User manual ZYXEL ES-1124

[. . . ] Dimension ES-1124 Unmanaged 24-port Ethernet Switch with 4 Gigabit Ports User's Guide April 2004 Version 1. 00 Dimension ES-1124 Ethernet Switch Copyright Copyright © 2004 by ZyXEL Communications Corporation The contents of this publication may not be reproduced in any part or as a whole, transcribed, stored in a retrieval system, translated into any language, or transmitted in any form or by any means, electronic, mechanical, magnetic, optical, chemical, photocopying, manual, or otherwise, without the prior written permission of ZyXEL Communications Corporation. Disclaimer ZyXEL does not assume any liability arising out of the application or use of any products, or software described herein. Neither does it convey any license under its patent rights nor the patents rights of others. ZyXEL further reserves the right to make changes in any products described herein without notice. [. . . ] The switch is targeted at workgroup, department or backbone computing environments for SME (small, medium enterprise) businesses. Figure 1-1 The ES-1124 The ES-1124 features a "store-and-forward " switching scheme. This allows the switch to auto-learn and store source address in an 8K-entry MAC address table. All ports are auto-crossover, that is auto-MDIX ports (Media Dependent Interface Crossover), so you may use either a straight through Ethernet cable or crossover Ethernet cable for all Ethernet port connections. Auto-crossover ports automatically sense whether they need to function as crossover or straight ports, so crossover cables can connect both computers and switches/hubs. The ES-1124 has 24 auto-crossover 10/100Base-TX RJ-45 ports and 2 auto-detect gigabit ports for higher connection speed. Getting To Know Your Switch 1-1 Dimension ES-1124 Ethernet Switch 1. 2 · · · · · · · · · · · · · · · · · · Features Conforms to IEEE802. 3 10Base-T, IEEE802. 3u 100Base-TX, IEEE802. 3ab 1000Base-T, IEEE802. 3z Gigabit fiber standards. Store-and-forwarding switching architecture for abnormal packet filtering. No-Blocking full wire speed architecture Fan free design Power, LNK/ACT and FDX/COL LEDs. Standard 19-inch rack-mount design. 1. 3 Package Contents Compare the contents of your ES-1124 Ethernet Switch package with the checklist below. · ES-1124 Ethernet switch · Power cord · Quickstart Guide · This User's Guide in CD-ROM format. · Four rubber feet · Rack mount brackets 1. 4 Ethernet Switching Technology Ethernet Switching Technology has dramatically boosted the total bandwidth of a network, eliminated congestion problems inherent with CSMA/CD (Carrier Sense multiple access with Collision Detection) protocol, and greatly reduced unnecessary transmissions. 1-2 Getting To Know Your Switch Dimension ES-1124 Ethernet Switch This revolutionized networking in a number of ways: By allowing two-way, simultaneous transmissions over the same port (Fullduplex), which essentially doubled the bandwidth. · Reducing the collision domain to a single switch-port, which eliminated the need for carrier sensing. · Using the store-and-forward technology's approach of inspecting each packet to intercept corrupt or redundant data, switching eliminated unnecessary transmission that slowed the network. · By employing address learning, which replaced the inefficient receiving port. · Auto-negotiation regulates the speed and duplex of each port, based on the capability of both devices. Flow-control allows transmission from a 100Mbps node to a 10Mbps node without loss of data. Auto-negotiation and flow-control may require disablement for some networking operations involves legacy equipment. Disabling the auto-negotiation is accomplished by fixing the speed or duplex of a port. Ethernet Switching Technology supplied higher performance at costs lower than other solutions. Wider bandwidth, no congestion, and the reduction in traffic is why switching is replacing expensive routers and inefficient hubs as the ultimate networking solution. 1. 5 Applications This section provides two network topology examples in which the switch is used. By using the uplink port, the switch can connect with another switch or hub to interconnect other workgroups to form a larger switched network. The distance between two switches via fiber cable can be up to 550 meters (multi-mode fiber) or 10 kilometers (single-mode fiber). 1. 5. 1 Standalone Workgroup The switch can be used as a standalone switch to which, computers, servers and printer server are directly connected to form a small workgroup. Getting To Know Your Switch 1-3 Dimension ES-1124 Ethernet Switch Figure 1-2 Standalone ES-1124 Workgroup Example 1. 5. 2 Bridging With its large address table (8000 MAC address entries) and high performance, the switch is an ideal solution for department networks to connect to the corporate backbone or for connecting network segments. [. . . ] Verify that proper network cable type is used and its length does not exceed 100 meters. For more information on network cable types, see the Front Panel Connections section. 3. 1. 4 FDX/COL LED The FDX/COL LED blinks. Table 3-4 Troubleshooting FDX/COL LED STEP 1 CORRECTIVE ACTION Some collisions in the network are normal. If the FDX/COL (Giga) LED blinks continuously, proceed to the steps below. [. . . ]