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GarrettCom DS 880 manual

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  • Page 1

    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.GarrettCom .com email support@garrettc om.com Magnum DS 880 10 / 100 Dual-Speed Stackable Hubs I n s t a l a Installation and User Guide[...]

  • Page 2

    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 Rev C (05/01) Trademarks Ethernet is a trademark of Xerox Corporation NEBS is a trademark of Telcordia Technologies UL is a registered trademark of Unde[...]

  • Page 3

    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. Fremont, CA 9453-7437 Phone (510) 438-9071 Fax (510) 438-9072 Website: http ://www.GarrettCom[...]

  • Page 4

    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.offers the premium-quality Magnum  line of Ethernet LAN connectivity products with industry-sta ndard functionality and [...]

  • Page 5

    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 ...................................................................................................... 1 1.1 Technical Sp ecificati ons ................................................................[...]

  • Page 6

    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. DS880 hubs support two traffic domains, one at 100Mb/s a nd one at 10M b/s, have eight RJ-45 ports, and are stackable up to 3 un its high operating as [...]

  • Page 7

    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. Network Cable Conne c t or s - for the eight RJ-4[...]

  • Page 8

    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. Stackable up to three units high, with all ports in one stack o[...]

  • Page 9

    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. Inspect the conte[...]

  • Page 10

    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 802.3u auto-sensing) and accept either 100Mb or 10Mb Ethernet signals, adapting to [...]

  • Page 11

    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 2.2.2 : DS880B is a DS880A with a bridge [...]

  • Page 12

    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. The front side of the chassis has eight RJ-45 twisted-pair ports and one cascad [...]

  • Page 13

    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. Normally, one Magnum DS880-B hub per stack is needed to provide a switched interconnection between the [...]

  • Page 14

    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 2.4 : Internal view of DS880-B with bridge module installed Magnum DS880-B’s contain a factory -installe d bridge module to interconnect the two traffic domains, filtering[...]

  • Page 15

    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 . . . one at 10Mb and one at 100Mb . . . in one physical box supporting two traff[...]

  • Page 16

    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. All share the same hub, and talk to each othe[...]

  • Page 17

    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. The stacking cables c[...]

  • Page 18

    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.) If the equipment is mounted in an enclosed or multiple rack assembly, the environmental temperature around the equipment must be[...]

  • Page 19

    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. The brackets are attached to the m[...]

  • Page 20

    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. A collision domain is defined as a cluster[...]

  • Page 21

    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 . The safety margin [...]

  • Page 22

    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. The variable “X”, the maximum hub-to-hub cable delay, is calculated as follows: PDV = X + ((100) + (80 + 80 + 80 )+ (83 + 83) + 2 ) BT < 512 BT 512 > (X + 508) BT, X < 4 BT Twisted pai[...]

  • Page 23

    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. 3.2.3 Connections to NICs w h ich support Auto-Negotiation The Magnum DS880 Dual-Speed Hub will function properly[...]

  • Page 24

    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). The DS880-B prov[...]

  • Page 25

    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 Action 10 Mb Not in table Not in table Add source to table Forward 10 Mb Not in table In table Add source to table Filter 10 Mb In table Not in table None [...]

  • Page 26

    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 4.2: Switch Settings for 10/100Mbps and 10[...]

  • Page 27

    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. When the ‘ 100’ LED is flashing, it m eans that the corresponding port is sending out auto-negotiat[...]

  • Page 28

    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. The insta llation of the Magnum DS880 10/100 Dual Speed Stackable Hub is a s traightforward proced[...]

  • Page 29

    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. The nature and duration of the problem; b. Situations when the problem occurs; c[...]

  • Page 30

    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 under warranty at no charge, a nd will return the warranty-repaired units to the sender with shipping charges prepaid (see Warranty Information, Appe[...]

  • Page 31

    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 B1.0 SPECIFICATIONS - FOR DUAL-SPEED DS880 HUBS Power Supply (Inte rnal 48 VDC Option) DC Power Connector: 3 terminals: “ - “, “GND”, “+” Input Voltage: 36 - 70 VDC (auto-ranging)[...]

  • Page 32

    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. (see figure below). Figure B4.1: 48 VDC Terminal Bl oc k on Magnum DS880-48VDC The 48 VDC terminal[...]