Manuale d’uso / di manutenzione del prodotto DS 880 del fabbricante GarrettCom
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www Garre t t Com com .. www Garre t t Com com .. Corporate Headquarters GarrettCom, Inc. 47823 Westinghouse Dr. Fremont, CA 94539-7437 Phone (510) 438-9071 Fax (510) 438-9072 Website: http ://www.
Magnum DS880 Dual-Speed Stackab le Hubs Installation and User Guide (05/01) i www Garre t t Com com .. Magnum DS880 10/100 Dual-Speed Stackable Hubs Installation and User Guide Part #: 84-00058 Re.
Magnum DS880 Dual-Speed Stackab le Hubs Installation and User Guide (05/01) ii www Garre t t Com com .. Contacting GarrettCom, Inc Please use the mailing address, phone and fax numbers and email address listed below: GarrettCom, Inc. 47823 Westinghouse Dr.
Magnum DS880 Dual-Speed Stackab le Hubs Installation and User Guide (05/01) iii www Garre t t Com com .. The Magnum Line ETHERNET CONNECTIVITY PRODUCTS "DESIGNED AND MA NUFACTURED IN THE USA" OVERVIEW GarrettCom, Inc.
Magnum DS880 Dual-Speed Stackab le Hubs Installation and User Guide (05/01) iv www Garre t t Com com .. T ABLE OF C ONTENTS P AGE 1.0 SPECIFI CATIONS .....................................................................................................
Magnum DS880 Dual-speed Stackab le Hubs Installation and User Guide(05/01) 1 www Garre t t Com com .. 1.0 SPECIFICATIONS 1.1 Technical Specifications 100 or 10 Mb/s per port, auto-sensing for speed.
Magnum DS880 Dual-Speed Stackab le Hubs Installation and User Guide (05/01) 2 www Garre t t Com com .. (1.1 Technical Specifications , continued) 48VDC Power Supply (Optional ) Power Input Voltage : 36 to 72 VDC (auto ranging) Terminal Block in rear: “-, GND, +” Power Consumption: 20 watts m ax.
Magnum DS880 Dual-Speed Stackab le Hubs Installation and User Guide (05/01) 3 www Garre t t Com com .. 1.2 Ordering Information Magnum DS880 Dual-Speed Stackable Hubs Magnum DS880-A: Dual-Speed 10/100 Stackable Hub with eight RJ-45 ports, each auto-sensing for 100M b or 10Mb operation.
Magnum DS880 Dual-Speed Stackab le Hubs Installation and User Guide (05/01) 4 www Garre t t Com com .. 2.0 INTRODUCTION 2.1 Inspecting the Package and Product Examine the shipping container for obvious damage prior to installing this product; notify the carrier of any damage which y ou believe occurred during shipment or delivery.
Magnum DS880 Dual-Speed Stackab le Hubs Installation and User Guide (05/01) 5 www Garre t t Com com .. 2.2 Product Description - General Magnum DS880 Dual-Speed hubs have eight RJ-45 ports, each 10/100Mb auto- sensing. Each port can independently identif y (via IEEE 802.
Magnum DS880 Dual-Speed Stackab le Hubs Installation and User Guide (05/01) 6 www Garre t t Com com .. 2.2 Product Descripti o n - Ge ne ral (continued) 1 2 3 4 5 6 7 8 COL ACT PWR LK RX BR UPLINK 1 2 3 4 5 6 7 8 DS880A DS880B Bridge Modu le 1 2 3 4 5 6 7 8 COL ACT PWR LK RX BR UPLINK 1 2 3 4 5 6 7 8 Figure 2.
Magnum DS880 Dual-Speed Stackab le Hubs Installation and User Guide (05/01) 7 www Garre t t Com com .. 2.2.1 Magnum DS880 Chassis The Magnum DS880 chassis houses one main PC board, a bridge module daughter- board in the Model DS880-B, and an internal power supply unit.
Magnum DS880 Dual-Speed Stackab le Hubs Installation and User Guide (05/01) 8 www rre t t C om com .. 2.3 Stacking Magnum DS880s Up to four Magnum DS880s can be stack ed to operate as one 10/100 dual-speed repeater with up to 32 dual-speed ports.
Magnum DS880 Dual-Speed Stackab le Hubs Installation and User Guide (05/01) 9 www Garre t t Com com .. 2.4 Bridge Module between the 10Mb and 100Mb Domains Bridge Module Figure 2.
Magnum DS880 Dual-Speed Stackab le Hubs Installation and User Guide (05/01) 10 www Garre t t Com com .. 2.6 Features and Benefits Supports 10 or 100Mb network connect ions on each of eight RJ-45 ports Magnum DS880 Dual-Speed 10 / 100 hubs combin e two logical hubs .
Magnum DS880 Dual-Speed Stackab le Hubs Installation and User Guide (05/01) 11 www Garre t t Com com .. 2.7 Applications Example 1 : A Magnum DS880-B serves a small office w ith mixed speed requirements. Some users operate at 100Mb, and some users and utility devices (such as print servers) run at 10Mb.
Magnum DS880 Dual-Speed Stackab le Hubs Installation and User Guide (05/01) 12 www Garre t t Com com .. Example 3 : For additional expansion, DS880s can be expanded by stacking DS880-A “add-on” units. The additional stacked ports are all auto-s ensing dual-speed, and can be used at either 10Mb or 100Mb on a per-port basis.
Magnum DS880 Dual-Speed Stackab le Hubs Installation and User Guide (05/01) 13 www Garre t t Com com .. 3.0 Magnum DS880 Installation Before installing the equipment, it is necessary to take the following precautions: 1.
Magnum DS880 Dual-Speed Stackab le Hubs Installation and User Guide (05/01) 14 www Garre t t Com com .. 3.1.2 Wall (or Vertical Surface) Mounting Each Magnum DS880 Dual-Speed Hub is sh ipped with two metal mounting brackets (and screws) to allow the unit to be mounted in nearly any desired orientation or position.
Magnum DS880 Dual-Speed Stackab le Hubs Installation and User Guide (05/01) 15 www Garre t t Com com .. 3.2.2 100Mbps Collision Domain Diameter, Cable Distances and PDV Calculations The 100Mbps Collision Domain Diameter is the length of the longest path between any two devices in a single collision domain.
Magnum DS880 Dual-Speed Stackab le Hubs Installation and User Guide (05/01) 16 www Garre t t Com com .. PDV = (sum of cabling delays) + (sum of repeater delays) + (DTE pair delay) + (safety margin) PDV is the Path Delay Value of the worst case path. For the network to adhere to IEEE standard, this value must be less than 512 BT .
Magnum DS880 Dual-Speed Stackab le Hubs Installation and User Guide (05/01) 17 ww Garre t t C co .. lengths are up to 100 meters for Cat 5 twisted pair.
Magnum DS880 Dual-Speed Stackab le Hubs Installation and User Guide (05/01) 18 www Garre t t Com com .. Instructions for connecting the Magnum DS880 Dual-Speed Hubs to the various Fast Ethernet media are given in the following sections.
Magnum DS880 Dual-Speed Stackab le Hubs Installation and User Guide (05/01) 19 www Garre t t Com com .. 4.0 OPERATION This chapter describes the function and operation of the Magnum DS880 hubs. 4.1 Dual-Speed Functionality The Magnum DS880-A handles the two different traffic domains separately (unless it is stacked with a DS880-B).
Magnum DS880 Dual-Speed Stackab le Hubs Installation and User Guide (05/01) 20 www Garre t t Com com .. Packet Source Destination Address Table Filter/Forward Source Address Add ress Maintenance Actio.
Magnum DS880 Dual-Speed Stackab le Hubs Installation and User Guide (05/01) 21 www Garre t t Com com .. 4.2 Port Speed Settings for 10,100Mbps Or 10/100Mbps Mode only 1 2 3 4 5 6 7 8 10/100 100 ON OFF ON OFF 1 2 3 4 5 6 7 8 10/100 100 SW2 SW 3 Port 1 Port 2 Port 3 Por t 4 Port 5 Port 6 Port 7 Port 8 Figure 4.
Magnum DS880 Dual-Speed Stackab le Hubs Installation and User Guide (05/01) 22 www Garre t t Com com .. 4.3 Auto-ne gotiation and speed-sensing All eight RJ-45 ports independently support auto-negotiation for shared 10BASE-T and 100BASE-TX modes.
Magnum DS880 Dual-Speed Stackab le Hubs Installation and User Guide (05/01) 23 www Garre t t Com com .. 5.0 TROUBLESHOOTING All Magnum Ethernet products are designed to provide reliability and consistently high performance in all network environments.
Magnum DS880 Dual-Speed Stackab le Hubs Installation and User Guide (05/01) 24 www Garre t t Com com .. 5.2 When Calling for Assistance Please be prepared to provide the following information. 1. A complete description of the problem, including the following points: a.
Magnum DS880 Dual-Speed Stackab le Hubs Installation and User Guide (05/01) 25 www Garre t t Com com .. GarrettCom will carefully test and evaluate all returned products, will repair products that are.
Magnum DS880 Dual-Speed Stackab le Hubs Installation and User Guide (05/01) 26 www Garre t t Com com .. APPENDIX B : Optional 48V DC P o w er Supply, Addendum B1.
Magnum DS880 Dual-Speed Stackab le Hubs Installation and User Guide (05/01) 27 www Garre t t Com com .. B4.0 INSTALLATION This section describes the installation of the 48 VDC power source leads to the 48 VDC power terminal block on the Magnum DS880s.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il GarrettCom DS 880 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del GarrettCom DS 880 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso GarrettCom DS 880 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul GarrettCom DS 880 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il GarrettCom DS 880, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del GarrettCom DS 880.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il GarrettCom DS 880. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo GarrettCom DS 880 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
