GarrettCom Quad manual Switching Functionality, Filtering and Forwarding, Address Learning

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Magnum Quad-Series Fiber Switches

Installation and User Guide (06/03)

4.0OPERATION

This chapter describes the functions and operation of the Quad-Series.

4.1Switching Functionality

A Magnum Quad-Series provides switched connectivity at Ethernet wire-speed

among all of its ports. The Magnum Quad-Series supports10/100Mbs for copper media and 10 or 100Mb separate traffic domain for fiber port to maximize bandwidth utilization and network performance. All ports can communicate to all other ports in a Magnum Quad-Series, but local traffic on a port will not consume any of the bandwidth on any other port.

Magnum Quad-Series units are plug-and-play devices. There is no software configuring to be done at installation or for maintenance. The only hardware configuration settings are user options for UP-LINK on RJ-45 quad-port. Half / Full duplex mode and 10 or 100Mbps selection for the switched ports can be done through jumper settings inside the unit. The internal functions of both are described below.

Filtering and Forwarding

Each time a packet arrives on one of the switched ports, the decision is taken to either filter or to forward the packet. Packets whose source and destination addresses are on the same port segment will be filtered, constraining them to that one port and relieving the rest of the network from processing them. A packet whose destination address is on another port segment will be forwarded to the appropriate port, and will not be sent to the other ports where it is not needed. Traffic needed for maintaining the operation of the network (such as occasional multi-cast packets) is forwarded to all ports.

The Magnum Quad-Series Switches operate in the store-and-forward switching mode, which eliminates bad packets and enables peak performance to be achieved when there is heavy traffic on the network.

Address Learning

All 16-port Magnum Quad-Series units have address table capacity of 24K node addresses (12K for 8-port models), suitable for use in large networks. They are self- learning, so that as nodes are added or removed or moved from one segment to another, the Quad-Port Switch automatically keeps up with node locations.

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Contents Fiber Switches Trademarks GarrettCom, Inc Contacting GarrettCom, IncTable of Contents IntroductionIntroduction Magnum QUAD-SERIES QPM Personal Switches, 10/100Mb Personal Hubs, 10Mb seriesTechnical Specifications Agency Approvals Ordering Information Magnum Quad-Series Port ModulesInspecting the Package and Product Product Description Magnum Quad-Series Fiber Switches Magnum Quad-Series chassis modelsPorts Table-Top Quad-port modules, 100Mb fiber Quad-port modules, 10 MbFiber Quad-Port Module, RJ-45 copper Combo 3 + 1 Quad Port Modules, 3@RJ-45 and 1@fiberQPM-RJ45 QPRJ-MSCFrame Buffering and Latency Www . GarrettCom . com Features and Benefits „ Plug-and-Play installation for high performance switching„ Front-mounted LEDs, world-wide AC power supply „ 16-port, 12-port, 8-port and 4-port modelsApplications Example 1 Magnum QS580Example 2 Magnum 8-port QS5108 Example 3 Magnum 16-port QS5116 Locating Magnum Quad-Series Switches Location of 8-port Magnum QS580’s cooling fan exhaustConnecting Ethernet Media Connecting Fiber Optic ST-type, twist-lockIeee Standard Media Type Max. Distance Port Module Fiber CopperConnecting Fiber Optic SC-type, Snap-In Connecting Single-Mode Fiber OpticMedia Ieee Standard Table-Top or Shelf Mounting Wall or Vertical Surface Mounting, 8-port QS580Rack-mounting, models QS5108 and QS5116 Multiple Magnum QS5116 units rack-mounted in a 23 frame Jumper Settings for HDX/FDX Fiber ports, internal jumper settings Combo ports, RJ-45 and Fiber internal jumper settings Www . GarrettCom . com Powering the Magnum Quad-Series Switch 10Mbps Fiber ports internal jumper settingsQuad Port Module QPM Installation Preparation for Installing and Removing QPMsRemove Chassis Cover 1a Removing Chassis CoverInstalling QPM Cards in the Magnum Q-Series 1c Front View QPM Retaining Screws hold Face Plates2a Inserting QPM Cards into a Magnum QS5116 Removing QPM Cards 3b Removing a QPM CardSwitching Functionality Filtering and ForwardingAddress Learning Status LEDs Auto-negotiation, for Fast Ethernet copper portsPWR ACTWww . GarrettCom . com Auto-negotiation for 10 Mb ports, half- or full-duplex mode Flow-control, Ieee 802.3x standardFiber Port Module Introduction Magnum QUAD-SERIES QUAD-PORT Modules QPM Product DescriptionQPM-MST, 100Mb multi-mode FX-ST Quad-port Module, twist lock QPM-SSC 100Mbps single-mode FX-SC-type, snap-in connector 100BASE-FX Single-ModeSmall-form-factor QPM-RJ45 Twisted Pair, 10/100Mb TP Quad-Port 10/100BASE-T and 100BASE-FX Combo Quad-Port Connectors QPM-FP 10 Blank Face PlateBefore Calling for Assistance When Calling for Assistance Return Material Authorization RMA ProcedureNo Problem Found B1.0 Specifications for Magnum QUAD-SERIES Switches Power Supply Internal -48 VDC OptionShipping and Packaging Information Power Supply Internal 24 VDC Option Power Supply Internal 125 or 100VDC OptionB3.0 Applications for DC Powered Ethernet Switches B4.0 Installation B4.1 UL RequirementsB5.0 Operation B6.0 Ordering Information Magnum QS5116-125VDCC4.0 Features and Benefits of the DUAL-SOURCE Design C5.0 InstallationC3.0 DUAL-SOURCE OPTION, Theory of Operation To the external Terminal BlockC5.1 UL Requirements C6.0 Ordering InformationExample Magnum QS5116-48VDC C7.0 Operation