D-Link DES-1252 user manual Gigabit Ethernet Technology, Introduction

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INTRODUCTION

This chapter will describe the features of the DES-1252 and provide some background information about Ethernet/Fast Ethernet/Gigabit Ethernet switching technology.

Gigabit Ethernet Technology

Gigabit Ethernet is an extension of IEEE 802.3 Ethernet utilizing the same packet structure, format, and support for CSMA/CD protocol, full duplex, and management objects, but with a tenfold increase in theoretical throughput of over 100-Mbps Fast Ethernet and a hundredfold increase over 10-Mbps Ethernet. Since it is compatible with all 10-Mbps and 100-Mbps Ethernet environments, Gigabit Ethernet provides a straightforward upgrade without wasting existing investments in hardware, software, or trained personnel.

The increased speed and extra bandwidth offered by Gigabit Ethernet is essential to help solving network bottlenecks that frequently develop as more advanced computer users and newer applications continue to demand greater network resources. Upgrading key components, such as backbone connections and servers to Gigabit Ethernet technology can greatly improve network response times as well as significantly speed up the traffic between subnets.

Gigabit Ethernet enables fast optical fiber connections to support video conferencing, complex imaging, and similar data-intensive applications. Likewise, since data transfers occur 10 times faster than Fast Ethernet, servers outfitted with Gigabit Ethernet NIC’s are able to perform 10 times the number of operations in the same amount of time.

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Contents DES-1252 Table of Contents Page Iii Page Terms/Usage PurposeIntroduction Gigabit Ethernet TechnologyFast Ethernet Technology Switching TechnologyIEEE802.1X Port-based Access Control FeaturesMax. Forwarding Rate Technical SpecificationsKey Components / Performance Switching Capacity Forwarding ModeCombo ports Sdram for CPUFlash Memory Port Functions1000Mbps Copper Chassis DimensionsReset button on TemperatureHumidity Storage TemperaturePower consumption Emission EMI and Safety CertificationsUnpacking InstallationAttach the adhesive rubber pads to the bottom Rack MountingAttach the mounting brackets to the Switch Connecting Network CableAC Power 10/100 BASE-TX Twisted Pair Ports Port 1~48 Reset buttonLED Indicator Front PanelRear Panel AC Power Connector10/100/1000 BASE-T Twisted Pair Ports Port 51~52 Power and System LEDs Understanding LED IndicatorsPower LEDs Ports 1 ~ 48 Status LEDs Link/Act Ports 51~52 10/100/1000 Base-T LEDs Link/Act Link/Act for UTP ports10/100Mbps shown in Amber Light Page Supported web browsers Installing the SmartConsole UtilityMenu Toolbar SmartConsole Utility FeaturesOption includes Refresh Time and Group Interval functions Discovery List Definitions of the Discovery List featuresDefinitions of the Monitor List functions and terms Monitor ListView trap This space has been intentionally reserved for notes Device SettingFirmware Upgrade Web-based Management LoginLog in screen Tool Menu Tool MenuTool Menu Firmware Backup and Upload Setup MenuC P System System SettingSystem System Setting System Trap SettingSystem Trap Setting System Port SettingSystem Port Setting System Snmp Setting System Snmp Setting Configuration 802.1Q Vlan System Password Access ControlConfiguration 802.1Q Vlan Default Setting Configuration 802.1Q Vlan Add VID Configuration 802.1Q Vlan VID Assignments Configuration TrunkingConfiguration Igmp Snooping Configuration Configuration Igmp SnoopingPage Page Configuration Igmp Router port Settings Configuration 802.1D Spanning TreeConfiguration Spanning Tree Page Configuration Port Mirroring Configuration Port MirroringSecurity Safeguard Engine QoS 802.1p Default PrioritySecurity Broadcast Storm Control Security 802.1X SettingSecurity 802.1X Setting Page Security Static Mac Address Security Mac Address Table Static MacMonitoring Statistics Security Mac Address Table Dynamic Forwarding TableMonitoring Statistics Monitoring Port Statistics