Related Manuals for D-Link DFE-904
Summary of Contents for D-Link DFE-904
- Page 1 DFE-904 Ethernet/Fast Ethernet Dual-Speed Hub User’s Guide Rev. 01 (November 1997) 6DFE904...01 Printed In Taiwan RECYCLABLE...
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Page 2: 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 adaptation without permission from D-Link Corporation or D-Link Systems Inc., as stipulated by the United States Copyright Act of 1976. FCC Warning This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. -
Page 3: Limited Warranty
Customer, and D-Link reserves the right to have Customer bear the cost of sending back such products. A service charge may or may not be levied to Customer by D-Link. To find out if a service charge is levied or not, and the charged amount, read the RMA that is returned to Customer, or ask the D- Link office when an RMA is requested. -
Page 4: Limitation Of Liability
REPAIR, OR ANY OTHER CAUSE BEYOND THE RANGE OF THE INTENDED USE, OR BY ACCIDENT, FIRE, LIGHTNING OR OTHER HAZARD. LIMITATION OF LIABILITY IN NO EVENT WILL D-LINK BE LIABLE FOR ANY DAMAGES, INCLUDING LOSS OF DATA, LOSS OF PROFITS, COST OF COVER OR OTHER INCIDENTAL, CONSEQUENTIAL OR INDIRECT... -
Page 5: Table Of Contents
Unpacking and Setup ... 3 Identifying External Components... 4 Front Panel ... 4 Side Panels ... 6 Back Panel... 7 Installing the Hub ... 9 Single-hub Network ... 9 Multi-hub Ethernet Network ...11 Two-hub Fast Ethernet Network...13 Mounting... 14 Horizontal Mounting...15 Vertical Mounting...15... -
Page 7: Introduction
100BASE-TX connections (twisted-pair Fast Ethernet operating at 100 megabits per second). The DFE-904 is two hubs in one: an Ethernet hub that works at 10 megabits per second (Mbps), and a Fast Ethernet hub that works at 100 Mbps. Important: The DFE-904 can work at 10 or 100 Mbps, but not at both speeds at the same time. - Page 8 International Institute of Electrical and Electronics Engineers (IEEE). The DFE-904 conforms fully to IEEE standards for hubs of its type. As a 10-Mbps Ethernet hub, the DFE-904 conforms to the IEEE's 10BASE-T standard. 10BASE-T stands for 10-Mbps "baseband" (that is, one-bit-at-a-time) signaling on twisted-pair cables.
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Page 9: Unpacking And Setup
100BASE-TX standard for hubs such as the DFE-904. This guide covers both methods in detail. It is assumed in this guide that you will first use the DFE-904 as a 10BASE-T Ethernet hub and later convert your network to 100BASE-TX Fast Ethernet. The requirements for each type of network are explained in detail in the relevant sections of this guide. -
Page 10: Identifying External Components
The indicator panel is described in detail in the next chapter. Front Panel On the DFE-904's front panel are the hub's Speed, Link/Rx, and Collision indicators. The Speed and Link/Rx indicators are all green light-emitting diodes (LEDs); the Collision indicator is a yellow LED. - Page 11 The Speed indicators are labeled 100 and 10 . These indicators show whether the hub is set for 100-Mbps or 10-Mbps operation. Hub speed is set using a side- panel switch described in the next section. The Speed indicators also serve as power indicators. One or the other should shine whenever the hub has power.
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Page 12: Side Panels
In this manual, the word network always refers to a collision domain. Side Panels On the DFE-904's right-hand panel are the speed switch and air inlets. The left- hand panel holds the fan outlet. prevents malfunctioning network. -
Page 13: Back Panel
Back Panel On the back of the hub, starting at the end closest to the fan, are the hub's DC power jack and five RJ-45 jacks labeled 1 , 2 , 3 , 4 , and Uplink . -
Page 14: Bottom Panel
Note that such a connection will require a cross-wired jack (the kind that is wired for an end node) on the other hub. Use only standard (straight-through) UTP or STP cables with the DFE-904. Category 3, 4, and 5 cables are all acceptable for 10 Mbps; only Category 5 and equivalent cables are acceptable for 100 Mbps. -
Page 15: Installing The Hub
Class II hub to the DFE-904, see the third section of this chapter. Caution: Single-hub Network If your network consists of the DFE-904 and two, three, or four end nodes only, make connections as described in this section. Installing the Hub... - Page 16 For the purpose of making connections to the DFE-904, a bridge, router, or switching hub (also known as a "switch") is considered an end node. Such a device acts as an end node in each of two or more collision domains, making them seem like a single network.
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Page 17: Multi-Hub Ethernet Network
Multi-hub Ethernet Network If all your end nodes will access the network at 10 Mbps and you will connect the DFE-904 to one or more other hubs, make connections as described in this section. Before making connections, check the rules and precautions and the mounting instructions given in this guide. - Page 18 Use the same kind of cable as you would use for a 10BASE-T end node. 5. Plug the other end of the cable into any jack except the Uplink jack on hub Assuming you are interconnecting only two hubs, you can use all of hub B's numbered jacks, but you must leave hub B's Uplink jack unused.
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Page 19: Two-Hub Fast Ethernet Network
DFE-904 units. Two-hub Fast Ethernet Network When set for 100-Mbps operation, the DFE-904 can have a single uplink connection to another 100BASE-TX Class II Fast Ethernet hub. In addition to the 100-meter (328-foot) absolute limit on the length of any single cable, there must not be more than 205 meters (672.4 feet) of cabling between any two end nodes. -
Page 20: Mounting
You can mount the DFE-904 on a desk, table, or other firm horizontal surface, or on a vertical surface such as a wall or the side of a desk. Important: Choose a location where the air inlets and fan outlet will never be blocked. -
Page 21: Horizontal Mounting
3. Attach the feet to the hub's bottom surface, one in each corner. Then set the hub in place and make sure it will not easily rock or slide. Also make sure nothing will press against the air inlets or the fan outlet. - Page 22 Let the screwheads protrude enough to enter the holes in the hub's base. To mount the hub, position it so the screwheads enter the holes in its base, then slide it downward and sideways so the screwheads enter the narrower slots...
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Page 23: Powering Up
The DFE-904 and connected devices can be powered up in any order. Before powering up the DFE-904, make sure that — - the hub is set to work at the speed at which all connected devices will access the network;... -
Page 24: Specifications
Standards: Topology: Protocol: Data Transfer Rate: Number of Ports: Network Media: Indicators: Power Supply: Power Consumption: Dimensions (W × D × H): Weight: Operating Temperature: Storage Temperature: Humidity: Cooling: Emissions: Safety: Specifications IEEE 802.3 10BASE-T Ethernet repeater, IEEE 802.3u 100BASE-TX Fast Ethernet repeater (Class II).