HP Compaq Netelligent 5114, Compaq Netelligent 5226, Compaq Netelligent 5226A, Compaq Netelligent 5708FX Reference Guide
WHITE PAPER
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September 1996 |
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Compaq Computer |
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Corporation |
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Enterprise Group |
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Networking Products |
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Division |
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C O N T E N T S |
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The Bandwidth Crunch ........ 3 . |
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Migrating to Fast Ethernet ... 3 . |
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Competing Technologies ..... 4 . |
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Fiber Distributed Data |
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Interface ................................ 4 . |
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Asynchronous Transfer Mode ... 4 . |
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Netelligent Repeater and |
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Switch Overview ................ 4 . |
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Netelligent 10 Mb/s Ethernet6 . |
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Netelligent Dual-Speed |
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Ethernet Repeater .............. 6 . |
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Netelligent Dual-speed |
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Ethernet Switch.................. 7 . |
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Netelligent 100 Mb/s Ethernet |
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Repeater ........................... 8 . |
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Netelligent 1000 10 Mb/s |
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Unmanaged Repeaters .......... 10 . |
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Netelligent 1000 10 or 100 Mb/s |
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Unmanaged Repeaters .......... 11 . |
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Netelligent 1000 100 Mb/s 8-Port |
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Unmanaged TX Repeater ....... 12 . |
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Netelligent 1000 100 Mb/s 24-Port . |
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Netelligent 2000 Manageable, |
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Netelligent 3000 10 Mb/s |
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Manageable, Segmentable |
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Repeaters |
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Netelligent 3000 Manageable, |
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Stackable 100 Mb/s Repeaters |
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Netelligent 5006 6-Port 10/100 |
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Netelligent 5006 6-Port 10/100-FL . |
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Netelligent 5012 12-Port 10/100 |
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10/100 Switch................. 20 |
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Netelligent 5506 and 5606 |
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100Base-T Switches ........ 21 |
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Compaq Netelligent™
Repeater and Switch Products
The acquisition of NetWorth, Inc. by Compaq Computer Corporation represents a firm commitment by Compaq to offer complete desktop-to-desktop client/server solutions that are unmatched in price and performance. The newly formed Networking Products Division provides a broad range of industry standard high-performance network solutions including repeaters, switches, routers, controllers, and integrated management software. Since its inception in 1985, NetWorth established itself as a price/performance leader in the networking industry. Today, Compaq continues the same leadership role with its proven Fast Ethernet technology and the most complete product line in the networking industry.
041A/0996 |
1 |
COMPAQ NETELLIGENT REPEATER AND SWITCH PRODUCTS (cont’d.)
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2
041A/0996
N O T I C E
The information in this publication is subject to change without notice.
T H E C O M P E T I T I V E I N F O R M A T I O N C O N T A I N E D I N T H I S
P U B L I C A T I O N I S B A S E D O N D A T A A V A I L A B L E F R O M P U B L I C
S O U R C E S A T T H E T I M E O F P U B L I C A T I O N . C O M P A Q C O M P U T E R C O R P O R A T I O N S H A L L N O T B E R E S P O N S I B L E F O R A N Y
I N A C C U R A C I E S , E R R O R S , O R O M I S S I O N S I N I N F O R M A T I O N C O N T A I N E D H E R E I N , I N C L U D I N G B U T N O T L I M I T E D T O
I N F O R M A T I O N O B T A I N E D F R O M T H I R D P A R T Y S O U R C E S ,
I N C L U D I N G P U B L I C A T I O N S O F O T H E R C O M P A N I E S , T H E P R E S S , O R C O M P E T I T I V E D A T A O R G A N I Z A T I O N S . I N N O E V E N T W I L L
C O M P A Q B E L I A B L E F O R D I R E C T , I N D I R E C T , S P E C I A L ,
I N C I D E N T A L , O R C O N S E Q U E N T I A L D A M A G E S I N C O N N E C T I O N W I T H T H E U S E O F T H E M A T E R I A L C O N T A I N E D I N T H I S
P U B L I C A T I O N , E V E N I F A D V I S E D O F T H E P O S S I B I L I T Y O F S U C H D A M A G E S . C O M P A Q R E S E R V E S T H E R I G H T T O M A K E
I M P R O V E M E N T S O R C H A N G E S T O T H I S P U B L I C A T I O N A N D T H E P R O D U C T S A N D S E R V I C E S D E S C R I B E D A T A N Y T I M E , W I T H O U T N O T I C E O R O B L I G A T I O N .
This publication does not constitute an endorsement of the product or products that were tested. The configuration or configurations tested or described may or may not be the only available solution. This test is not a determination of product quality or correctness, nor does it ensure compliance with any federal, state or local requirements. Compaq does not warrant products other than its own strictly as stated in Compaq product warranties.
Compaq, Fastart, Compaq Insight Manager, SmartStart, NetFlex, DirectPlus, QuickFind, PaqFax, CompaqCare (design) are registered in United States Patent and Trademark Office.
Netelligent, Smart Uplink, Scalable Clock Architecture are trademarks of Compaq Computer Corporation.
Other product names mentioned herein may be trademarks and/or registered trademarks of their respective companies.
©1996 Compaq Computer Corporation. All rights reserved. Printed in the U.S.A.
Microsoft, Windows, Windows NT, Windows NT Advanced Server, SQL Server for Windows NT are trademarks and/or registered trademarks of Microsoft Corporation.
Compaq Netelligent Repeater and Switch Products
Version 1.2 (September, 1996)
Document Number 041A/0996
COMPAQ NETELLIGENT REPEATER AND SWITCH PRODUCTS (cont’d.)
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T H E B A N D W I D T H C R U N C H
For most of the 1980s, 10 megabit per second (Mb/s) Ethernet offered sufficient bandwidth for most network applications. Eventually, the development of client/server applications and increasing numbers of network connections quickly consumed that bandwidth. Segmentation technologies were developed to divide networks into smaller segments by bridging and routing network traffic, temporarily relieving network congestion. However, segmentation created a need for more sophisticated ways to manage enterprise networks.
Today, many organizations use Ethernet switching to segment all or part of their networks, providing a dedicated 10 Mb/s of bandwidth to each individual connection. In fact, Ethernet switching is currently the fastest growing segment of the networking market, averaging 341% growth per year. Although Ethernet switching improves the bandwidth crunch for most overburdened networks, many newer applications, such as imaging, publishing, and interactive databases demand a more robust solution. Also, newer PCI-based computers, with their increased processing power, and multimedia applications, which add audio and video, challenge the onceadequate capabilities of standard 10 Mb/s switching technology.
To meet growing bandwidth needs, Fast Ethernet has emerged as the network technology of choice. Just as the 80286 processor has evolved to the Pentium (and now the Pentium Pro) processor, 10 Mb/s Ethernet has evolved to Fast Ethernet.
M I G R A T I N G T O F A S T E T H E R N E T
Many organizations consider Fast Ethernet the logical migration path from 10 Mb/s Ethernet. Here are a few reasons why Fast Ethernet wins over competing technologies in the high-speed networking marketplace:
∙It’s Easy to Migrate - When you migrate to Fast Ethernet, you don’t need to spend time learning about the technology. Because Fast Ethernet evolved from standard 10 Mb/s Ethernet, most of the same rules apply. There also is no need to invest in new management and diagnostic tools.
∙It’s Ethernet Compatible - Fast Ethernet uses the same packets and protocols as 10 Mb/s Ethernet. Therefore, there is no need learn or maintain a new protocol.
∙It’s Plug and Play - Fast Ethernet supports all major network wiring systems, making it a “drop-in” enhancement for 10Base-T networks. In addition, the latest PC network controller cards support both 10 Mb/s and 100 Mb/s modes. Today’s PCs are Fast Ethernet-ready at the desktop.
∙It’s Cost Effective - Compared to alternative high-speed networking technologies such as ATM and FDDI, Fast Ethernet is a bargain. The cost of Fast Ethernet is almost as low as that of 10 Mb/s Ethernet, yet it offers 10 times the performance. Other high-speed technologies are at least twice the cost of Fast Ethernet.
The Compaq Netelligent Fast Ethernet product line is the most comprehensive in the market today. Competitive offerings typically lack breadth of features, support for Fast Ethernet standards in the product line, or a fully integrated solution. Compaq Netelligent products, which include a mix of 10Base-T and 100Base-T devices, let you migrate to Fast Ethernet at your own speed.
3
041A/0996
COMPAQ NETELLIGENT REPEATER AND SWITCH PRODUCTS (cont’d.)
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C O M PE T I N G T E C H N O L O G I E S
Two main high-speed networking technologies currently compete with Fast Ethernet but are radically different in architecture and implementation: Fiber Distributed Data Interface (FDDI) and Asynchronous Transfer Mode (ATM). The following comparison describes the main characteristics of each technology.
Fiber Distributed Data Interface
FDDI is a proven and well-understood technology that delivers 100 Mb/s bandwidth with little overhead. Based on Token Ring, FDDI was developed as a backbone technology and offers many advanced features. Consequently, FDDI adapters and hubs are complex and expensive. Also, FDDI runs on fiber and twisted-pair cable (Category 5 only), while many installations use Category 3 twisted-pair.
Asynchronous Transfer Mode
ATM is a relatively new type of high-speed technology that uses cell-switching to achieve throughput from speeds of 150 Mb/s up to 640 Mb/s on a single fiber-optic circuit. Although industry analysts view ATM as a long-term strategic technology primarily in backbones and wide area networks (WANs), a lack of standards presents major concerns about its interoperability. Also, because ATM is such a radical departure from today’s LAN technology, it requires expensive, complex, and time-consuming upgrades and learning curves.
N E T E L L I G E N T R E PE A T E R A N D S W I T C H O VE R VI E W
The Compaq Netelligent product line offers a wide variety of innovative, standards-based shared media repeaters and switches.
Shared media Ethernet repeaters, which consist of one or more independent network segments, allow devices such as file servers, disk servers, workstations, and printers to share a common network (segment) so that they can communicate with each other. All devices connected to a particular segment share the bandwidth available on that segment.
Ethernet switches provide each network connection a dedicated 10 Mb/s or 100 Mb/s of bandwidth. In other words, each part is its own network segment. A switch transfers data traffic from each individual segment to its destination without affecting traffic on other segments.
Shared media repeaters and switches can be managed or unmanaged. All managed repeaters support industry-standard SNMP (Simple Network Management Protocol) agents and hub specific MIB (Management Information Base) extensions.
Compaq Netelligent repeaters and switches address the unique needs of workgroup and departmental client/server computing while allowing for future expansion to larger, enterpriselevel networks.
4
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COMPAQ NETELLIGENT REPEATER AND SWITCH PRODUCTS (cont’d.)
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. Netelligent 1000 products include low-cost, unmanaged repeaters tailored to meet the needs of |
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. smaller workgroups, while allowing the workgroups to migrate to larger departmental networks |
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Netelligent 2000 products, designed for department-level networks, support built-in management |
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and high port densities. Included in this product line are a variety of stackable repeaters you can |
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manage via industry-standard SNMP management software, such as Compaq Netelligent |
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. Management Software. Netelligent 2008/2016 repeaters are stackable up to 10 repeaters high. |
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. They feature Extended Repeater Architecture which allows a distance up to 250 feet between |
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Netelligent 3000 products are similar to Netelligent 2000 products, but have additional network |
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segmentation capabilities within each stack of repeaters. These high-end departmental repeaters |
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protect network investments by providing configuration flexibility as network bandwidth |
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requirements increase. As the need arises, Netelligent 3000 stackable repeaters can be logically |
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segmented into independent network segments for greater network security, higher network |
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. performance, and flexible network configurations. Compaq offers segmentable 10 Mb/s and 100 |
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Netelligent 4000 products include chassis-based 10 Mb/s Ethernet modules that are ideal for |
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support more than one departmental network and handle mission-critical data, Netelligent 4000 |
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products provide such features as sophisticated backplanes and redundant power capability. |
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Netelligent 5000 products are based on network switching technology. Netelligent 10/100 |
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the market. Compaq offers 10 Mb/s and 100 Mb/s switches within this product family. |
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041A/0996
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COMPAQ NETELLIGENT REPEATER AND SWITCH PRODUCTS (cont’d.)
N E T E L L I G E N T 10 M B / S E T H E R N E T
P R O D U C T S A N D P O S I T I O N I N G
Ethernet was initiated as a standard by DEC, Intel, and Xerox in the late 1970s and came to market in the early 1980s. The original application for Ethernet was to extend the distance of RS-232 cable from a terminal to the host. Terminal servers allowed serial devices such as dumb terminals and printers to connect to host computers over Ethernet. This allowed serial devices to be located up to 500 meters from the host, compared to the previous limit of 100 feet. When personal computers were introduced, Ethernet was used mainly for disk and printer sharing over the network. The development of Network Interface Controllers (NICs) allowed PCs to share expensive resources over the network and also access mainframe computers using terminal emulation. 10Base-T further increased the popularity of Ethernet by allowing the use of common Category 3 twisted-pair wiring. Even today, 10 Mb/s Ethernet remains the most widely used network technology worldwide.
The Compaq Netelligent heritage is based on a complete line of award-winning 10Base-T repeater and chassis products. As hardware and software technologies advance exponentially, 10Base-T products still lead the worldwide networking marketplace in the number of ports shipped per year. 10Base-T repeaters and NICs are the most affordable means for bringing devices together on a network, and Compaq is a leader in the 10Base-T market, offering low-cost workgroup, stackable, and segmentable repeaters.
N E T E L L I G E N T D U A L - S PE E D E T H E R N E T R E PE A T E R P R O D U C T S A N D P O S I T I O N I N G
The migration from 10 Mb/s Ethernet to 100 Mb/s Ethernet typically involves a complete replacement of the legacy 10 Mb/s repeater with a new 100 Mb/s repeater. If the NICs do not support dual-speed operation, they must also be swapped out. Fortunately, many new NICs operate in either 10 Mb/s or 100 Mb/s mode. Most of these cards autosense the speed of the repeater and adjust to the appropriate data rate. Compaq is the first company to leverage this dual-speed ability into the repeater.
The Netelligent dual-speed repeater supports the gradual migration from 10 Mb/s to 100 Mb/s within a single hub. The repeater houses two internal repeaters, one that operates at 10Mb/s and the other at 100 Mb/s. Each port on the hub connects to both repeaters. When a port receives a transmission, it autosenses the speed of the NIC attached to it and channels the data to the appropriate repeater in the hub. This innovative technology has been enthusiastically received by customers.
Many installations still have workstations, printers, and laptops that only support 10 Mb/s Ethernet. The dual-speed repeater lets you migrate to Fast Ethernet at your own pace. Simply install the repeater, add a dual-speed NIC to the server for users who need Fast Ethernet
6
041A/0996
COMPAQ NETELLIGENT REPEATER AND SWITCH PRODUCTS (cont’d.)
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041A/0996
connectivity, and attach the network wiring. Dual-speed repeaters save time and money, as they eliminate the need to rewire the repeater connection every time you upgrade from 10 Mb/s to 100 Mb/s.
N E T E L L I G E N T D U A L - S PE E D E T H E R N E T S W I T C H P R O D U C T S A N D P O S I T I O N I N G
Netelligent 10/100 switches are designed for department-level needs but provide enterprise-level features. These switches protect your investment by letting you add product enhancements as you need them. Netelligent 10/100 switches allocate a dedicated 10 Mb/s of bandwidth to each port and a 100 Mb/s modular uplink to servers and network backbones.
There are two primary applications for network switches. The first application is to connect multiple 10 Mb/s shared media repeaters into a network switch port, thereby segmenting each repeater from the next. This isolates network traffic within a single collision domain. If traffic is destined for another network, it passes through the switch at wire speed. The high-speed uplink connection on the switch connects to the enterprise backbone. The second application is to provide each workstation on the network a dedicated 10 Mb/s of bandwidth and switch the workstation traffic to a high-speed uplink connected to a server. Netelligent switches are designed with optimum flexibility for both applications. With support for over 8,000 MAC addresses, multiple Ethernet media options, and modular high-speed uplink technology, Netelligent 10/100 switches are the most flexible solutions for integrating legacy and high-speed networks.
All four versions of Netelligent 10/100 switches support a common set of high-speed modules. You can buy a 10/100 switch now to meet your current needs and use the same switch in the future as new high-speed technologies are available. Each switch uses a shared memory design which gives each switching function wire-speed access to a pool of shared memory. This architecture reduces contention and helps ensure compatibility with newer technologies such as virtual LAN support, and ATM cell-based technology. The software-based design allows Compaq
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