Related Manuals for NETGEAR EN516
Summary of Contents for NETGEAR EN516
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Page 1: Ethernet Hub
Installation Guide for the Model EN516 Ethernet Hub N E T G E A R NETGEAR Inc. 4500 Great America Parkway Santa Clara, CA 95054 Phone: 1-888-NETGEAR E-mail: support@NETGEAR.com www.NETGEAR.com M-EN516NA-1 September 2000... - Page 2 In the interest of improving internal design, operational function, and/or reliability, NETGEAR reserves the right to make changes to the products described in this document without notice. NETGEAR does not assume any liability that may occur due to the use or application of the product(s) or circuit layout(s) described herein.
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Page 3: Customer Support
Certificate of the Manufacturer/Importer It is hereby certified that the NETGEAR Model EN516 Ethernet Hub has been suppressed in accordance with the conditions set out in the BMPT-AmtsblVfg 243/1991 and Vfg 46/1992. The operation of some equipment (for example, test transmitters) in accordance with the regulations may, however, be subject to certain restrictions. Please refer to the notes in the operating instructions. -
Page 5: Table Of Contents
Installing the Hub in a Rack ...3-3 Connecting the Hub ...3-4 Connecting to the RJ-45 Ports ...3-4 Connecting to the BNC Port ...3-7 Connecting to the AUI Port ...3-9 Connecting to Other NETGEAR Products ...3-10 Completing and Verifying the Installation ...3-11 Contents Contents... - Page 6 Partition LED for the BNC Port ...4-2 Partition LED for the AUI Port ...4-3 Installation ...4-3 Cabling ...4-3 Network Interface Cards ...4-4 Configuration ...4-4 Hub Integrity ...4-4 Appendix A Technical Specifications General Specifications ... A-1 Appendix B Cabling Specifications Cable Specifications ... B-1 Twisted Pair Cables ...
- Page 7 Installing mounting brackets to the hub and to a rack ...3-4 Figure 3-2. Connecting a workstation to an RJ-45 port on the Model EN516 hub ...3-5 Figure 3-3. Cascading multiple hubs in a hierarchical star through the RJ-45 ports ..3-6 Figure 3-4.
- Page 8 viii Figures...
- Page 9 Table 2-1. LED descriptions ...2-2 Table B-1. Electrical requirements of Category 3, 4, and 5 cables ... B-1 Table B-2. Specifications of 10BASE2 (ThinNet) RG 58 A/U or RG 58 C/U coaxial cable ... B-3 Table B-3. Specifications of AUI cable ... B-3 Table C-1.
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Page 11: Introduction
Working knowledge of Ethernet • Familiarity with 10BASE-T specifications Features Featuring a compact design, the Model EN516 hub offers all the features of a standard equipment rack-mount hub at a significantly lower cost. These features include: • Sixteen IEEE 802.3-compliant 10BASE-T ports, providing effective information exchange,... - Page 12 • Plug-and-play with no software to configure • Hub functions such as packet retiming, collision detection, preamble regeneration, and fragment extension • Automatic partitioning and reconnection of a port that has excessive collisions or is jabbering •...
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Page 13: Physical Description
This chapter describes the hardware features of the Model EN516 hub. The discussion of the physical components of the hub is divided into two sections, “Front Panel” and “Rear Panel.” Use the key at the bottom of each illustration to identify the associated component. -
Page 14: Led Indicators
LED Indicators There are six LEDs on the front panel of the hub and two on each port connector that allow you to identify: • Status of the hub AC power supply • Operational status of the hub • Collision occurrence on an Ethernet segment indicating activity level •... -
Page 15: Rj-45 Ports
Installation Guide for the Model EN516 Ethernet Hub RJ-45 Ports The front panel of the Model EN516 hub provides 16 RJ-45 10BASE-T ports. Two LEDs, the Link/Rx LED and the Partition LED, are positioned at the top corners of each RJ-45 connector. -
Page 16: Rear Panel
Rear Panel The rear panel of the Model EN516 hub (refer to Figure 2-2) provides two ports, the AUI port and the BNC port. You can use the AUI port with the appropriate transceiver to connect the hub to a backbone network using thin coaxial cable, thick coaxial cable, fiber optic cable, or 10BASE-T... -
Page 17: Installation
Completing and verifying the installation Preparing the Site Before you begin installing the Model EN516 hub, prepare the installation site. Make sure the operating environment meets the physical requirements of the hub. The ambient temperature must be between 0 C and 40 C. The maximum relative humidity must not exceed 90%. -
Page 18: Required Tools
Use them to repack the hub if there is a need to return it for repair. Be sure to complete the Owner Registration Card and return it to NETGEAR to qualify for product updates and product warranty registration. -
Page 19: Installing The Hub On A Flat Surface
Peel off the protective backing from the rubber pads and apply one at each marked location on the bottom of the hub. Set the hub on a tabletop or shelf so that it has at least 2 inches (5 cm) of space on all sides. -
Page 20: Connecting The Hub
Connecting to the RJ-45 Ports You can connect PCs, Apple Macintosh computers, UNIX workstations, and any device equipped with a 10BASE-T Ethernet interface to the RJ-45 ports on the Model EN516 hub using twisted pair Ethernet cables. The twisted pair cable extended from an RJ-45 port (or UTP port) is called a twisted pair segment and can be up to 100 m in length. -
Page 21: Figure 3-2. Connecting A Workstation To An Rj-45 Port On The Model En516 Hub
Refer to the following illustrations for connecting to the RJ-45 ports and proceed to “Completing and Verifying the Installation” on page 3-11. Figure 3-2 illustrates a workstation connected to an RJ-45 port on the Model EN516 hub. Key: 1 = Network adapter card with RJ-45 connector 2 = UTP cable to Model EN516 hub Figure 3-2. -
Page 22: Figure 3-3. Cascading Multiple Hubs In A Hierarchical Star Through The Rj-45 Ports
Key: 1 = Model EN516 hub with the Normal/Uplink push button set to Normal position 2 through 7 = Model EN516 hub with the Normal/Uplink push button set to Uplink position Figure 3-3. Cascading multiple hubs in a hierarchical star through the RJ-45 ports Note: Ethernet specifications limit the number of hubs in any communication path to five... -
Page 23: Connecting To The Bnc Port
Connecting to the BNC Port The BNC port at the rear panel of the Model EN516 hub is used for connecting to a thin coaxial segment. You can connect servers, workstations, or other devices to the BNC port or several Model EN516 hubs as shown in Figure 3-5. -
Page 24: Figure 3-5. Cascading Hubs Through The Bnc Port
Connect the coaxial cable from another device to the remaining end of the self-locking BNC T-connector. If there are no more devices to be connected, terminate the connection with the 50 terminator that is provided with the product. Proceed to “Completing and Verifying the Installation” on page 3-11. Figure 3-5 illustrates three hubs cascaded through the BNC connector. -
Page 25: Connecting To The Aui Port
Connecting to the AUI Port The AUI port at the rear panel of the Model EN516 hub is normally used for connecting a thick coaxial segment. When using the AUI port, refer to Figure 3-6 and follow these steps: Connect the AUI port on the hub to an external coaxial transceiver through an AUI transceiver cable. -
Page 26: Connecting To Other Netgear Products
164 feet (50 m). Connecting to Other NETGEAR Products You can extend your network by connecting to an Ethernet switch, such as the NETGEAR Model SW507 Ethernet Switch. Figure 3-7 illustrates power users on a 100 Mbps network using the NETGEAR Model FE516 Fast Ethernet Hub and connecting to the 10 Mbps network through a Model SW507 switch. -
Page 27: Completing And Verifying The Installation
To complete the installation, connect the power cord first to the power entry receptacle on the hub rear panel and then to the power outlet on the wall. When power has been applied to the hub, the following conditions should exist: •... -
Page 29: Troubleshooting
This chapter provides information about troubleshooting the Model EN516 hub. Front Panel LEDs The Model EN516 hub provides 38 front panel LEDs for monitoring individual ports and hub status. The power LED indicates when power is supplied to the hub. -
Page 30: Link/Rx Led For The Rj-45 Ports
The green Link/Rx LED on each RJ-45 port turns on when a link is established successfully between the hub and a PC or other device. It is off when there is no data link and/or the cable is not connected. If the Link/Rx LED is not on after cabling has been installed, check for a bad cable, cable pairs that are not correctly wired, or loose connectors. -
Page 31: Partition Led For The Aui Port
• Disconnected point somewhere along the coaxial cable length • Segment that is not terminated with a 50 Check all connectors along the cable length. If the segment is not terminated, terminate both ends with 50 terminators. Partition LED for the AUI Port When the AUI port is connected with a 10BASE-T twisted pair or 10BASE-FL fiber optic transceiver, the Partition LED turns on after 32 continuous collisions are detected on the connected segment. -
Page 32: Network Interface Cards
Hub Integrity If required, verify the integrity of the hub by resetting it. Turn off the power to the switch and then turn the power to the switch back on. If the problem continues and you have completed all the preceding diagnoses, contact Customer Support. -
Page 33: Technical Specifications
This appendix provides technical specifications for the NETGEAR Model EN516 Ethernet Hub. General Specifications Network Protocol and Standards Compatibility IEEE 802.3 10BASE-T, 10BASE-2, 10BASE5 Ethernet IEEE 802.3 CSMA/CD Data Rate 10 Mbps, Manchester encoded Interface 16 10BASE-T ports (RJ-45) 1 BNC 10BASE-2 port... - Page 34 Environmental Specifications Operating temperature: 0 C to 40 C (32 F to 104 F) Operating humidity: 90% maximum relative humidity, noncondensing Electromagnetic Emissions CE mark, commercial FCC Part 15 Class A EN 55 022 (CISPR 22), Class B VCCI Class 1 ITE Electromagnetic Susceptibility CE mark, commercial Electrostatic discharge (ESD): IEC 801-2, Level 2/3/4...
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Page 35: Cable Specifications
Hub. Cable Specifications For 10 Mbps connections, Category 3, 4, or 5 cables can be used. NETGEAR highly recommends using Category 5 cable to avoid unnecessary expense or confusion if you upgrade to Fast Ethernet. Table B-1 lists the electrical requirements of Category 3, 4, and 5 cables. -
Page 36: Twisted Pair Cables
Twisted Pair Cables For two devices to communicate, the transmitter of each device must be connected to the receiver of the other device. The crossover function is usually implemented internally as part of the circuitry in the device. Most repeaters and switch ports are media-dependent interfaces with crossover ports, referred to as MDI-X or Normal ports. -
Page 37: Coaxial Cable
600 feet (185 m) in length. AUI Cable The AUI cable connects the AUI port on the Model EN516 hub to a transceiver. The Ethernet specifications limit the cable length to 164 ft (50 m). Table B-3 lists the specifications of AUI cable. -
Page 39: Connector Pin Assignments
Appendix C Connector Pin Assignments This appendix provides information on the RJ-45, AUI, and BNC connectors that are used for the NETGEAR Model EN516 Ethernet Hub. RJ-45 Connector The RJ-45 connector is used to connect workstations, hubs, and switches through unshielded twisted pair cable. -
Page 40: Aui Connector
Not used AUI Connector The AUI connector for the Model EN516 hub connects the hub through an external transceiver to other devices. An inter-repeater fiber link for 10BASE-F or FOIRL are examples of such applications. Figure C-2 illustrates the AUI connector pin assignments. -
Page 41: Bnc Connector
DI-B + 12V DC (500 mA maximum) BNC Connector The BNC connector for the Model EN516 hub supports 10 Mbps data transmission and connects the hub to other devices. Figure C-3 illustrates the parts of the BNC connector. 7201 Key:... -
Page 42: Bnc T-Connector And 50 Terminator
Installation Guide for the Model EN516 Ethernet Hub BNC T-Connector and 50 Terminator The BNC port on the Model EN516 hub, with the BNC T-connector and the 50 terminator, is used for connecting to a thin coaxial segment. Figure C-4 illustrates the BNC T-connector and terminator. -
Page 43: Index
Numerics 10BASE2 coaxial cable specifications (table) attachment unit interface. See AUI AUI cable specifications (table) B-3 AUI connector pin assignments (table) C-2 AUI Partition LED 2-2, 4-3 AUI port cascading hubs through 3-9 connecting to 3-9 description 2-4 AUI Rx LED 2-2, 4-2 50 ohm terminator C-4 connector C-3 T-connector C-4... - Page 44 3-6 installation cascading ports 3-4 to 3-9 completing 3-11 connecting ports 3-4 to 3-9 connecting to NETGEAR products 3-10 daisy-chain style 3-7 in a rack 3-3 network interface cards 4-4 on a flat surface 3-3 package contents 3-1...
- Page 45 package contents 3-1 ports See also AUI See also BNC See also RJ-45 AUI 2-4 BNC 2-4 cascading 3-4 to 3-9 connecting 3-4 to 3-9 RJ-45 2-3 using transceivers to connect AUI 3-9 Power LED 2-2, 3-11, 4-1 rear panel 2-4 RG 58 A/U coaxial cable specifications (table) RG 58 C/U coaxial cable B-3 RJ-45 connector...