Intel PCLA2152B manuale d’uso

Intel Express 10/100 Stackable Hub User Guide[...]

Copyright © 1997, Intel Corporation. All rights reserved. Intel Corporation, 5200 NE Elam Young Parkway, Hillsboro OR 97124-6497 Intel Corporation assumes no responsibility for errors or omissions in this manual. Nor does Intel make any commitment to update the information contained herein. * Other product and corporate names may be trademarks of [...]

1 Quick Start 1. Install the Express 10/100 Stackable Hub in a rack or on a shelf or table, plug it in, and turn the power on. 2. Connect either 100BASE-TX devices or 10BASE-T devices to the ports. 3. Check the LEDs for links. You’re done. Next steps (Optional) Continue to the next page if you want to connect multiple hubs. Rack: Use the four sma[...]

2 (Optional) Connecting multiple hubs Connecting hubs running at 100 Mbps to hubs running at 10 Mbps Use an Intel Cascade Cable to connect the hubs. Hubs running at 100 Mbps can talk to each other, and hubs running at 10 Mbps can talk to each other. However, hubs running at 100 Mbps can’t talk to hubs running at 10 Mbps without bridging equipment[...]

3 3 Over view This guide covers both the 12- and 24-port versions of the Intel Express 10/100 Stackable Hub. • Intel product code: EE110TX12 • Intel product code: EE110TX24 • 12 fixed TPE ports • 24 fixed TPE ports • Stack eight hubs (mixed 12- or 24-port) • Stack eight hubs (mixed 12- or 24-port) • Hub management through optional •[...]

4 Connection Guidelines Connecting 100BASE-TX devices • Use Category 5 twisted-pair Ethernet (CAT 5 TPE) cable. • Always limit the distance between devices connected with TPE cable to 100 meters (the IEEE specification requires this). • Use a crossover cable to connect the hub to a switch. Use a straight-through cable to connect the hub to a [...]

5 Example Configurations Mix ed 10 Mbps and 100 Mbps en vir onment A stack of Express 10/100 Stackable Hubs can contain hubs running at both 10 and 100 Mbps. However, the hubs running at 10 Mbps and the hubs running at 100 Mbps are on separate network segments. These two segments can’t communicate with each other unless you use another device to [...]

6 Bridging with the Express 10/100 Fast Ethernet Switch A switch with individual ports capable of operating at 10 or 100 Mbps can bridge 10 Mbps and 100 Mbps segments. No configuration of your network operating system is needed. Express 10/100 Fast Ethernet Switch Category 5 TPE (100m max.) Category 3, 4, or 5 TPE (100m max.) Port 8 Xmt Link Col[...]

7 Bridging with the Express 10/100 Downlink The Express 10/100 Downlink has two ports that operate at either 10 or 100 Mbps. Each port automatically senses the speed of the attached device. All you need to do is set the speed of the hubs. No configuration of your network operating system is needed. Intel Express  10/100 Downlink Category 5 TPE ([...]

8 Extending the 100 Mbps network topology You can extend the network topology only by connecting hubs to a switch, bridge, or router. You can’t extend the topology by daisy- chaining hubs together. In the example below, the network diameter is extended to 400 meters by connecting the two hub stacks to an Intel Express 10/100 Fast Ethernet Switch.[...]

9 Extending the 10 Mbps network topology To extend the 10BASE-T network topology, you can attach hubs to a switch or daisy-chain the hubs using TPE cabling. If you attach a stack of hubs to a switch, each stack gets its own 10 Mbps of bandwidth. Attaching hubs to a switch The illustration below shows two stacks of Express 10/100 Stackable Hubs oper[...]

10 Understanding LEDs P or t LEDs The LEDs above a port provide information about the port’s configuration and status. Green LED (left side) Amber LED (right side) LED Status Meaning Green Solid Port has a link. Blinking Receive activity detected on port. Off No link detected. Amber Sol id Port is disabled by management (not applicable with[...]

11 Unit LEDs Unit LEDs indicate the status of a hub’s power supply, hub speed, collision occurrences in a hub or stack of hubs, and whether a hub is managed. 10BASE-T 100BASE-TX Collision Managed Status Power Change hub speed LED Status Meaning 10BASE-T O n Hub is operating at 10 Mbps. 100BASE-TX O n Hub is operating at 100 Mbps. Collision Blinki[...]

12 Cab ling Requirements Incorrect cabling is often the cause of network problems. Read the next two pages if you’re unsure of your requirements. 100B ASE-TX requirements The 100BASE-TX Fast Ethernet specification requires you use CAT 5 unshielded twisted-pair (UTP) or shielded twisted-pair (STP) cabling to operate at 100 Mbps (UTP and STP are co[...]

13 Straight-thr ough vs. c r osso ver cab les Ports on the hub are wired MDI-X (media dependent interface crossover) so you can use a straight-through cable when connecting to a workstation or server (network adapter cards are wired MDI). For direct connection to another MDI-X port (hub and switch ports), you must use a crossover cable. Determining[...]

14 T r oubleshooting No link (green LED is off). • Remove the cable and plug it in again. Wait up to six seconds for a link. • If you’re using the wrong type of cable, either straight-through or crossover, the green LED above the port will not come on. Use the other type of cable. • Make sure the device you’ve connected to a port is a 10B[...]

15 Frequently Asked Questions I have 10 Mbps and 100 Mbps hubs connected with an Intel Cascade Cable. Can they talk to each other? No. All hubs running at 100 Mbps are in one collision domain (or segment) and all hubs running at 10 Mbps are in a separate collision domain. See pages 5-7 for bridging options. Then why would I connect hubs running at [...]

16 Can I configure a full-duplex link between the hub and another device? Only to the optional Ethernet Module or Fiber Module. The external ports on the modules are switched ports and are capable of full duplex. The base ports of the hubs aren’t capable of full-duplex operation. Can I connect a 100BASE-T4 device to the hub? If the device is capa[...]

17 Limited Hardware Warranty Intel warrants to the original owner that the hardware product delivered in this package will be free from defects in material and workmanship for three (3) years following the latter of: (i) the date of purchase only if you register by returning the registration card as indicated thereon with proof of purchase; or (ii)[...]

18 Federal Communications Commission (FCC) Statement 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. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment[...]

19 WARNUNG Das System wurde für den Betrieb in einer normalen Büroumgebung entwickelt. Der entwickelt. Der Standort sollte: · sauber und staubfrei sein (Hausstaub ausgenommen); · gut gelüftet und keinen Heizquellen ausgesetzt sein (einschließlich direkter Sonneneinstrahlung); · keinen Erschütterungen ausgesetzt sein; · keine starken, von e[...]

20 World Wide Web & Internet FTP Intel BBS Access Intel’s World Wide Web home page Use Intel’s Bulletin Board. Dial in by or download information using modem at 8-N-1, and up to 14.4 Kbps. anonymous FTP. T r oubleshooting ✓ ✓ ✓ ✓ ✓ Software updates ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ Installation notes ✓ ✓ ✓ ✓ ✓ Prod[...]