Inhaltszusammenfassung zur Seite Nr. 2
Installation Manual Fast EtherHub-12se Smart Fast Ethernet Hub with 11 100BASE-TX Ports and 1 100BASE-FX Port
Inhaltszusammenfassung zur Seite Nr. 3
Copyright (c) 1996 by Accton Technology Corporation. All rights reserved. No part of this document may be copied or reproduced in any form or by any means without the prior written consent of Accton Technology Corporation. Accton makes no warranties with respect to this documentation and disclaims any implied warranties of merchantability, quality, or fitness for any particular purpose. The information in this document is subject to change without notice. Accton reserves the right to make rev
Inhaltszusammenfassung zur Seite Nr. 4
Package Contents Carefully unpack the contents of the package and verify them against the checklist given below. Package Checklist æ Fast EtherHub-12se Model No. EH3012-TF-SC or EH3012-TF-ST Model EH3012-TF-SC has an SC-type fiber connector. Model EH3012-TF-ST has an ST-type fiber connector. æ AC power cord (optional) æ Four rubber foot pads æ Installation manual æ Warranty registration card Please inform your dealer immediately should there be any wrong, missing, or damaged parts. If possible
Inhaltszusammenfassung zur Seite Nr. 5
Quick Installation The Fast EtherHub-12se is a Class II repeater. It contains 11 100BASE-TX Fast Ethernet RJ-45 ports, as well as 1 100BASE-FX fiber optic port that supports connection using standard multimode fiber cable. The smart design built into the front display panel provides a friendly interface that simplifies installation and network troubleshooting. If you are already familiar with basic network operations, you should be able to install this hub as described below: 1. Unpack the Fa
Inhaltszusammenfassung zur Seite Nr. 6
Fast EtherHub-12se User’s Guide If your twisted-pair connections are less than 100 meters long, then the length of the fiber optic cable can be extended. Refer the section 'LVWDQFH /LPLWIRU)DVW(WKHUQHW&DEOLQJ in Chapter 2 for a description of how to calculate the maximum length of fiber optic cable that can be used in your particular environment. 6. You can make a cascaded connection to another hub by running straight- through twisted-pair cable from the daisy-chain port 12 (MDI) on this h
Inhaltszusammenfassung zur Seite Nr. 7
About this Guide This guide is designed for the experienced network installer. It describes how to install and operate Accton’s Fast EtherHub. After reading this manual, you should be able to use the front display panel and configure options to manage all your network connections. This manual covers the following topics: Chapter 1 - Product Overview Brief description of Fast Ethernet, followed by a description of this hub and a summary of its important features and specifications. Chapter 2 -
Inhaltszusammenfassung zur Seite Nr. 8
Contents Chapter 1: Product Overview .................................................1-1 Introduction to Fast Ethernet .....................................................................................1-1 Accton’s Fast EtherHub System.................................................................................1-1 Basic Features............................................................................................................1-2 Chapter 2: Installing the System................
Inhaltszusammenfassung zur Seite Nr. 9
Fast EtherHub-12se User’s Guide Rear Panel ...............................................................................................................4-6 Power Socket........................................................................................................4-6 Appendix A: Troubleshooting ................................................A-1 Diagnosing Hub Indicators........................................................................................A-1 System Diagnostics...
Inhaltszusammenfassung zur Seite Nr. 10
Fast EtherHub-12se User’s Guide Limited Warranty ......................................................................................................E-4 Customer Remedies ..............................................................................................E-4 Return Process......................................................................................................E-5 Accton Distributors .....................................................................................
Inhaltszusammenfassung zur Seite Nr. 11
Chapter 1: Product Overview Introduction to Fast Ethernet Standard 10 Mbps Ethernet has served well for past generations of 286 and 386 machines performing simple file transfers. However, with the inevitable growth in corporate network size and the introduction of fully-functional 32-bit PC architectures, and operating systems running complex applications, 10 Mbps Ethernet has become a serious bottleneck. With the recent flood of choices for upgrading media bandwidth, 100 Mbps Fast Ethernet
Inhaltszusammenfassung zur Seite Nr. 12
Fast EtherHub-12se User’s Guide Basic Features • Conforms to the IEEE 802.3u repeater specification for 100BASE-TX and 100BASE-FX • Transmits data at 100 Mbps for demanding applications • Friendly design that monitors network utilization, collisions, link and port partition status • LED indicator panel including Utilization and Collision rate indicators for reporting hub activity and facilitating problem diagnosis • RJ-45 ports for 100BASE-TX connection using unshielded or shielded twisted pai
Inhaltszusammenfassung zur Seite Nr. 13
Fast EtherHub-12se User’s Guide These Fast EtherHubs support the following basic system safeguards: • This hub features automatic partitioning and reconnection, jabber lockup protection, and automatic polarity detection for network cabling. • With automatic partitioning and reconnection, any port is automatically isolated if excessive collisions occur on it. When the collision rate subsides, the port is automatically reconnected. • With the jabber lock-up function, the hub automatically stops t
Inhaltszusammenfassung zur Seite Nr. 14
Chapter 2: Installing the System This chapter provides information on pre-installation requirements, establishing network connections, and configuring the system. Pre-Installation Requirements Before you start making network connections to the Fast EtherHub-12se, make sure you can provide the right operating environment, including power requirements, and proximity to other network devices that are to be connected. Verify the following installation requirements: • Power requirements: 100 to 24
Inhaltszusammenfassung zur Seite Nr. 15
Fast EtherHub-12se User’s Guide model you purchased) to connect any compatible network device to the TX/RX jacks on the fiber optic port. Note: The EH3012-TF-SC provides an SC-type fiber connector. The EH3012-TF-ST provides an ST-type fiber connector. Making RJ-45 Connections 1. Prepare category 5 straight-through twisted-pair cable (100W) with RJ-45 plugs at both ends. 2. If you are making a connection to a server or workstation (i.e., a dedicated connection to an end-node device), be sure th
Inhaltszusammenfassung zur Seite Nr. 16
Fast EtherHub-12se User’s Guide Distance Limit for Fast Ethernet Cabling There are two common ways to calculate maximum cable length. The first way, which is refered to as the “Simplified Cable Length Constraints” method assumes that the maximum permissible cable length is used to connect various end-node devices (such as workstations or servers) to the hub. A more careful method of calculating maximum cable length, referred to as the “Precise Length Budgeting” method, requires you to measur
Inhaltszusammenfassung zur Seite Nr. 17
Fast EtherHub-12se User’s Guide Precise Cable Length Budgeting If you plan on installing a network for a small office, it may not be convenient to place hubs within 5 meters of each other, and then run up to 100 meters of cabling for each end user. This kind of installation can be very messy and wastes a lot of cabling. Depending on how your users are spread out, it may be more convenient to run a longer length of inter-hub cabling (say 50 meters or more), and then run shorter lengths of cab
Inhaltszusammenfassung zur Seite Nr. 18
Fast EtherHub-12se User’s Guide On the other hand, if two hubs are connected via 100m of fiber optic cabling, then the total length of remaining cabling that can be used to connect two end- nodes to hub 1 and 2 respectively is 367m - (2 x 80m) - (0.9 x 100) = 117m. A more detailed example of calculating the maximum cable length for fiber optics is included in the section on 3UHFLVH*XLGHOLQHVIRU&RQILJXULQJ0XOWLSOH+XEV in Chapter 3. Providing Power to the EtherHub 1. Power on the hub by
Inhaltszusammenfassung zur Seite Nr. 19
Fast EtherHub-12se User’s Guide Verifying System Operation Verify that all attached devices have a valid connection. The hub monitors link status for each port. If any device is properly connected to the hub and transmitting a link beat signal, the Link indicator lights up for the corresponding port. If the Link indicator fails to light up when you connect a device to the hub, check the following items - • Be sure the twisted-pair cable is properly attached to the connected device and the h
Inhaltszusammenfassung zur Seite Nr. 20
Chapter 3: Configuring the Network The Fast EtherHub-12se allows great flexibility in configuring your network. You can use it in a stand-alone or multiple hub configuration. Moreover, this hub also provides a fiber optic port which can be used to connect to any compatible 100BASE-FX device (e.g., a switch or router). Some of the common applications for this hub are described in this chapter. Stand-Alone These hubs can be used in a simple stand-alone configuration as illustrated below. In
