DES-3326SEOL EOS

24-Port Layer 3 Fast Ethernet Stackable Switch With Redundant Power Support

Tanımlama

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 auto MDI-II/MDI-X uplink, allowing you to connect to workstations, servers, or other switches from any port 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 DES-332GS 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 gives you Gigabit server connection or attachment to a fiber backbone.

Scalable Expansion

Up to 6 DES-3326S can be stacked together. Y ou can add units to reach maximum 144 10/100Mbps ports and 6 GBIC-based ports per stack. The switches are stacked together through high-speed stack cables that provide gigabit per second backplane, allowing the entire stack to perform as a single entity.

Wire-speed IP Routing
The DES-3326S is designed for basic IP routing, with instant support for Windows, Unix and Internet environments. It provides wire-speed non-blocking switch fabrics with hardware-based packet filtering/forwarding. Packet routing is performed by on-board ASICs at speeds many times faster than CPU-based routers. 

Seamless Integration
The DES-3326S can be instantly integrated into any existing network for seamless integration of Layer 2 and Layer 3 packet switching. With multi-layer support for every port, you can start with Layer 2 switching, then upgrade to Layer 3 routing anytime by simply re-configuring the ports. You can flexibly segment the network into domains and sub-domains, using (1) subnet IDs and user IP numbers to route traffic, and (2) custom filters based on users' physical MAC addresses to filter extraneous traffic. At Layer 2, the switch uses auto-learned and user-defined MAC addresses to discard and forward packets. At Layer 3, it looks at the user-specified routing table to route packets to their destinations.

Ready for Voice, Video Applications
With Priority Queues and IP multicast (IGMP snooping) support, Quality of Services (QoS) can be guaranteed for successful execution of delay-sensitive applications like video conference and IP telephony.

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 6 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. Up to 6 multi-link trunks can be configured for a stack.

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 IEEE 802.1Q VLAN Tagging connected to the switch can be grouped into different Virtual LANs (VLANs). The switch also supports GVRP (GARP VLAN Registration Protocol) for automatic VLAN configuration distribution.

Quality of Service (QoS)
The DES-3326S provides for classification and prioritization of packets using 802.1p Priority Queue control (Layer 2), IP TOS, DSCP bits and IP source/destination addresses (Layer 3), and TCP/UDP port number (Layer 4). With QoS based on multi-layer information, your workstations and server can be attached to the switch and run delay-sensitive applications like video-conference and IP telephony.

Flexible Transmission Scheduling
The switch supports 2 methods of packet transmission scheduling: Strict Round-Robin (SRR) and Weighted Round-Robin (WRR). You can select to use SRR to strictly enforce your priority queues, or WRR to address bandwidth limitations at peak time. WRR 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. 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.

Spanning Tree Protocol
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.

SNMP & Web-based Management
The switch stack can be managed from within the LAN from an SNMP management station, and via an Internet from any workstation. Standard-based MIBs are built-in, allowing for monitoring and management from third-party management platforms. Web-based management program is built into the switch. RMON monitoring is through built-in RMON MIBs.

Optional Ports (Stand-alone Configuration)
If you configure the DES-3326S as a stand-alone switch, you can install the following modules in the open slot:
- 2-port Fast Ethernet multi-mode fiber module (100BASE-FX)
- 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)
- GBIC module (2 ports)

Gigabit Over Copper Twisted-pair
The optional Gigabit copper ports provide an inexpensive alternative solution to the fiber. Using your existing low-cost Cat. 5 twisted-pair wires as the transmission media, these ports allow you to instantly upgrade your servers to Gigabit capability without requiring you to install new, expensive fiber cables.

Genel Özellikler

Hardware
Optional Modules

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)
    
Topology
Star

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
- 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

DES-332GS Stack + GBIC Module
- 1 stacking port
- 1 GBIC port (IEEE 802.3z standard)
- Stackable units: 6 DES-3226S switches per stack
- Stacking method: ring
- 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-132F Fast Ethernet Fiber Module
- IEEE 802.3u 100BASE-FX standard
- 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-132FL Fast Ethernet Fiber Module
- IEEE 802.3u 100BASE-FX standard
- 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-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
IP Routing

- IP v4 support
- IP multi-netting
- Path MTU discovery
- IP Fragmentation support
- Routing protocols supported:
  Static routing
  RIP-1, RIP-2
  OSPF v.2

Quality of Service (QoS)
- Layer 2:
  Priority bits (IEEE 802.1p standard) in MAC destination &
  source addresses
  4 priority queues
- Layer 3:
  IP TOS and DSCP bits in IP  destination & source addresses
  Supports Diffserv
- Layer 4:
  TCP/UDP port number

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

Spanning Tree

Standard: IEEE 802.1D

Multicast
- IGMP v2
- IGMP Snooping
- DVMRP
- PIM-DM

Access Security (Layer 2 Filters)
- MAC based: user-specified MAC addresses
- VLAN based: ingress checking enable/disable
- Port based: MAC address learning per port enable/disable
- IEEE 802.1x Port-based Network Access Control *

MultiLink Trunking (MLT)
Enables grouping of links between the switch and another switch or a server to provide higher bandwidth of up to 8 10/100 ports or up to 6 GBIC ports with active redundant links. A multi-link is defined as trunked ports spanning multiple units of the stack for fail-safe connectivity to mission-critical servers and the network center.
- Number of Fast Ethernet ports per trunk: 8 (max.)
- Number of multi-link trunks per stack: 6 (max.)
- Operation mode: load sharing

Performance
Transmission Method

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

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

Routing Table

2K entries per device

Layer 2 Packet 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

Layer 3 Packet Forwarding Rate (half duplex)
6.6Mpps

RAM Buffer
8MB per device (excluding optional modules)

Configuration & Management
Management Methods & Standards

- SNMP v.1 & v .3 *
- Web-based (via web browser)
- RMON monitoring
- Telnet (up to 8 sessions)
- CLI (command line interface)

Management Security
Password enabled

MIBs
- MIB-II (RFC 1213)
- Bridge MIB (RFC 1493)
- RMON MIB (RFC 1757)
- RIP (RFC 1724)
- OSPF (RFC 1850)
- CIDR (RFC 2096)
- 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
- DHCP client
- Bootp client

Firmware Upgrade
TFTP

Console Port
DB-9 RS-232 DCE

Çözümler

Sipariş Bilgisi

10/100Mbps Stackable Layer 3 Switch
DES-3326S 
  24 10/100Mbps ports , 1 open slot

Optional Port Module
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-FL single-mode fiber port (SC connector)
DES-132FL  2 100BASE-FL 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 Transceiver
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.
 

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DES-3326S
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