Wichtige Sicherheitshinweise Bitte lesen Sie sich diese Hinweise sorgfältig durch. Heben Sie diese Anleitung für den spätern Gebrauch auf. Vor jedem Reinigen ist das Gerät vom Stromnetz zu trennen. Vervenden Sie keine Flüssig- oder Aerosolreiniger. Am besten dient ein angefeuchtetes Tuch zur Reinigung. Um eine Beschädigung des Gerätes zu vermeiden sollten Sie nur Zubehörteile verwenden, die vom Hersteller zugelassen sind.
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Trademarks Copyright 1997 D-Link Corporation. Contents subject to change without prior notice. D-Link is a registered trademark of D-Link Corporation/D-Link Systems, Inc. All other trademarks belong to their respective proprietors. Copyright Statement No part of this publication may be reproduced in any form or by any means or used to make any derivative such as translation, transformation, or adap- tation without permission from D-Link Corporation/D-Link Systems Inc., as...
Conventions As used in this manual, the expression "DFE-916 series" includes both the DFE-916 and the DFE-916x. Unless a specific model number is given, the term "hub" (or "hubs") refers to any unit (or units) in this series. Most of the information in this manual applies to all DFE-916 and DFE- 916x units.
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Dual-Speed Stackable Hubs User’s Guide Chapter 4, Making Connections. Provides information on connect- ing to the hub’s twisted-pair and console ports, stacking hubs, and linking with other hubs. Appendix A, Cables and Connectors. Provides specifications on the cables and connectors used with the hubs. Appendix B, Specifications.
Product Description D-Link DFE-916 series dual-speed stackable Ethernet/Fast Ethernet hubs are designed to allow easy migration and integration between 10Mbps Ethernet and 100Mbps Fast Ethernet, while providing manageability and flexibility in cable connections.
In the basic configuration, 10Mbps and 100Mbps segments are separate and do not intercommunicate. An optional DFE-260S switching module (in- cluded with the DFE-916x) can be installed in any hub in the stack, making it possible to transparently bridge between 10Mbps and 100Mbps segments.
A stack can contain various DFE-916 series models and DFE-2624 and DFE-2616 series models. For SNMP management, DFE-916 and DFE-916x units can be managed through a DFE-2616i/DFE- 2616ix or DFE-2624i/DFE-2624ix master hub. LED indicators for power, collisions, link, network activity, parti- tioning status, disable, operating speed (10 or 100Mbps) and network utilization.
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100Mbps to all other ports operating at the same speed. 100Mbps 100Mbps Ethernet Ethernet Station Station If there is a DFE-260S module, or a DFE-916x hub present in the stack, the switching module will serve as a bridge between the two independent re- peaters. 10Mbps 10Mbps 100Mbps Ethernet...
DFE-260s Switch Module 100Mbps 100Mbps Ethernet Ethernet Station Station 100BASE-TX Technology Overview 100Mbps Fast Ethernet Introduction Computers today have become increasingly powerful, with the capability to accommodate very sophisticated uses such as multimedia applications, video-conferencing, and CAD/CAM. To utilize these technologically ad- vanced applications more efficiently, there is also a growing demand for faster networks that can handle heavy network traffic.
CSMA/CD Ethernet protocol. Since Fast Ethernet is compatible with all 10Mbps Ethernet environments, it provides a straightforward upgrade with- out wasting the company’s existing investment in hardware, software, and trained personnel. Cables and Connectors Category 5 unshielded twisted-pair (UTP) cables and shielded twisted-pair (STP) cables are both supported.
Dual-Speed Stackable Hubs User’s Guide Network Diameter Network diameter, which is the distance between two end-stations in the same collision domain, is the primary difference between traditional Ethernet and Fast Ethernet. Due to the increased speed in Fast Ethernet and adherence to the EIA/TIA 568 wiring rules, the network diameter of a Fast Ethernet collision domain is limited to 205 meters;...
Four rubber feet to be used for cushioning This User’s Guide Inspect the hub and all accompanying items. If any item is damaged or missing, report the problem immediately to your D-Link dealer. Unpacking and Setup Dual-Speed Stackable Hubs User’s Guide...
PCs, workstations, or servers through these ports. If you need to connect another device with MDI-X ports, such as another hub or an Ethernet switch, you should use a crossover cable, or connect using the Uplink port (described below).
Used to install module options for various kinds of additional connec- tions, as well as the DFE-260S 10Mbps/100Mbps bridge module. (In the DFE-916x, the module slot is already occupied by the switching module which is standard on these models.) Daisy-Chain IN Port When cascading a set of D-Link’s stackable dual-speed hubs, this port...
hubs can be created in this way. The first and last hubs in the stack use only one of the daisy-chain ports, while the others use both. Daisy-Chain OUT Port Works in conjunction with the Daisy-Chain IN Port (see above). Con- nect this port to the Daisy-Chain IN Port of the next hub in the stack (usually placed immediately below it), using the enclosed daisy-chain cable.
The hub can be mounted in an EIA standard-size, 19-inch rack, which can be placed in a wiring closet with other equipment. For information about D-Link’s DFE-700B Rack Mounting Brackets, consult your D-Link dealer. If you already possess the brackets, attach the mounting brackets at the hub’s front panel (one on each side), and secure them with the provided...
Connecting the Power Supply Power is supplied to the stackable Fast Ethernet hub through an AC power cord. The AC power input voltage ranges from 100 to 240 VAC. A power cord is included with the device. Unpacking and Setup...
Dual-Speed Stackable Hubs User’s Guide NDERSTANDING NDICATORS Before connecting network devices to the hub, take a few minutes to look over this section and familiarize yourself with the front panel LED indica- tors of your dual-speed hub, depicted below. Understanding Indicators...
Hub State Indicators Power Indicator This indicator lights green when the hub is receiving power; otherwise, it is off. Collision Indicators (COL10M and COL100M) These indicators indicate data collisions on the respective 10Mbps Ethernet or 100Mbps Fast Ethernet segments of the hub. (If several hubs are stacked or linked together, all of them should detect and indi- cate the same collision, since collisions span the entire network segment.) Whenever a collision is detected, the respective COL indi-...
For the DFE-260FX and DFE-260TX modules, the slot link indicator should light whenever the module is in- stalled and there is a valid link. Note: DFE-916x/DFE-916 can be stacked with DFE-2600 series products and can be managed through a DFE-2616i/DFE-2616ix 2624i/DFE-2624ix master hub.
Auto-partition (blinking amber) The indicator of a port blinks amber when the port is automatically par- titioned due to an abnormal network condition. The hub will temporarily partition a port when too many line errors or too many collisions are detected on the port. While the segment is automatically partitioned, the port will be isolated from the rest of the network segment.
Dual-Speed Stackable Hubs User’s Guide AKING ONNECTIONS This chapter discusses how to make connections to the hub’s twisted-pair ports, cascading hubs to create a stack, and linking with other hubs (or hub stacks). Hub Cascading/Building a Stack You can stack up to five hubs using the daisy-chain ports to form one logi- cal hub.
Hubs should not be added to the stack or removed from the stack while the power is on to any hub in the stack. Always turn off power to the entire stack before adding or removing hubs. Connectivity Rules Ethernet (10Mbps) networks have the following connectivity rules: The maximum length of a twisted-pair cable segment is 100 meters.
The maximum length of a twisted-pair segment (that is, the distance between a port in the hub to a single-address network device such as a PC, server, or Ethernet switch) is 100 meters. Cabling and other wiring should be certified as Category 5 UTP or shielded twisted- pair (STP).
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When connecting a PC or a server, the system being connected should have an Ethernet or Fast Ethernet network interface card with a twisted-pair port. The following figure shows typical connections between the hub and end- stations: Making Connections...
The following table describes different methods of linking hubs (or hub stacks): HUB PORT DEVICE USED Normal Switch or Server (or PC) Uplink Switch or Server (or PC) Making Connections Dual-Speed Stackable Hubs User’s Guide PORT...
A crossover cable is a straight-through twisted-pair cable in which the wires have been crossed. The figure below shows the pin assignments for an Ethernet or Fast Ethernet crossover cable: The first twisted-pair port (Port 1) is shared NOTE: with the Uplink port. If you connect a hub to the Uplink port, then do not use Port 1.
10Mbps and 100Mbps segments in the hub or hub stack. Each hub stack should have one DFE-260S module (such as the one included in the DFE-916x) if you wish to allow 10Mbps and 100Mbps stations to inter- communicate. Making Connections...
When the LED is off, the fiber optic port is in half duplex mode. The duplex mode DIP switch allows you to set the fiber optic link to full duplex mode operation. Only the right-hand switch (number 2) is active.
DFE-916 series hub stacks, placing them in separate collision domains. A link of this sort eliminates the need for a separate switch to separate stacks into separate domains. Separating the stacks into separate collision domains overcomes the Fast Ethernet two- repeater limitation, and effectively doubles overall bandwidth.
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When the LED is off, the port is in half duplex mode. The duplex mode DIP switch allows you to set the port to full duplex mode operation. Only the right-hand switch (number 2) is active. Use the DIP switch to set the duplex mode.
100BASE-TX Ethernet Cable and Connectors Cable characteristics: Category 5 unshielded twisted-pair or EIA/TIA-568 compliant, 100-ohm shielded twisted-pair data cable with 0.4 to 0.6 mm (22 to 26 AWG) wires in two or four twisted pairs (only two pairs/four wires are used for 100BASE-TX). Maximum segment length: 100 meters Maximum network diameter: 205 meters Connectors: RJ-45...
Crossover Cables When cascading or connecting the hub to another hub, or to a switch or bridge, through a UTP port, a modified crossover cable is necessary. With a crossover cable, two pairs of wires are switched at one connector end.
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At the other end of the cable, connect wires 1 and 2 to contacts 3 and 6, respectively. Likewise, connect wires 3 and 6 to contacts 1 and 2. Refer to the following diagram: Cables and Connectors Dual-Speed Stackable Hubs User’s Guide...
General Standards: IEEE 802.3 10BASE-T Ethernet repeater, IEEE 802.3u 100BASE-TX Fast Ethernet repeater (Class II); ANSI X3T9.5 Twisted-Pair Transceiver Topology: Star Protocol: CSMA/CD Network Data Transfer Rate: Number of Ports: 16, all dual-speed (10Mbps/100Mbps) Network Media: Ethernet: Category 3 or better UTP cable, 100m maxi- mum;...
Port Status (per port): Link/Activity/Auto Partition/Manual Disable, Environmental and Physical Power Supply: 100 to 240 VAC, 50 or 60 Hz internal universal power supply Power Consumption: DFE-916x = Dimensions: 324mm (W) (12.75 Weight: 2.5 kg (5.5 lb.) (1.25U height) Operating Temperature: -10 to 55 C...
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Dual-Speed Stackable Hubs User’s Guide Storage Temperature: -25 to 55 C Humidity: 5% to 95% non-condensing DC Fan: 40mm 40mm 10mm Emissions: FCC Class A, CE, VCCI Class A, C-Tick Safety: UL, CSA, CE Mark, TÜV/GS Specifications...
3. What network protocol(s) does your organization use ? †XNS/IPX †TCP/IP †DECnet †Other_____________________________ 4. What network operating system(s) does your organization use ? †D-Link LANsmart †Novell NetWare †NetWare Lite †SCO Unix/Xenix †PC NFS †3Com 3+Open †Banyan Vines †DECnet Pathwork †Windows NT †Windows NTAS †Windows '95 †Other__________________________________________ 5.