and reconfigures the system to adapt to the change.In case of equipment failure, reconfiguration of the stack in the switch quickly to avoid a failed switch, resulting in extremely fast failover time, and almost no downtime.In addition, the DXS-3200 series allows network administrators to maintain system functions such as port mirroring, transparency of VLAN and cross-stack link aggregation.Unlike other stacking solutions, this feature allows administrators to add and delete VLAN ports without the need to configure VLAN trunking devices to create VLANs on each switch without adding troublesome VLANs.This can also be done by using port mirroring, without having to be physically connected to the same device to be able to monitor any port in the entire stack.This flexibility allows for better troubleshooting, faster configuration, and a lower risk of a configuration error.

Comprehensive security
DXS-3250 is equipped to deal with many of today''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s emerging security vulnerabilities, previously only entrusted to independent firewalls.It uses ACLs built into searching and filtering other threats: denial of service attacks, Trojan horses, worms, and more.You can also set other access rules to prevent network and 802.1x authentication logins.In addition, you can also set up port-based security to protect the integrity of the network.In addition, DXS-3250 prevents attacks on the CPU itself and improves utilization to meet the needs of existing networks to maximize device response to user configuration activities.In addition, the well-known number of ports allows applications that can be pre-programmed, which will allow these applications to be served more quickly and reduce the load on the CPU.

High availability
DXS-3250 supports “shortest path” switching, thereby improving flexibility, uptime and network efficiency.It also supports an optional redundant power supply（DPS-500）.It includes support for 802.3ad link aggregation, and 802.1w rapid spanning tree to improve the reliability and availability of the network.

Network management
DXS-3250 has a CLI console with multiple network management options, remote login, Web graphical user interface, SNMPv1/v2/v3, and RMON.It also supports a variety of advanced traffic management, including: Layer 3 static routing, bandwidth control, broadcast storm control, dedicated VLAN, and support for IGMP Snooping.It also supports D-Link’s exclusive DNA stacking technology, allowing up to 16 D-Link DXS-3250 switches to be stacked together* as a unit, regardless of its physical environment management.

Advanced QoS
DXS-3250 provides a strong and consistent QoS/CoS, supports 8 priority queues for 802.1p/ToS/DiffServ, classification and marking based on MAC SA/DA, intellectual property SA/DA, and/or TCP/ UDP.It also provides extensive support for GARP/GVRP, 802.1Q, port-based VLANs for device groups up to 4,000 yuan.

Centralized AP management
xStack DXS-3250 is the centralized management capability of compatible wireless access points.It will no longer be necessary for each individual''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s access point to be configured independently.The entire wireless network can now be managed through a single interface.xStack DXS-3250 includes support for real-time monitoring and automatic discovery of access points, providing visibility into the utilization and performance of WLAN users and devices.

Wireless security
D-Link''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s xStack DXS-3250 provides enhanced wireless security features to ensure that your data is protected from hackers.Support WEP, WPA™ and WPA2™ encryption to ensure the privacy of network data.Rogue AP detection and containment, to ensure that only the AP you install can function on your network.AP detection allows “known” and “rogue” to classify and identify APs.The access point used by the switch, which continuously scans, attempts to find unauthorized wireless nodes, and promotes the transmission of notifications and/or interference of rogue signals on broadcast channels.

Seamless wireless roaming
When a user is roaming between APs connected to different broadcast domains, the user''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s IP address is no longer valid, and then migrates to a new AP.This means that the user’s device（Laptop, PDA, VoIP phone）, Will need to change its IP address, which breaks up the active meeting.With “always connected” devices such as VoIP phones and PDAs, this can create a huge problem.A solution is needed to provide seamless roaming between access points in different subnets to basically maintain active sessions and VoIP calls.

This problem with the D-Link DXS-3250 address enables the configuration of the AP and supports direct access to the switch itself.This allows users to seamlessly move communication and movement between access points.To the user''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s PDA or VoIP phone, mobile seems to be between APs if it is a single broadcast domain.This means that the user''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s device will retain its VLAN membership and IP address to ensure uninterrupted communication.

Switch roaming
xStack DXS-3250 supports roaming radio stations between access points connected to different switches.The seamless roaming process between switches makes the VLAN member of the reserved station when roaming between the access points connected to multiple switches in the entire network（IP subnet）And QoS parameters.When creating a large WLAN environment, such as a campus or office in a multi-storey building, roaming between switches is a very useful function.Roaming between switches allows users complete freedom without disconnection or re-authentication of roaming between switches located in different buildings or different floors.

Supported access points
xStack 3200 series wireless switch line design, DWL-2130AP, DWL-2230AP, DWL-7130AP, DWL-7230AP wireless thin access point provides a flexible solution to integrate xStack 3200 series wireless switch series.These access points have different models of each topology, provide multiple functions of 802.11a/b/g and support Power over Ethernet（PoE）Power support range.When used in combination with xStack DXS/DWS-3227, DXS/DWS-3227P, DXS/DWS-3250, these thin access points unlock wireless switching power supplies and promote advanced functions such as centralized management of APs and seamless layer 3 roamingAnd rogue AP detection and interference.

XStack 3200 wireless AP license
All DWS-3227, DWS-3227P, and DWS-3250 models are wirelessly enabled and support up to 10 access points and ship standards.All DXS-3227, DXS-3227P, DXS-3250 models need to purchase a license（DS-710）Unlocked wireless switching function and 10 AP support.

The xStack 3200 series is a real solution for your growth.As the business develops, it becomes necessary to require a larger wireless coverage area. All xStack 3200 series switches can be upgraded（Support 50 simple DS-725 license keys（Support 25 AP）Or DS-750 license transferAPS）.For the end user to purchase the license key is simple, as long as your dealer or D-Link sales representative contact.Distributors can contact them for additional information or purchase distribution channels.

*Future version

Features
“Wireless Ready”Layer 2+switch seamless roaming and centralized AP and wired network management
48 10/100/1000 ports of 4 Combo SFP in 1RU chassis
Optional dual 10 Gigabit stacking via fiber XFP or copper CX-4/uplink
Pre-configured ACL protection against known attacks
specification
Product specification
DXS-3250 L2 + hosting 48 10/100/1000Mbps ports, 4 Combo SFP ports and 2 optional wireless switches 10 Gigabit copper/fiber uplink
 
MAC address table •16K
 
Switch fabric •240Gbps
 
VLAN• supports up to 4K VLAN groups（Port-based, GARP/GVRP based on the Q-Q value of the 802.1v protocol, 802.1Q mark）
 
Priority queue •8 queue（802.1p/TOS/DiffServ）-Strict priority or weighted round-robin queue scheduling
 
Classification of QoS/ACL • based on MAC address, IP, TCP/UDP, payload, port level, DSCP, 802.1p priority
 
Multicast supports IGMP snooping, multicast TV VLAN
 
End-to-end flow control • flow control across packet processors
 
Link aggregation balance • MAC-based SA/DA IP-based SA/DA,
 
MAC address table search • search reveals the MAC/IP of the source unit/port
 
IP to MAC binding • show IP to MAC binding
 
Port utilization • measure traffic, total port capacity
 
Single-port stacking • chain topology
 
Trojan/DoS attack to prevent MAC spoofing, IP spoofing
 
Signature-based detection • illegal TCP/ICMP packet inspection, inspection protocol, Mars address inspection, well-known DOS virus, TCP frame with source port 1024 SYN flag, spoofing server, Stacheldraht distribution DoS attack client, Invasor Trojan, Orifice Trojan
 
Interface options
RJ-45 10BASE-T, 100BASE-TX and 1000BASE-T
 
LC• use optional standard small pluggable（SFP）Gigabit transceiver
•Use optional 10 Gigabit XFP transceiver
 
CX-4• use optional 10GBASE-CX-4 module
 
Retirement protection plan • with optional redundant power supply（DPS-500）
 
wireless switch
The Associated Press License • supports optional 10, 25 and 50 AP licenses
 
Maximum allowed access switch or 50% stack of AP 50 AP per
 
WLAN encrypted WPA™, WPA2™, WEP（64&128 bit）
 
Wireless LAN security 802.1x certification
 
Port-based malicious AP detection and radio based
 
Support roaming • internal switch, inter-band, inter-switch
 
802.11 supports 802.11a, 802.11b, 802.11g（Support AP）
 
The maximum user of each AP is 30 WLAN users at the same time.Maximum switch/stack per 600
 
•256 wireless VLAN
 
SSID of each AP•16 concurrent SSID
 
WLAN management HTTP, HTTPS, Telnet, SSH and SNMP
 
Syslog events • connection success/failure, station roaming/AP connection, error rate above threshold, encryption error
 
•errors, all events, per station? ?Bearing the P record filter
 
Additional features • automatic channel allocation, dynamic load balancing
 
Network protocols and standards
In band and out-of-band TELNET, CLI/console, remote monitoring, web-based HTTP, SNMPv1/v2/v3, system log, port mirroring, TFTP client, BOOTP client, DHCP client, BOOTP/DHCP relay agent , DNS client
 
IEEE•802.3 Ethernet, 802.3u Fast Ethernet, Gigabit Ethernet 802.3ab standard, 802.3z Gigabit Ethernet, 10GBASE-CX-4, 802.3ak 802.3ae standard 10GbE, 802.1D spanning tree, 802.1w Rapid spanning tree, 802.1p priority marking, 802.1Q802.1v protocol VLAN, 802.3ad link aggregation, 802.3x flow control, 802.1x port-based authentication, 802.1X MAC-based authentication, 802.1s multiple spanning tree VLAN
 
IETF RFC 1157 SNMP RFC 1112/2236 runs IGMPv1/2, RFC 1757 RMON（4 groups）, RFC 1493 bridge MIB, RFC 1213 MIB II, RFC 793 TCP, RFC 826 ARP, RFC 854 remote login, Diffserv
 
Summary of Electromechanical Emissions
Emission • CE mark, FCC Class A
 
Power supply 100-240VAC, 50/60 Hz internal universal
 
Power consumption 90 watts
 
Safety certification body and environment
Chief Safety Engineer/LVD, UL certification（Comply with UL1950）/ CUL certification
 
•Working temperature: 32°?9?1122°F（0°?9?150°C）
•Storage: -13° to 131 degrees Fahrenheit（-20° to 70°C）
 
Humidity • working temperature: 0% to 9 to 190% RH, non-condensing
• Storage: 0%? 9? 195%RH, non-condensing
 
Physical specifications
size（Width x depth x height）•?6?7?6?716.93in x 17.32in x 1.77in（430mm x440mm x 45mm）
 
Height •1U
 
Weight •13.4 pounds（6.08 kg）