GarrettCom 4K-Series manual Magnum 4K8 Switches Installation and User Guide 10/04

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Magnum 4K8 Switches Installation and User Guide (10/04)

backbone, or to some other remote 100Mb device. In this case, it is desirable to operate the fiber link at 100Mb speed, and at either half- or full duplex mode depending on the capabilities of the remote device. Standard commercially-available Fast Ethernet media converters mostly do not support auto-negotiation properly, and require that the switched port to which they are connected be at 100Mb fixed speed. Attachment to 10/100 auto- negotiation ports typically will not work properly.

When 4K8-Switch’s RJ-45 copper ports are set for auto-negotiation and connected to an another auto-negotiating device, there are 4 different speed and F/H modes selection depending on what the other device supports. These are: (1) 100Mb full-duplex, (2) 100Mb half-duplex, (3) 10 Mb full-duplex and (4) 10 Mb half-duplex.

The auto-negotiation logic will attempt to operate in descending order and will normally arrive at the highest order mode that both devices can support at that time. (Since auto- negotiation is potentially an externally-controlled process, the original “highest order mode” result can change at any time depending on network changes that may occur). If the device at the other end is not an auto-negotiating device, the 4K8-Switch’s RJ-45 ports will try to detect its idle signal to determine 10 or 100 speed, and will default to half-duplex at that speed per the IEEE standard.

General information -

Auto-negotiation per-port for 802.3u-compliant switches occurs when:

the devices at both ends of the cable are capable of operation at either 10 Mb or 100Mb speed and/or in full- or half-duplex mode, and can send/receive auto-negotiation pulses, and . . .

--when the second of the two connected devices is powered up*, i.e., when LINK is established for a port, or

--when LINK is re-established on a port after being lost temporarily.

NOTE some NIC cards only auto-negotiate when the computer system that they are in is powered up. These are exceptions to the “negotiate at LINK – enabled” rule above, but may be occasionally encountered.

When operating in 100Mb half-duplex mode, cable distances and hop-counts

may be limited within that collision domain. The Path Delay Value (PDV) bit-times must account for all devices and cable lengths within that domain. For Magnum 4K-Series

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Contents 4K8 Switches Trademarks Magnum 4K-Series 4K8 Switches Installation and User GuideEmail support@garrettcom.com Contacting GarrettCom, IncIntroduction Table of ContentsTroubleshooting Personal Hubs, 10Mb series Personal Switches , 10/100MbMedia Converters, 10Mb and 100Mb series Technical Specifications LEDs Per Port Power Supply InternalDC Power Supply Options WarrantyOrdering Information Introduction Inspecting the Package and Product Magnum 4K8 Switch chassis Product Description Magnum 4K8 SwitchesFront View Rear View3 Fiber-Port Modules, FPM-ST, FPM-SC, FPM-MTRJ Fiber-port modules, 100Mb fiberFiber-port modules, 10 Mb fiber 5 10/100 Dual-speed Switched ports, RJ-45 copperFrame Buffering and Latency Magnum 4K8 Switches Installation and User Guide 10/04 „ Eight RJ-45 copper ports, 10/100 auto-negotiation Features and Benefits„ Full-duplex or Half-duplex operation, auto-sensing Applications Magnum 4K-Series Ethernet 10/100 Switch Router 4b Magnum 4K8 provides a 100Mb backbone SwitchLocating Magnum 4K8 Switches InstallationCopper Connecting Ethernet MediaConnecting Fiber Optic ST-type, twist-lock Ieee Standard Media Type Max. Distance Port Module FiberConnecting Single-Mode Fiber Optic Connecting Fiber Optic SC-type, Snap-InMedia Ieee Standard Optional Brackets and the Etsi brackets Are similar to the 19 brackets But use metric dimensionsRack-mounting Etsi European Telephone Standard bracketsPreparation for Installing and Removing FPMs Fiber Port Module FPM Installation1a Removing Chassis Cover Remove Chassis CoverBefore insertion Installing FPM Cards in the Magnum 4K8 Switches2b Inserting PM Cards into a Magnum 4K8 Removing FPM Cards from Magnum 4K8 Switches3b Removing a FPM Card Powering the Magnum 4K8 SwitchFiltering and Forwarding Switching FunctionalityAddress Learning Auto-negotiation, for Fast Ethernet copper ports Manual Switches F-H, for FPM Port#9 onlyError Status LEDsMagnum 4K8 Switches Installation and User Guide 10/04 Flow-control, Ieee 802.3x standard Auto-negotiation for 10/100Mb portsFiber Port Module Inspecting the Package and Product Optional Introduction Magnum 4K8 Fiber-Port Modules FPMProduct Description FPM-MSC 100Mbps multi-mode FX-SC-type, snap-in connector FPM-MST, 100Mbps multi-mode FX-ST-type, twist-lock connectorActivity Link FPM-SSC 100Mbps single-mode FX-SC-type, snap-in connectorActivity 2 Link 100BASE-FX MT-RJFPM-Blank FPM-BlankBefore Calling for Assistance Return Material Authorization RMA Procedure When Calling for AssistanceShipping and Packaging Information No Problem FoundB3.0 Applications for DC Powered Switches Power Supply Internal 125 VDC Option Industrial ApplicationFigure B4.1 -48VDC Terminal Block on Magnum Ks-48VDC B4.0 InstallationB6.0 Ordering Information B7.0 TroubleshootingB4.1 UL Requirements B5.0 OperationC5.0 Installation C4.0 Features and Benefits of the DUAL-SOURCE DesignC3.0 DUAL-SOURCE OPTION, Theory of Operation C7.0 Operation C5.1 UL RequirementsC6.0 Ordering Information Example Magnum 4K8-48VDC