Linksys SLM224G4S (G5), SLM248G4S (G5) Appendix a About Gigabit Ethernet Fiber Optic Cabling

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Appendix A

About Gigabit Ethernet and Fiber Optic Cabling

Appendix A:

About Gigabit Ethernet

and Fiber Optic Cabling

Gigabit Ethernet

Gigabit Ethernet runs at speeds of 1Gbps (Gigabit per second), ten times faster than 100Mbps Fast Ethernet, but it still integrates seamlessly with 100Mbps Fast Ethernet hardware. Users can connect Gigabit Ethernet hardware with either fiber optic cabling or copper Category 5e cabling, with fiber optics more suited for network backbones. As the Gigabit standard gradually integrates into existing networks, current computer applications will enjoy faster access time for network data, hardware, and Internet connections.

Fiber Optic Cabling

Fiber optic cabling is made from flexible, optically efficient strands of glass and coated with a layer of rubber tubing, fiber optics use photons of light instead of electrons to send and receive data. Although fiber is physically capable of carrying terabits of data per second, the signaling hardware currently on the market can handle no more than a few gigabits of data per second.

Fiber cables come with two main connector types. The most commonly used fiber optic cable is multi-mode fiber cable (MMF), with a 62,5 micron fiber optic core. Single‑mode fiber cabling is somewhat more efficient than multi-mode but far more expensive, due to its smaller optic core that helps retain the intensity of traveling light signals. A fiber connection always require two fiber cables: one transmits data, and the other receives it.

Each fiber optic cable is tipped with a connector that fits into a fiber port on a network adapter, hub, or switch. In the USA, most cables use a square SC connector that slides and locks into place when plugged into a port or connected to another cable. In Europe, the round ST connector is more prevalent.

For Gigabit Ethernet, you must use the Linksys MGBT1, MGBSX1, or MGBLH1 miniGBIC modules with the Linksys Gigabit Switches. The MGBSX1 and the MGBLH1 require fiber cabling with LC connectors, and the MGBT1 requires a Category 5e Ethernet cable with an RJ-45 connector.

For Fast Ethernet, you must use the MFEFX1 (100BASE-FX) or MFELX1 (100BASE-LX) SFP transceivers.

24/48-Port 10/100 + 4-Port Gigabit Resilient Clustering Smart Switch with 2 Combo SFPs

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Contents Port or 48-Port 10/100 + Online Resources About This GuideAbout This Guide Icon DescriptionsTable of Contents Snmp Appendix C Glossary Appendix B About Switch StackingGigabit Ethernet Fiber Optic Cabling Appendix G Contact Information Appendix D SpecificationsAppendix E Warranty Information Appendix F Regulatory InformationIntroduction ChapterBack Panel Chapter Product OverviewProduct Overview Front PanelSLM248G4S Placement Options Chapter InstallationInstallation Pre-Installation ConsiderationsDesktop Placement Hardware InstallationRack-Mount Placement Configuring Stacking Mode Uplinking the SwitchConnect port G1 on Unit 2 to port G2 on Unit Replacing a Stacked SwitchConnect port G1 on Unit 3 to port G2 on Unit Login screen appears. Proceed to the Login section below Chapter Configuration Using Console InterfaceUsing the HyperTerminal Application Using telnetSystem Configuration Menu How to Use the Console InterfaceLogin Switch Main MenuUser & Password Settings Management SettingsSystem Information IP Configuration Security SettingsFile Management Network ConfigurationReboot System Restore System Default SettingsStack Configuration Help Port ConfigurationSystem Mode Port StatusDevice Information Chapter Configuration Using Web-based UtilitySetup Setup SummaryDNS Server The IP address of your ISP’s server that Setup ZoomSetup Network Settings Default Gateway The IP address default 0.0.0.0Daylight Saving Setup TimeIdentification Local TimeSntp Servers Setup Stack ManagementPort Management Port Settings Port ManagementPort Configuration Port Management Link Aggregation LAG ConfigurationPort Priority Lacp screen contains fields for configuring Lacp LAGsPort Management Lacp Global ParameterLacp Port Table Vlan Management Port SettingsVlan Management Vlan Management Create VlanVlan Management Vlan to Port Vlan Management Port to VlanJoin Vlan to Port Statistics Rmon Statistics StatisticsRmon History Table Statistics Rmon HistoryRmon History Log TableAdd Alarm Statistics Rmon AlarmsStatistics Rmon Events Statistics Port UtilizationStatistics Interface Statistics Ethernet-like Security 802.1x SettingsSecurity InterfaceSecurity Port Security Setting TimerWeb IP Filtering Security Management Access ListSecurity Radius Security Storm ControlBroadcast Only Counts only Broadcast traffic CoS Settings screen is used to enable or disable CoS QoS CoS SettingsCoS Settings CoS DefaultQoS Dscp Settings QoS Queue SettingsQoS Bandwidth Spanning Tree QoS Basic ModeSpanning Tree STP Status Spanning Tree Global STP Spanning Tree STP Port SettingsGlobal Setting Bridge SettingsIgmp Global Vlan Igmp SettingsMulticast Multicast Igmp SnoopingMulticast Bridge Multicast Forward All Multicast Bridge MulticastSnmp Views Snmp Global ParametersSnmp Group Membership Snmp Group ProfileUser Name Provides a user-defined local user list Snmp Communities Advanced Table Snmp Notification FilterSnmp Notification Recipient Base TableLocal User Edit AdminAdmin User Authentication User AuthenticationClear Table If selected, this clears the MAC Address table Admin Static AddressAdmin Dynamic Address Secure The entry is defined for locked portsAdmin Cable Test Admin Port MirroringQuery Admin Save Configuration Admin Reboot Admin Firmware UpgradeAdmin Factory Default Admin Server Logs Admin LoggingAdmin Memory Logs Logout Admin Flash LogsFiber Optic Cabling Appendix aAppendix a About Gigabit Ethernet Fiber Optic Cabling Gigabit EthernetStack Building Quick Start Appendix B About Switch StackingAbout Switch Stacking Appendix BUnit ID Allocation Advanced StackingStack Resiliency Unit IDsMaster Discovery Stack Units Startup ProcessMaster Election Replacing a Failed Stack Member in a Running Stack Unit and Port ConfigurationUser Controls Stacking ExamplesStack Master Failure and Replacement Splitting a Stack Subgroup Contains Both Master Unit and Backup Master UnitBoth Stacks Kept Running During Insertion Merging Two StacksInserting Too Many Units Stacking Cable FailureAppendix C Glossary Appendix CGlossary Glossary Mail protocol on the Internet Packet a unit of data sent over a networkAppendix C Specifications Appendix D SpecificationsAppendix D 802.3z Gigabit Ethernet DimensionsUnit Weight SLM224G4S 1,927 kg 802.3 10BASE-T EthernetAppendix E Warranty InformationLimited Warranty Obtaining Warranty ServiceTechnical Support Warranty InformationRegulatory Information Appendix FRegulatory Information Appendix F Norsk Norwegian Miljøinformasjon for kunder i EU Appendix F Contact Information Appendix G8012510A-AI