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                        ELS100-48tx2m.book  Page -i  Thursday, November 16, 2000  4:59 PM
VERTICAL HORIZON
VH-4802
FAST ETHERNET SWITCH
USER GUIDE
9033630                                                                                                                                                                                                                                                                                                                                                                                  
                    
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                        ELS100-48tx2m.book  Page 0  Thursday, November 16, 2000  4:59 PM                                                                                                                                                                                                                                                                                                                                                                                                                                                    
                    
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                        ELS100-48tx2m.book  Page i  Thursday, November 16, 2000  4:59 PM Notice Only qualified personnel should perform installation  procedures. NOTICE Enterasys Networks reserves the right to make changes in specifications and other information  contained in this document without prior notice. The reader should in all cases consult Enterasys  Networks to determine whether any such changes have been made. The hardware, firmware, or software described in this manual is subject to change without notice. 
                    
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                        ELS100-48tx2m.book  Page ii  Thursday, November 16, 2000  4:59 PM Notice FCC NOTICE This device complies with Part 15 of the FCC rules. Operation is subject to the following two  conditions: (1) this device may not cause harmful interference, and (2) this device must accept any  interference received, including interference that may cause undesired operation. NOTE: 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 rul
                    
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                        ELS100-48tx2m.book  Page iii  Thursday, November 16, 2000  4:59 PM Notice  21 CFR 1040.10 and 1040.11 U.S. Department of Health and Human Services (FDA).   IEC Publication 825 (International Electrotechnical Commission).   CENELEC EN 60825 (European Committee for Electrotechnical Standardization).  When operating within their performance limitations, laser transceiver output meets the Class 1   accessible emission limit of all three standards. Class 1 levels of laser radiation are not consid
                    
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                        ELS100-48tx2m.book  Page iv  Thursday, November 16, 2000  4:59 PM Notice SAFETY INFORMATION WICHTIGE SICHERHEITSHINWEISE (GERMANY) 1. Bitte lesen Sie diese Hinweise sorgfältig durch. 2. Heben Sie diese Anleitung für den späteren Gebrauch auf. 3. Vor jedem Reinigen ist das Gerät vom Stromnetz zu trennen. Verwenden Sie keine Flüssigoder  Aerosolreiniger.  Am besten eignet sich ein angefeuchtetes Tuch zur Reinigung. 4. Die Netzanschlu ßsteckdose soll nahe dem Gerät angebracht und leicht zugänglich 
                    
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                        ELS100-48tx2m.book  Page v  Thursday, November 16, 2000  4:59 PM Notice ENTERASYS NETWORKS, INC. PROGRAM LICENSE AGREEMENT BEFORE OPENING OR UTILIZING THE ENCLOSED PRODUCT, CAREFULLY READ THIS LICENSE AGREEMENT. This document is an agreement (“Agreement”) between You, the end user, and Enterasys Networks,  Inc. (“Enterasys”) that sets forth your rights and obligations with respect to the Enterasys software  program (“Program”) in the package. The Program may be contained in firmware, chips or ot
                    
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                        ELS100-48tx2m.book  Page vi  Thursday, November 16, 2000  4:59 PM Notice 5. UNITED STATES GOVERNMENT RESTRICTED RIGHTS. The enclosed Product (i) was  developed solely at private expense; (ii) contains “restricted computer software” submitted with  restricted rights in accordance with section 52.227-19 (a) through (d) of the Commercial Computer  Software-Restricted Rights Clause and its successors, and (iii) in all respects is proprietary data  belonging to Enterasys and/or its suppliers. For Dep
                    
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                        ELS100-48tx2m.book  Page vii  Thursday, November 16, 2000  4:59 PM Notice DECLARATION OF CONFORMITY Application of Council Directive(s): 89/336/EEC 73/23/EEC Manufacturer’s Name: Enterasys Networks, Inc. Manufacturer’s Address: 35 Industrial Way PO Box 5005 Rochester, NH 03867 European Representative Name: Mr. J. Sims European Representative Address: Enterasys Networks Limited Nexus House, Newbury Business Park London Road, Newbury Berkshire RG14 2PZ, England Conformance to Directive(s)/Product 
                    
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                        ELS100-48tx2m.book  Page viii  Thursday, November 16, 2000  4:59 PM Notice viii 9033630                                                                                                                                                                                                                                                                                                                                                                                                                             
                    
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                        ELS100-48tx2m.book  Page ix  Thursday, November 16, 2000  4:59 PM TABLE OF CONTENTS PREFACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . XI Purpose. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xi Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xi Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
                    
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                        ELS100-48tx2m.book  Page x  Thursday, November 16, 2000  4:59 PM Remote Management via the Console Port . . . . . . . . . . . . . . . . . 22 In-Band Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Powering the Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Network Cable Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Copper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
                    
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                        ELS100-48tx2m.book  Page xi  Thursday, November 16, 2000  4:59 PM PREFACE Purpose This guide provides information about the features and applications of the  Enterasys Networks Vertical Horizon VH-4802 switch system. Audience This guide is intended for Ethernet Local Area Network (LAN)  administrators and Management Information Systems (MIS) personnel  with the following background:  Working knowledge of Ethernet LANs  Familiarity with Transmission Control Protocol/Internet Protocol  (TCP/IP) 
                    
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                        ELS100-48tx2m.book  Page xii  Thursday, November 16, 2000  4:59 PM Other Conventions This guide uses the following typographical conventions:  Initial Caps Menu titles and console menu selections.  [Enter] Used to designate the Enter or Return key.  courier font Screen messages and user prompts.  Selection Describes a user-configurable user interface item.  Field Describes a read-only information item. Organization Chapter 1. Product Overview: Describes the features of the switch, front  an
                    
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                        ELS100-48tx2m.book  Page 1  Thursday, November 16, 2000  4:59 PM 1. PRODUCT OVERVIEW This chapter provides the following information:  Product Description  Features  Front and Rear Panel Component Descriptions  Feature Summaries  Application Example Description This installation guide describes Enterasys Networks’ Vertical Horizon  VH-4802 Fast Ethernet switch. The switch provides 48  10Base-T/100Base-TX ports, plus two slots for optional slide-in  100Base-FX, 1000Base-SX or 1000Base-LX mod
                    
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                        ELS100-48tx2m.book  Page 2  Thursday, November 16, 2000  4:59 PM The VH-4802 switch is desktop or rack-mountable. LEDs on the front  panel provide information about the operating status of the switch. The  rear panel contains the power connector, redundant power connector,  serial console port, and two slots for the optional modules. The side panel  includes two fans that maintain ventilation and cooling for internal switch  components.  Features  Ports:  - 48 dual-speed 10Base-T/100Base-TX por
                    
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                        ELS100-48tx2m.book  Page 3  Thursday, November 16, 2000  4:59 PM  Network Management: - SNMP compliant agent: MIB II (RFC 1213); Bridge MIB (RFC  1493); Ethernet-like MIB (RFC 1643); RMON - Statistics,  History, Alarm and Event groups (RFC 1757); Interface  Evolution MIB (RFC 1573); Q-MIB (IEEE 802.1Q); private MIB  extensions - Access via in-band, Internet browser, or Telnet  - Console port (RS-232, male DB-9 connector, null modem)  supports access via direct or modem connection - BootP for IP
                    
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                        ELS100-48tx2m.book  Page 4  Thursday, November 16, 2000  4:59 PM Front Panel Figure 1-1 shows the front panel of the Enterasys Networks Vertical  Horizon VH-4802. Table 1-1 defines the VH-4802 front panel  components.  Figure 1-1.  VH-4802 Front Panel Table 1-1.  Front Panel Components Name Function Power LED Lights steady green to indicate power is supplied to the  switch. Off indicates no power is supplied to the switch. RDP LED Lights steady to indicate that a redundant power unit is  attache
                    
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                        ELS100-48tx2m.book  Page 5  Thursday, November 16, 2000  4:59 PM Optional Modules Figure 1-2 shows the optional modules available for the Enterasys  Networks Vertical Horizon VH-4802. Table 1-2 defines the optional  module components.    Figure 1-2.  Optional Modules Table 1-2.  Optional Module Components Module Components 100Base-FX (MMF) Ports: Two multi-mode fiber ports using SC connectors  for uplink. (See 100Base-FX/1000Base-SX/LX Fiber  Ports on page 26 for a detailed description.) 100Base
                    
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                        ELS100-48tx2m.book  Page 6  Thursday, November 16, 2000  4:59 PM Rear Panel Figure 1-3 shows the VH-4802 rear panel and Table 1-3 defines the rear  panel components.  Figure 1-3.  VH-4802 Rear Panel Table 1-3.  Rear Panel Components Name Function Power Connector Provides AC power to the switch. Redundant Power This connector is provided for the option of adding an  Connector additional DC redundant power unit (RPU) which can  supply power to the switch if its primary power supply  fails. (Refer