Cisco Systems DGS-1224T manual Gigabit Ethernet Technology, Introduction

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INTRODUCTION

This chapter describes the features of the DGS-1224T and provides 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, flow control, and management objects, but with a tenfold increase in theoretical throughput 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, and trained personnel.

The increased speed and extra bandwidth offered by Gigabit Ethernet is essential to helping solve 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 LinkDGS-1224T Building Networks for PeopleTable of Contents Page Page Purpose Terms/UsageGigabit Ethernet Technology IntroductionFast Ethernet Technology Switching Technology Ieee 802.1Q VlanFeatures IEEE802.1Q VlanTechnical Specifications Flash Memory Ieee 802.3 complianceEmission EMI and Safety Certifications Temperature Storage TemperaturePower consumption Physical & EnvironmentInstallation UnpackingRack Mounting Attach the adhesive rubber pads to the bottomConnecting Network Cable Attach the mounting brackets to the SwitchAC Power LED Indicator Front PanelRear panel of the Switch Rear PanelPower and System LEDs Understanding LED IndicatorsBlinking Installing the SmartConsole Utility Supported web browsersSmartConsole Utility Features Menu ToolbarPage Definitions of the Discovery List features Discovery ListMonitor List Definitions of the Monitor List functions and terms View trapDevice Setting Trap informationThis space has been intentionally reserved for notes Firmware Upgrade Login Web-based UtilityLog in screen Tool Menu Tool MenuTool Menu Configure Backup and Restore Setup Menu Tool Menu System RebootSystem System Setting System Trap SettingSystem Trap Setting System Port Setting System Port SettingSystem Snmp Setting System Snmp Setting System Password Access Control System Password Access ControlConfiguration Jumbo Frame Configuration 802.1Q VlanConfiguration 802.1Q Vlan Default Setting Configuration 802.1Q Vlan Example VIDs Configuration Trunking Configuration Igmp SnoopingConfiguration Igmp Snooping Configuration Page Configuration Igmp Router port Settings Configuration Igmp Multicast Entry Table Configuration 802.1D Spanning Tree Configuration Spanning TreePage Configuration Port Mirroring Configuration Port MirroringQoS 802.1p Default Priority Security Safeguard EngineSecurity Safeguard Engine Security Broadcast Storm ControlSecurity 802.1X Setting Security Broadcast Storm ControlQoS 802.1X Setting Page Security Mac Address Table Static MAC Security Static Mac AddressSecurity Mac Address Table Dynamic Forwarding Table Security Dynamic Forwarding TableMonitoring Statistics Monitoring StatisticsMonitoring Port Statistics