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Resumen del manual
Installing the Hub in a Rack To install the hub in a rack, follow these steps: 1. Attach the mounting brackets (supplied in the rack mounting kit) to the sides of the hub using the screws provided. Hold a mounting bracket against each side of the hub, as shown in Figure 3-1, and align the countersunk screw holes in the bracket with the bracket mounting holes in the hub. Use a #1 Phillips screwdriver to tighten the screws to secure each bracket. 2. Attach the hub (with the mounting bracket) to the rack using two pan-head screws with nylon washers. Use a #2 Phillips screwdriver and tighten the screws to secure the hub to the rack. 3. Install any PCs, additional hubs, or other devices in your stack. For information on connecting the hub, refer to “Connecting the Hub” on page 3-4. Installation 3-3 Installation Guide for the Model EN516 Ethernet Hub . 7171 Normal/Uplink 16 8 Link 9 1 Power Data Collision Figure 3-1. Installing mounting brackets to the hub and to a rack Connecting the Hub This section discusses connecting to the hub, cascading to multiple hubs, and connecting to other NETGEAR products. For instructions on connecting to the ports or connecting to other NETGEAR products, refer to the following sections: • “Connecting to the RJ-45 Ports” on this page • “Connecting to the BNC Port” on page 3-7 • “Connecting to the AUI Port” on page 3-9 • “Connecting to Other NETGEAR Products” on page 3-10 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. The UTP ports, with the exception of port 16, are MDI-X (or Normal) ports. To connect any of the Normal ports to a PC, a server, or another device with an MDI (or Uplink) port, you can simply use a regular UTP cable. To connect any of the Uplink ports to another Uplink port, use an RJ-45 crossover cable. 3-4 Installation Installation Guide for the Model EN516 Ethernet Hub Port 16 is switchable between Normal (MDI-X) and Uplink (MDI) positions and should be configured according to the following guidelines: • Set the Normal/Uplink push button to the Normal position and use a straight-through cable if the remote end of the cable is connected to an MDI-wired device such as a PC. • Set the Normal/Uplink push button to the Uplink position and use a straight-through cable if the remote end of the cable is connected to an MDI-X device such as a 10 Mbps or 100 Mbps hub or repeater. For further cabling guidelines, refer to Appendix B, “Cabling Specifications.” 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. Normal/Uplink 16 89 1 Power Data Collision 21 34FA Key: 1 = Network adapter card with RJ-45 connector 2 = UTP cable to Model EN516 hub Figure 3-2. Connecting a workstation to an RJ-45 port on the Model EN516 hub Note: Ethernet specifications limit segments to 328 feet (100 m) in length. Installation 3-5 Installation Guide for the Model EN516 Ethernet Hub Cascading refers to connecting hubs together to increase the number of ports, or the number of users supported on the network. The RJ-45, BNC, or AUI ports can be used to cascade hubs together. Figure 3-3 illustrates multiple hubs cascaded in a hierarchical star. 1 Model EN516 hub Model EN516 hub Model EN516 hub Model EN516 hub Model EN516 hub Model EN516 hub Model EN516 hub 765 A 432 B 30EA 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 hubs, as shown in Figure 3-3. For example, when PC “A” communicates with PC “B,” the communication path goes from hub 5 to hub 7, passing through hubs 2, 1, and 4. 3-6 Installation Installation Guide for the Model EN516 Ethernet Hub Figure 3-4 illustrates multiple hubs cascaded in a daisy-chain style. 1 Model EN516 hub Model EN516 hub Model EN516 hub 3 2 000029EA Key: 1 = Model EN516 hub with Normal/Uplink push button set to Normal position 2 and 3 = Model EN516 hub with Normal/Uplink push button set to Uplink position Figure 3-4. Cascading multiple hubs daisy-chain style through the RJ-45 ports Note: Each twisted pair cable between two hubs is counted as one network segment. When cascading hubs daisy-chain style through the twisted pair cable, stay within Ethernet specifications and make sure the total hub count does not exceed five hubs. Connecting to the BNC Port The BNC port at the rear panel of the Model ...
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