User manual ALCATEL-LUCENT OMNISTACK 6300 - GETTING STARTED GUIDE

Part No. 060190-10, Rev. A December 2003 OmniStack® 6300-24 Getting Started Guide An Alcatel service agreement brings your company the assurance of 7x24 no-excuses technical support. You'll also receive regular software updates to maintain and maximize your Alcatel product's features and functionality and on-site hardware replacement through our global network of highly qualified service delivery partners. Additionally, with 24-hour-a-day access to Alcatel's Service and Support web page, you'll be able to view and update any case (open or closed) that you have reported to Alcatel's technical support, open a new case or access helpful release notes, technical bulletins, and manuals. For more information on Alcatel's Service Programs, see our web page at www.ind.alcatel.com, call us at 1-800-995-2696, or email us at support@ind.alcatel.com. This Manual documents OmniStack 6300-24 hardware and software. The functionality described in this Manual is subject to change without notice. Copyright© 2003 by Alcatel Internetworking, Inc. All rights reserved. This document may not be reproduced in whole or in part without the express written permission of Alcatel Internetworking, Inc. Alcatel®and the Alcatel logo are registered trademarks of Compagnie Financiére Alcatel, Paris, France. OmniSwitch® and OmniStack® are registered trademarks of Alcatel Internetworking, Inc. Omni Switch/RouterTM, SwitchExpertSM, the Xylan logo are trademarks of Alcatel Internetworking, Inc. All other brand and product names are trademarks of their respective companies. 26801 West Agoura Road Calabasas, CA 91301 (818) 880-3500 FAX (818) 880-3505 info@ind.alcatel.com US Customer Support-(800) 995-2696 International Customer Support-(818) 878-4507 Internet-http://eservice.ind.alcatel.com Warning This equipment has been tested and found to comply with the limits for Class B 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 generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions in this guide, may cause interference to radio communications. Operation of this equipment in a residential area is likely to cause interference, in which case the user will be required to correct the interference at his own expense. The user is cautioned that changes and modifications made to the equipment without approval of the manufacturer could void the user's authority to operate this equipment. It is suggested that the user use only shielded and grounded cables to ensure compliance with FCC Rules. This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set out in the radio interference regulations of the Canadian department of communications. Le present appareil numerique níemet pas de bruits radioelectriques depassant les limites applicables aux appareils numeriques de la Class B prescrites dans le reglement sur le brouillage radioelectrique edicte par le ministere des communications du Canada. Compliances and Safety Warnings FCC - Class B This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with instructions, may cause harmful interference to radio communications. However, there is no guarantee that the interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: · Reorient the receiving antenna · Increase the separation between the equipment and receiver · Connect the equipment into an outlet on a circuit different from that to which the receiver is connected · Consult the dealer or an experienced radio/TV technician for help EC Conformance Declaration - Class B SMC contact for these products in Europe is: SMC Networks Europe, Edificio Conata II, Calle Fructuós Gelabert 6-8, 2o, 4a, 08970 - Sant Joan Despí, Barcelona, Spain. This information technology equipment complies with the requirements of the Council Directive 89/336/EEC on the Approximation of the laws of the Member States relating to Electromagnetic Compatibility and 73/23/EEC for electrical equipment used within certain voltage limits and the Amendment Directive 93/68/EEC. For the evaluation of the compliance with these Directives, the following standards were applied: RFI Emission: · Limit class B according to EN 55022:1998, IEC 60601-1-2 (EMC, medical) · Limit class A for harmonic current emission according to EN 61000-3-2/1995 · Limitation of voltage fluctuation and flicker in low-voltage supply system according to EN 61000-3-3/1995 Immunity: · Product family standard according to EN 55024:1998 · Electrostatic Discharge according to EN 61000-4-2:1995 (Contact Discharge: ±4 kV, Air Discharge: ±8 kV) · Radio-frequency electromagnetic field according to EN 61000-4-3:1996 (80 - 1000 MHz with 1 kHz AM 80% Modulation: 3 V/m) · Electrical fast transient/burst according to EN 61000-4-4:1995 (AC/DC power supply: ±1 kV, Data/Signal lines: ±0.5 kV) · Surge immunity test according to EN 61000-4-5:1995 (AC/DC Line to Line: ±1 kV, AC/DC Line to Earth: ±2 kV) v · Immunity to conducted disturbances, Induced by radio-frequency fields: EN 61000-4-6:1996 (0.15 - 80 MHz with 1 kHz AM 80% Modulation: 3 V/m) · Power frequency magnetic field immunity test according to EN 61000-4-8:1993 (1 A/m at frequency 50 Hz) · Voltage dips, short interruptions and voltage variations immunity test according to EN 61000-4-11:1994 (>95% Reduction @10 ms, 30% Reduction @500 ms, >95% Reduction @5000 ms) LVD: MDD: · EN 60950 (A1/1992; A2/1993; A3/1993; A4/1995; A11/1997) · IEC 60601-1 Industry Canada - Class B This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus as set out in the interference-causing equipment standard entitled "Digital Apparatus," ICES-003 of the Department of Communications. Cet appareil numérique respecte les limites de bruits radioélectriques applicables aux appareils numériques de Classe B prescrites dans la norme sur le matériel brouilleur: "Appareils Numériques," NMB-003 édictée par le ministère des Communications. Japan VCCI Class B vi Safety Compliance Warning: Fiber Optic Port Safety CLASS I LASER DEVICE When using a fiber optic port, never look at the transmit laser while it is powered on. Also, never look directly at the fiber TX port and fiber cable ends when they are powered on. Avertissment: Ports pour fibres optiques - sécurité sur le plan optique DISPOSITIF LASER DE CLASSE I Ne regardez jamais le laser tant qu'il est sous tension. Ne regardez jamais directement le port TX (Transmission) à fibres optiques et les embouts de câbles à fibres optiques tant qu'ils sont sous tension. Warnhinweis: Faseroptikanschlüsse - Optische Sicherheit LASERGERÄT DER KLASSE I Niemals ein Übertragungslaser betrachten, während dieses eingeschaltet ist. Niemals direkt auf den Faser-TX-Anschluß und auf die Faserkabelenden schauen, während diese eingeschaltet sind. Underwriters Laboratories Compliance Statement Important! Before making connections, make sure you have the correct cord set. Check it (read the label on the cable) against the following: Operating Voltage Electrical Cord Requirements Operating Voltage 120 Volts Cord Set Specifications UL Listed/CSA Certified Cord Set Minimum 18 AWG Type SVT or SJT three conductor cord Maximum length of 15 feet Parallel blade, grounding type attachment plug rated 15A, 125V 240 Volts (Europe only) Cord Set with H05VV-F cord having three conductors with minimum diameter of 0.75 mm2 IEC-320 receptacle Male plug rated 10A, 250V The unit automatically matches the connected input voltage. Therefore, no additional adjustments are necessary when connecting it to any input voltage within the range marked on the rear panel. vii Wichtige Sicherheitshinweise (Germany) 1. 2. 3. Bitte lesen Sie diese Hinweise sorgfältig durch. Heben Sie diese Anleitung für den späteren Gebrauch auf. Vor jedem Reinigen ist das Gerät vom Stromnetz zu trennen. Verwenden Sie keine Flüssigoder Aerosolreiniger. Am besten eignet sich ein angefeuchtetes Tuch zur Reinigung. Die Netzanschlu ßsteckdose soll nahe dem Gerät angebracht und leicht zugänglich sein. Das Gerät ist vor Feuchtigkeit zu schützen. Bei der Aufstellung des Gerätes ist auf sicheren Stand zu achten. Ein Kippen oder Fallen könnte Beschädigungen hervorrufen. Die Belüftungsöffnungen dienen der Luftzirkulation, die das Gerät vor Überhitzung schützt. Sorgen Sie dafür, daß diese Öffnungen nicht abgedeckt werden. Beachten Sie beim Anschluß an das Stromnetz die Anschlußwerte. Verlegen Sie die Netzanschlußleitung so, daß niemand darüber fallen kann. Es sollte auch nichts auf der Leitung abgestellt werden. 4. 5. 6. 7. 8. 9. 10. Alle Hinweise und Warnungen, die sich am Gerät befinden, sind zu beachten. 11. Wird das Gerät über einen längeren Zeitraum nicht benutzt, sollten Sie es vom Stromnetz trennen. Somit wird im Falle einer Überspannung eine Beschädigung vermieden. 12. Durch die Lüftungsöffnungen dürfen niemals Gegenstände oder Flüssigkeiten in das Gerät gelangen. Dies könnte einen Brand bzw. elektrischen Schlag auslösen. 13. Öffnen sie niemals das Gerät. Das Gerät darf aus Gründen der elektrischen Sicherheit nur von authorisiertem Servicepersonal geöffnet werden. 14. Wenn folgende Situationen auftreten ist das Gerät vom Stromnetz zu trennen und von einer qualifizierten Servicestelle zu überprüfen: a. b. c. d. Netzkabel oder Netzstecker sind beschädigt. Flüssigkeit ist in das Gerät eingedrungen. Das Gerät war Feuchtigkeit ausgesetzt. Wenn das Gerät nicht der Bedienungsanleitung entsprechend funktioniert oder Sie mit Hilfe dieser Anleitung keine Verbesserung erzielen. e. Das Gerät ist gefallen und/oder das Gehäuse ist beschädigt. f. Wenn das Gerät deutliche Anzeichen eines Defektes aufweist. 15. Zum Netzanschluß dieses Gerätes ist eine geprüfte Leitung zu verwenden. Für einen Nennstrom bis 6A und einem Gerätegewicht größer 3kg ist eine Leitung nicht leichter als H05VV-F, 3G, 0.75mm2 einzusetzen. Der arbeitsplatzbezogene Schalldruckpegel nach DIN 45 635 Teil 1000 beträgt 70dB(A) oder weniger. viii Warnings and Cautionary Messages Warning: Warning: This product does not contain any servicable user parts. When connecting this device to a power outlet, connect the field ground lead on the tri-pole power plug to a valid earth ground line to prevent electrical hazards. This switch uses lasers to transmit signals over fiber optic cable. The lasers are compliant with the requirements of a Class 1 Laser Product and are inherently eye safe in normal operation. However, you should never look directly at a transmit port when it is powered on. Wear an anti-static wrist strap or take other suitable measures to prevent electrostatic discharge when handling this equipment. Do not plug a phone jack connector in the RJ-45 port. This may damage this device. Les raccordeurs ne sont pas utilisé pour le système téléphonique! Use only twisted-pair cables with RJ-45 connectors that conform to FCC standards. Warning: Caution: Caution: Caution: Environmental Statement The manufacturer of this product endeavours to sustain an environmentally-friendly policy throughout the entire production process. This is achieved though the following means: · Adherence to national legislation and regulations on environmental production standards. · Conservation of operational resources. · Waste reduction and safe disposal of all harmful un-recyclable by-products. · Recycling of all reusable waste content. · Design of products to maximize recyclables at the end of the product's life span. · Continual monitoring of safety standards. End of Product Life Span This product is manufactured in such a way as to allow for the recovery and disposal of all included electrical components once the product has reached the end of its life. Manufacturing Materials There are no hazardous nor ozone-depleting materials in this product. Documentation All printed documentation for this product uses biodegradable paper that originates from sustained and managed forests. The inks used in the printing process are non-toxic. ix Purpose This guide details the hardware features of the OmniStack 6300 switch, including Its physical and performance-related characteristics, and how to install the switch. Related Publications The following publication gives specific information on how to operate and use the management functions of the switch: The OmniStack 6300 User Guide Also, as part of the switch's firmware, there is an online web-based help that describes all management related features. x Contents Chapter 1: Introduction Overview Switch Architecture Network Management Options Description of Hardware 10/100/1000BASE-T Ports SFP Slots Status LEDs Optional Backup Power Supply Power Supply Receptacles Features and Benefits Connectivity Expandability Performance Management Chapter 2: Network Planning Introduction to Switching Application Examples Collapsed Backbone Network Aggregation Plan Remote Connection with Fiber Cable Making VLAN Connections Application Notes Chapter 3: Installing the Switch Selecting a Site Ethernet Cabling Equipment Checklist Package Contents Optional Rack-Mounting Equipment Mounting Rack Mounting Desktop or Shelf Mounting Installing an Optional SFP Transceiver into the Switch Connecting to a Power Source Connecting to the Console Port Wiring Map for Serial Cable Chapter 4: Making Network Connections Connecting Network Devices 1-1 1-1 1-1 1-1 1-2 1-2 1-2 1-3 1-5 1-5 1-5 1-5 1-5 1-5 1-6 2-1 2-1 2-2 2-2 2-3 2-4 2-5 2-6 3-1 3-1 3-1 3-2 3-2 3-2 3-3 3-3 3-4 3-5 3-5 3-6 3-7 4-1 4-1 xi Contents Twisted-Pair Devices Cabling Guidelines Connecting to PCs, Servers, Hubs and Switches Network Wiring Connections Fiber Optic SFP Devices Connectivity Rules 1000BASE-T Cable Requirements 1000 Mbps Gigabit Ethernet Collision Domain 100 Mbps Fast Ethernet Collision Domain 10 Mbps Ethernet Collision Domain Cable Labeling and Connection Records Appendix A: Troubleshooting Diagnosing Switch Indicators Power and Cooling Problems Installation In-Band Access Appendix B: Cables Twisted-Pair Cable and Pin Assignments 10BASE-T/100BASE-TX Pin Assignments 1000BASE-T Pin Assignments Fiber Standards Appendix C: Specifications Compliances Glossary Index 4-1 4-1 4-1 4-2 4-3 4-4 4-4 4-4 4-5 4-5 4-6 A-1 A-1 A-1 A-1 A-1 B-1 B-1 B-1 B-2 B-3 C-1 C-2 xii Tables Table 1-1. Table 1-2. Table 3-1. Table 4-1. Table 4-2. Table 4-3. Table 4-4. Table 4-5. Table A-1. Table B-1. Table B-2. Port Status LEDs System Status LEDs Serial Cable Wiring Maximum 1000BASE-T Gigabit Ethernet Cable Length Maximum 1000BASE-SX Gigabit Ethernet Cable Lengths Maximum 1000BASE-LX Gigabit Ethernet Cable Length Maximum Fast Ethernet Cable Lengths Maximum Ethernet Cable Length Troubleshooting Chart 10/100BASE-TX MDI and MDI-X Port Pinouts 1000BASE-T MDI and MDI-X Port Pinouts 1-3 1-4 3-7 4-4 4-4 4-4 4-5 4-5 A-1 B-2 B-2 xi Tables xii Figures Figure 1-1. Figure 1-2. Figure 1-3. Figure 1-4. Figure 2-1. Figure 2-2. Figure 2-3. Figure 2-4. Figure 3-1. Figure 3-2. Figure 3-3. Figure 3-4. Figure 3-5. Figure 3-6. Figure 3-7. Figure 4-1. Figure 4-2. Figure 4-3. Figure B-1. Front and Rear Panels Port LEDs System LEDs Power Supply Receptacle Collapsed Backbone Network Aggregation Plan Remote Connection with Fiber Cable Making VLAN Connections RJ-45 Connections Attaching the Brackets Installing the Switch in a Rack Attaching the Adhesive Feet Inserting an SFP Transceiver into a Slot Power Receptacle Serial Port (DB-9 DTE) Pin-Out Making Twisted-Pair Connections Network Wiring Connections Making SC Port Connections RJ-45 Connector Pin Numbers 1-1 1-3 1-4 1-5 2-2 2-3 2-4 2-5 3-2 3-3 3-4 3-4 3-4 3-6 3-6 4-1 4-2 4-3 B-1 xiii Figures xiv Chapter 1: Introduction Overview The Gigabit Ethernet Switch is an intelligent multilayer switch (Layer 2 and 4) with 24 10/100/1000BASE-T ports, four of which are combination ports that are shared with four SFP transceiver slots. There is also an SNMP-based management agent embedded on the main board. This agent supports both in-band and out-of-band access for managing the switch. This switch provides a broad range of powerful features for Layer 2 switching, delivering reliability and consistent performance for your network traffic. It brings order to poorly performing networks by segregating them into separate broadcast domains with IEEE 802.1Q compliant VLANs, and empowers multimedia applications with multicast switching and CoS services. 10/100/1000 Mbps RJ-45 Ports SFP Slots 1 3 5 7 9 11 13 15 17 19 21 23 System Indicators OmniStack 6300-24 1000=Green 10/100=Yellow 23 Act Link/ FDX Power Diag BPS 21 22 23 24 1 3 5 7 9 11 13 15 17 19 21 Console 2 4 6 8 10 12 14 16 18 20 22 24 Act Link/ FDX 2 4 6 8 10 12 14 16 18 20 22 24 Redundant Power socket Port Status Indicators Power Socket Console Port 100-240V~, 50-60Hz 2A BPS DC IN 12V 8.5A Figure 1-1. Front and Rear Panels Switch Architecture The Gigabit Ethernet Switch employs a wire-speed, non-blocking switching fabric. This permits simultaneous wire-speed transport of multiple packets at low latency on all ports. This switch also features full-duplex capability on all ports, which effectively doubles the bandwidth of each connection. The switch uses store-and-forward switching to ensure maximum data integrity. With store-and-forward switching, the entire packet must be received into a buffer and checked for validity before being forwarded. This prevents errors from being propagated throughout the network. Network Management Options This switch contains a comprehensive array of LEDs for "at-a-glance" monitoring of network and port status. It also includes a management agent that allows you to configure or monitor the switch using its embedded management software, or via SNMP applications. To manage the switch, you can make a direct connection to the RS-232 console port (out-of-band), or you can manage the switch through a network 1-1 1 Introduction connection (in-band) using Telnet, the on-board Web agent, or Windows-based network management software. For a detailed description of the switch's advanced features, refer to the User Guide. Description of Hardware 10/100/1000BASE-T Ports These ports are RJ-45 ports that operate at 10 Mbps or 100 Mbps, half or full duplex, or at 1000 Mbps, full duplex. Because all ports on this switch support automatic MDI/ MDI-X operation, you can use straight-through cables for all network connections to PCs or servers, or to other switches or hubs. (See "1000BASE-T Pin Assignments" on page B-2.) Each of these ports support auto-negotiation, so the optimum transmission mode (half or full duplex), and data rate (10, 100, or 1000 Mbps) can be selected automatically. If a device connected to one of these ports does not support auto-negotiation, the communication mode of that port can be configured manually. Each port also supports auto-negotiation of flow control, so the switch can automatically prevent port buffers from becoming saturated. SFP Slots The Small Form Factor Pluggable (SFP) transceiver slots are shared with four of the RJ-45 ports (Ports 21~24). In its default configuration, if an SFP transceiver (purchased separately) is installed in a slot and has a valid link on its port, the associated RJ-45 port is disabled and cannot be used. The switch can also be configured to force the use of an RJ-45 port or SFP slot, as required. 1-2 Description of Hardware 1 Status LEDs The LEDs, which are located on the front panel for easy viewing, are shown below and described in the following table. Link/Act BPS SFP LEDs FDX Figure 1-2. Port LEDs Table 1-1. Port Status LEDs Port Status LEDs LED RJ-45 Ports Link/Act. On Green On Yellow Flashing Green Flashing Yellow FDX Green Off SFP Transceiver Slots (Ports 21-24) On Green Off An SFP transceiver port has established a valid 1000 Mbps network connection. The associated RJ-45 port is disabled. An SFP transceiver port has no valid link, or the link has failed. The associated RJ-45 port is enabled. Communications have been set to 1000 Mbps. Communications have been set to 10/100 Mbps. Traffic is passing through the port at 1000 Mbps. Traffic is passing through the port at 10/100 Mbps. Communications have been set to full duplex. Communications have been set to half duplex. Condition Status 1-3 1 Introduction Power Indicator Diagnostic Indicator BPS Redundant Power Indicator Figure 1-3. System LEDs Table 1-2. System Status LEDs System Status LEDs LED Power Diag Condition On Green Off Flashing Green On Green On Red BPS On Green Off Status Switch is receiving power. Power off or failure. System self-diagnostic test in progress. System self-diagnostic test successfully completed. System self-diagnostic test has failed. The Backup Power Supply is receiving power. The Backup Power Supply is off. 1-4 Features and Benefits 1 Optional Backup Power Supply The switch supports an optional Backup Power Supply (BPS), that can supply power to the switch in the event of failure of the internal power supply. Power Supply Receptacles There are two power receptacles on the rear panel of the switch. The standard power receptacle is for the AC power cord. The receptacle labeled "BPS" is for the optional Backup Power Supply. 100-240V~, 50-60Hz 2A BPS DC IN 12V 8.5A Figure 1-4. Power Supply Receptacle Features and Benefits Connectivity · 24 dual-speed ports for easy Gigabit Ethernet integration and for protection of your investment in legacy LAN equipment. · Auto-negotiation enables each RJ-45 port to automatically select the optimum communication mode (half or full duplex) if this feature is supported by the attached device; otherwise the port can be configured manually. · Independent RJ-45 10/100/1000BASE-T ports with auto MDI/MDI-X pinout selection. · Unshielded (UTP) cable supported on all RJ-45 ports: Category 3, 4 or 5 for 10 Mbps connections, Category 5 or 5e for 100 Mbps connections, and Category 5 or better for 1000 Mbps connections. · IEEE 802.3 Ethernet, 802.3u Fast Ethernet, 802.3z and 802.3ab Gigabit Ethernet compliance ensures compatibility with standards-based hubs, network cards and switches from any vendor. Expandability · Supports 1000BASE-SX and 1000BASE-LX SFP transceivers. Performance Transparent bridging Switching table with a total of 16K MAC address entries Provides store-and-forward switching Supports wire-speed switching Supports flow control, using back pressure for half duplex and IEEE 802.3x for full duplex · Broadcast storm control · Desktop or rack-mountable · · · · · 1-5 1 Introduction Management · "At-a-glance" LEDs for easy troubleshooting · Network management agent: · Manages switch in-band or out-of-band · Supports Telnet, SNMP/RMON and Web-based interface 1-6 Chapter 2: Network Planning Introduction to Switching A network switch allows simultaneous transmission of multiple packets via non-crossbar switching. This means that it can partition a network more efficiently than bridges or routers. The switch has, therefore, been recognized as one of the most important building blocks for today's networking technology. When performance bottlenecks are caused by congestion at the network access point (such as the network card for a high-volume file server), the device experiencing congestion (server, power user or hub) can be attached directly to a switched port. And, by using full-duplex mode, the bandwidth of the dedicated segment can be doubled to maximize throughput. When networks are based on repeater (hub) technology, the maximum distance between end stations is limited. For Ethernet, there may be up to four hubs between any pair of stations; for Fast Ethernet, the maximum is two. This is known as the hop count. However, a switch turns the hop count back to zero. So subdividing the network into smaller and more manageable segments, and linking them to the larger network by means of a switch, removes this limitation. A switch can be easily configured in any Ethernet or Fast Ethernet network to significantly boost bandwidth while using conventional cabling and network cards. 2-1 2 Network Planning Application Examples This Gigabit Ethernet Switch is not only designed to segment your network, but also to provide a wide range of options in setting up network connections and linking VLANs. Some typical applications are described below. Collapsed Backbone The Gigabit Ethernet Switch is an excellent choice for mixed Ethernet, Fast Ethernet, and Gigabit Ethernet installations where significant growth is expected in the near future. You can easily build on this basic configuration, adding direct full-duplex connections to workstations or servers. When the time comes for further expansion, just connect to another hub or switch using one of the Gigabit Ethernet ports built into the front panel or a Gigabit Ethernet port on a plug-in SFP transceiver. In the figure below, this switch is operating as a collapsed backbone for a small LAN. It is providing dedicated 10 Mbps full-duplex connections to workstations and 100 Mbps full-duplex connections to power users and 1 Gbps connections to servers. 1 3 5 7 9 11 13 15 17 19 21 23 OmniStack 6300-24 1000=Green 10/100=Yellow 21 1 3 5 7 9 11 13 15 17 19 21 23 Act Link/ FDX Power Diag BPS 22 23 24 Console 2 4 6 8 10 12 14 16 18 20 22 24 Act Link/ FDX 2 4 6 8 10 12 14 16 18 20 22 24 ... Servers 1 Gbps Full Duplex ... Workstations 100 Mbps Full Duplex ... Workstations 10 Mbps Full Duplex Figure 2-1. Collapsed Backbone 2-2 Application Examples 2 Network Aggregation Plan With 24 parallel bridging ports (i.e., 24 distinct collision domains), the Gigabit Ethernet Switch can collapse a complex network down into a single efficient bridged node, increasing overall bandwidth and throughput. In the figure below, the 10/100/1000BASE-T ports on the Gigabit Ethernet Switch are providing 1000 Mbps connectivity for up to 24 segments through stackable switches. In addition, the switch is also connecting several servers at 1000 Mbps. 1 3 5 7 9 11 13 15 17 19 21 23 OmniStack 6300-24 1000=Green 10/100=Yellow 21 1 3 5 7 9 11 13 15 17 19 21 23 Act Link/ FDX Power Diag BPS Console 22 23 24 2 4 6 8 10 12 14 16 18 20 22 24 Act Link/ FDX 2 4 6 8 10 12 14 16 18 20 22 24 Server Farm . . . 1 ES3526F . . . 1 ES3526F 1 ES3526F 1 ES3526F 10/100/1000 Mbps Segments ... ... Figure 2-2. Network Aggregation Plan 2-3 2 Network Planning Remote Connection with Fiber Cable Fiber optic technology allows for longer cabling than any other media type. A 1000BASE-SX (MMF) link can connect to a site up to 550 meters away, and a 1000BASE-LX (SMF) link can run up to 5 km. This allows the Gigabit Ethernet Switch to serve as a collapsed backbone, providing direct connectivity for a widespread LAN. A 1000BASE-SX SFP can be used for a high-speed connection between floors in the same building, and a 1000BASE-LX SFP can be used to connect to other buildings in a campus setting. The figure below illustrates this switch connecting multiple segments with fiber cable. Headquarters 1 3 5 7 9 11 13 15 17 19 21 23 OmniStack 6300-24 1000=Green 10/100=Yellow 21 1 3 5 7 9 11 13 15 17 19 21 23 Act Link/ FDX Power Diag BPS Console 22 23 24 2 4 6 8 10 12 14 16 18 20 22 24 Act Link/ FDX 2 4 6 8 10 12 14 16 18 20 22 24 Server Farm Remote Switch 25 26 1 2 3 4 5 6 13 14 15 16 17 18 Link Act Console Power 7 8 9 Self Test 10 11 12 Fan Status 19 20 21 22 23 24 Link Act 1000BASE-SX MMF (500 meters) 1000BASE-LX SMF (5 kilometers) Remote Switch 1 2 3 4 5 6 13 14 15 16 17 18 26 25 26 1 2 3 4 5 6 13 14 15 16 17 18 Link Act 25 1 25 26 2 3 4 5 6 13 14 15 16 17 18 Fault Reset Clear 7 8 9 10 11 12 19 20 21 22 23 24 Power Console 7 8 9 Self Test 10 11 12 Fan Status 19 20 21 22 23 24 Link Act Fault Reset Clear 7 8 9 10 11 12 19 20 21 22 23 24 10/100/1000 Mbps Segments ... ... Figure 2-3. Remote Connection with Fiber Cable 2-4 Application Examples 2 Making VLAN Connections VLANs can be based on port groups, or each data frame can be explicitly tagged to identify the VLAN group to which it belongs. When using port-based VLANs, ports can either be assigned to one specific group or to all groups. Port-based VLANs are suitable for small networks. A single switch can be easily configured to support several VLAN groups for various organizational entities (such as Finance and Marketing). When you expand port-based VLANs across several switches, you need to make a separate connection for each VLAN group. This approach is, however, inconsistent with the Spanning Tree Protocol, which can easily segregate ports that belong to the same VLAN. When VLANs cross separate switches, you need to use VLAN tagging. This allows you to assign multiple VLAN groups to the "trunk" ports (that is, tagged ports) connecting different switches.