DES-3226SEOL EOS

24-port 10/100Mbps Managed Standalone Switch with Module Slot
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Description

24 10/100Mbps Ports for Workstation Connection The switch provides 24 10/100Mbps ports supporting auto-sensing and auto-negotiation of network speeds and full/half duplex. These ports can connect to workstations and print servers, giving each a dedicated bandwidth. All ports support plug-and-play auto MDI/MDIX, allowing you to connect to any node device without the need to change your usual straight-through twisted-pair cables.

Switch Stacking & GBIC Port
The switch provides an open slot for installation of a stack module, which is equipped with a stacking port and a GBIC port. The stacking port is for switch stacking. The GBIC port provides for flexible deployment of multi-mode or extended cable-length single-mode fiber. At 2000Mbps full duplex, this port provides for Gigabit server or fiber backbone attachment.

Scalable Expansion
Up to 13 DES-3226S can be stacked together in a ring architecture. You can add units to reach maximum 312 10/100Mbps ports and 13 GBIC ports per stack. The switches are stacked together through high-speed stack cables, allowing the entire stack to perform as a single entity.

Fault Tolerant Star Stacking
Alternately, you can stack a DGS-3212SR(L2 switch) or DGS-3312SR (L3 switch) Stacking Master with 12 DES-3226S, to get 288 10/100BASE-TX ports, plus 12 Gigabit ports for server and backbone attachment. This star stacking scheme allows packets to be switched directly through the Stacking Master. Fault tolerance is provided, as any single broken link between a switch and the Stacking Master will not affect the rest of the links of the stack.

Flow Control to Prevent Packet Loss
The switch supports standard IEEE 802.3x Flow Control. Working in conjunction with buf fer overrun auto-detection, this full-duplex data transfer mode provides protection against possible data loss for 802.3x supported servers directly connected to the switch.

Port Trunks for Aggregated Bandwidths
With low cost per port, port trunking provides an easy and economical alternative solution for server connection to attain Gigabit bandwidth. Up to 8 10/100Mbps ports or 8 Gigabit ports can be combined together to create a multi-link load-sharing aggregated bandwidth to a server. Trunked ports can span multiple units of the stack for fail-safe connectivity to mission-critical servers and the network center.

VLANs for Enhanced Security & Performance
VLANs improve security and bandwidth utilization by limiting the broadcast domains and confining intra-group traffic within their segments. To segment up the network, workstations supporting VLAN can be grouped into different Virtual  LANs (VLANs). The switch also supports asymmetric VLAN and GVRP (GARP VLAN Registration Protocol) for automatic VLAN configuration distribution.

Advanced Network Access Management

Port-based and MAC-based 802.1x features enable user authentication for each network access attempt. Port Security features allow you to limit the number of MAC addresses per port in order to control the number of stations for each port. Static MAC addresses can be defined for each port to ensure only registered machines are allowed to access. By enabling both of these features, you can establish an access mechanism based on user and machine identities, as well as control the number of access stations.

Multi-layer Access Control List (ACL)
Access Control Lists (ACL) allow the network administrator to define policies on network traffic control. The switch supports comprehensive and multi-layer ACLs, providing a powerful tool for network management. For example, the switch can be set to block malicious bulk traffic from specific clients (based either on MAC or IP addresses). Or during a virus attack, the switch can be set to restrict its flooding based on a virus's unique pattern (TCP/UDP port number).

Advanced QoS Support
The switch supports not only Layer 2 802.1p Priority Queue control, but also a variety of ways to prioritize network packets. Multi-layer information from L2 to L4 can be used to classify packet priorities. This function support allows you to attach IP telephony devices or video servers to the switch to run delay-sensitive applications like video conference.

Flexible Transmission Scheduling
The switch supports 2 methods of packet transmission scheduling: Strict Scheduling and Round-Robin. You can select to use Strict Scheduling  to strictly enforce your priority queues, or Round-Robin to address bandwidth limitations at peak time. Round-Robin allows each queue to be assigned a different percentage of the output port's bandwidth, so that lower-priority queues are not denied access to buffer space and port bandwidth.

IGMP Snooping for Broadcast Control
The switch listens to IGMP (Internet Group Management Protocol) messages to build mapping table and associate forwarding filters. It dynamically configures the switch ports to forward IP multicast traffic only to those ports associated with multicast hosts.

Broadcast Storm Control
To limit too many broadcast/multicast flooding in the network, broadcast/multicast storm control is configured to screen excessive traffic. Threshold values are available to control the rate limit for each port. Packets are discarded if the respective count exceeds the configured upper threshold in a given time interval. The possible range of upper threshold is from 0 to 255k packets per second.

Port Mirroring
This function allows you to mirror adjacent ports for the purpose of analyzing incoming and outgoing packets where packet patterns can be studied. 802.1D Compatible & 802.1w Rapid Spanning Tree For mission critical environments with multiple switches supporting STP, you can configure the stack of switches with a redundant backup bridge path, so transmission and reception of packets can be guaranteed in event of any fail-over switch on the network.

Multiple Management Interfaces
SNMP v.1, v.2c, v .3 network management is supported, using the built-in MIBs. RMON monitoring and SYSLOG are provided for effective central management. The switch also provides a Command Line Interface (CLI) and a Web-based GUI. CLI enables quick system configuration for administrators familiar with command line operation. The embedded Web-based interface allows you to easily access the switch from anywhere on the network and trouble shoot it in real-time. You can, for example, browse the MAC address table via the Web browser and perform searching to identify the location of any workstation. Port utilization graphs provide real-time traffic monitoring and diagnostic information.

Optional Ports (Stand-alone Configuration)
If you configure the DES-3226S as a stand-alone switch, you can install the following modules in the open slot:
- 2-port Fast Ethernet module (10/100BASE-TX)
- 1 or 2-port Fast Ethernet multi-mode fiber module (100BASE-FX)
- 1 or 2-port Fast Ethernet single-mode Fiber module (100BASE-FX)
- 2-port Gigabit fiber module (1000BASE-SX)
- 2-port Gigabit fiber module (1000BASE-LX)
- 2-port Gigabit copper module (1000BASE-T)
- 2-port GBIC module
 

General features

General
Hardware

Protocol
CSMA/CD
    
Data Transfer Rates

- Ethernet:
  10Mbps (half duplex)
  20Mbps (full duplex)
- Fast Ethernet:
  100Mbps (half duplex)
  200Mbps (full duplex)
- Gigabit Ethernet:
  2000Mbps (full duplex)
    
Basic Configuration
- 24 auto-sensing 10/100Mbps ports (built-in)
- 1 open slot

Switch Fabric
8.8 Gbps

LED (per device)
- Power
- Console

Built-in Ports Supported Functions
- IEEE 802.3 10BASE-T/802.3u 100BASE-TX standards
- Full/half duplex support with ANSI/IEEE 802.3 NWay auto-negotiation
- IEEE 802.3x Flow Control in full-duplex, back pressure in half-duplex
- MDI-II/MDI-X auto-sensing for all twisted-pair ports
- Auto-correction of twisted-pair Rx reverse polarity
- Port trunking: up to 8 ports per trunk, up to 6 trunks per switch
- 10BASE-T cables:
  UTP Cat. 3, 4, 5 (100 m max.)
- 100BASE-TX cables:
  UTP Cat. 5 (100 m max.)
- LED report (per port):
  10/100Mbps speed
  Link/Act

Optional Modules
DES-332GS Stack + GBIC Module
- 1 stacking port
- 1 GBIC port (IEEE 802.3z/802.3ab standards)
- Stackable units: 13 DES-3226S switches per stack (Ring), 12 units (star)
- Stacking method: ring or star (DGS-3212SR or DGS-3312SR Stacking
  Master needed for star stacking)
- Full duplex support for GBIC port
- IEEE 802.3x Flow Control (GBIC port)
- Stacking cable: proprietary IEEE 1394 cable (provided)
- Network cables (GBIC port): single-mode and multi-mode fiber
- LED report (per port): Link/Act (GBIC port)

DES-131F/132F Fast Ethernet Fiber Modules

- IEEE 802.3u 100BASE-FX standard
- 1or 2 100Mbps fiber ports (SC connectors)
- Full duplex support
- IEEE 802.3x Flow Control
- Cables: 50, 62.5/125-micron multi-mode fiber (2 km max.)
- LED report (per port): Link/Act

DES-131FL/132FL Fast Ethernet Fiber Modules
- IEEE 802.3u 100BASE-FX standard
- 1or 2 100Mbps fiber ports (SC connectors)
- Full duplex support
- IEEE 802.3x Flow Control
- Cables: 9-micron single-mode fiber (15 km max.)
- LED report (per port): Link/Act

DES-132G Gigabit Fiber Module
- IEEE 802.3z 1000BASE-SX standard
- 2 Gigabit fiber ports (SC connectors)
- Full duplex support
- IEEE 802.3x Flow Control
- Cables: 50/125 micron multi-mode fiber (525 m max.), 62.5/125 micron
  multi-mode fiber (275 m max.)
- LED report (per port): Link/Act

DES-132GL Gigabit Fiber Module
- IEEE 802.3z 1000BASE-LX standard
- 2 Gigabit fiber ports (SC connectors)
- Full duplex support
- IEEE 802.3x Flow Control
- Cables: single-mode fiber (5 km max.)
- LED report (per port): Link/Act

DES-132T Gigabit Copper Module
- IEEE 802.3 10BASE-T/802.3u 100BASE-TX/IEEE 802.3ab 1000BASE-T standards
- 2 auto-sensing 10/100/1000Mbps ports
- Full/half duplex support with ANSI/IEEE 802.3 NWay auto-negotiation
- IEEE 802.3x Flow Control in full-duplex, back pressure in half-duplex
- 10BASE-T/100BASE-TX: full/half duplex
- 1000BASE-T: full duplex
- MDI-II/MDI-X auto-sensing for all twisted-pair ports
- Auto-correction of twisted-pair Rx reverse polarity
- 10BASE-T cables:
  UTP Cat. 3, 4, 5 (100 m max.)
- 100BASE-TX/1000BASE-T cables:
  UTP Cat. 5/Cat. 5e (100 m max.)
- LED report (per port):
  100/1000Mbps speed
  Link/Act

DES-132 10/100Mbps Fast Ethernet Module
- IEEE 802.3 10BASE-T/802.3u 100BASE-TX standards
- 2 10/100Mbps ports
- IEEE 802.3x Flow Control in full-duplex, back pressure in half-duplex
- Auto MDI/MDIX for each port

DES-132GB GBIC Module
- IEEE 802.3z standard
- 2 GBIC-based ports for installation of 1000BASE-SX and 1000BASE-LX
  PHY modules
- Full duplex support
- IEEE 802.3x Flow Control
- Cables: single-mode and multi-mode fiber
- LED report (per port): Link/Act

Software
VLAN

- IEEE 802.1Q Tagged VLAN
- Port-based VLAN
- Number of VLANs: 255 per device (max.)

Priority Queues
- Standard: IEEE 802.1p
- Number of queues: 4

Spanning Tree
- IEEE 802.1D compatible
- IEEE 802.1W Rapid Spanning Tree

Multicast
- IGMP Snooping

Port Trunks
- Number of ports per trunk: 8 (max.)
- Number of trunks: 6 (max.)
- Operation mode: load sharing

Traffic Classification (CoS)
Can be based on user-definable application types:
- TOS
- Diffserv (DSCP)
- Port-based
- MAC address
- IP address
- TCP/UDP port number

Network Access Management
- Port security features
- 802.1x user authentication
- RADIUS client (for 802.1x authentication)
- Multi-layer ACL based on:
  TOS
  Diffserv (DSCP)
  MAC address
  IP address
  User-definable applications

Performance
Transmission Method

Store-and-forward
    
MAC Address Table
8K entries per device

MAC Address Learning
- Dynamic entries: automatic update
- Static entries: user-defined

Packet Filtering/Forwarding Rates (half duplex)
- Ethernet: 14,880 pps per port
- Fast Ethernet: 148,810 pps per port
- Gigabit Ethernet: 1,488,100 pps per port
    
RAM Buffer
- v.B1: 8MB per device (excluding optional modules)
- v.C1: 16MB per device (excluding optional modules)

Configuration & Management
Management Support

- SNMP-based management v.1, v.2c, v .3
- Web-based management
- CLI (command line interface)
- RMON monitoring
- Telnet (up to 8 sessions)
- Bandwidth control

MIBs
- MIB-II (RFC 1213)
- Bridge MIB (RFC 1493)
- RMON MIB (RFC 1757)
- 802.1Q VLAN MIB (RFC 2674)
- IGMP MIB (RFC 2833)
- If MIB (RFC 2233)
- Ethernet-like MIB (RFC 2358) - dot3statsTable
- D-Link enterprise MIB

RMON Groups
1, 2, 3, 9 (Alarm, Statistics, History, Event)

IP Number Self-identification

Through DHCP client, Bootp client

Firmware Upgrade
TFTP

Console Port
DB-9 RS-232 DCE
 



Power Input
- 100  -  240 VAC, 50/60 Hz
- Internal universal power supply
    
Power Consumption
29 Watts (max.)

Ventilation
40 x 40 mm DC fan

Operating Temperature
0 - 50  C (32   -  122  F)
    
Storage Temperature
-25  - 55  C (13   -  131  F)

Humidity
5%  -  95% non-condensing
    
Dimensions
- 441 x 210 x 43 mm (17.36 x 8.27 x 1.69 inches)
- 19-inch rack-mount width, 1 U height
    
Weight
2.5 kg (5.51 lb.) (without module installed)

Emission (EMI)

- FCC Class A
- CE Class A
- C-Tick Class A
    
Safety
CSA International

Certificates

Order info

10/100Mbps Layer 2 Stackable Switch
DES-3226S
   24 10/100Mbps ports + 1 open slot
 
Optional Modules
DES-332GS  1 stacking port + 1 GBIC port
DES-132       2 10/100Mbps ports
DES-131F     1 100BASE-FX multi-mode fiber port (SC connector)
DES-132F     2 100BASE-FX multi-mode fiber ports (SC connectors)
DES-131FL   1 100BASE-FX single-mode fiber port (SC connector)
DES-132FL   2 100BASE-FX single-mode fiber ports (SC connectors) 
DES-132G     2 1000BASE-SX Gigabit fiber ports (SC type connectors)
DES-132GL  2 1000BASE-LX Gigabit fiber ports (SC type connectors)
DES-132T     2 10BASE-T/100BASE-TX/1000BASE-T Gigabit copper ports
DES-132GB  2 GBIC-based ports

Optional GBIC Transceivers
DGS-701  For 1000BASE-SX, multi-mode fiber, 550 m max.
DGS-702  For 1000BASE-LX, single-mode fiber, 5 km max.
DGS-703  For 1000BASE-LX, single-mode fiber, 10 km max.
DGS-704  For 1000BASE-LX, single-mode fiber, 30 km max.
DGS-708  For 1000BASE-LX, single-mode fiber, 70 km max.
DGS-711  For 1000BASE-T, Cat. 5 cable, 100 m max.
DGS-707  For 1000BASE-SX, multi-mode fiber, 550 m max.

Optional Stacking Master Switch
DGS-3212SR
  L2 switch with 4 10/100/1000BASE-T ports, 4 combo SFP (mini GBIC), 2 expansion slots, redundant power support
DGS-3312SR  L3 switch with 4 10/100/1000BASE-T ports, 4 combo SFP (mini GBIC, 2 expansion slots, redundant power support
DEM-540        4 stacking ports (for use with DGS-3212SR, DGS-3312SR)
DPS-200          Redundant power supply (for use with DGS-3212SR, DGS-3312SR)

Pictures

DES-3226S
Front view

Downloads

Support Resources