Enterasys Networks 2H252-25R Troubleshooting

Troubleshooting 4-1

Troubleshooting

This chapter provides information concerning the following:

•Using LANVIEW (Section 4.1)

•Troubleshooting Checklist (Section4.2)

•Using the RESET Button (Section 4.3)

4.1 USING LANVIEW

The 2H252-25R uses Enterasys Networks’ built-in visual diagnostic and status monitoring system

called LANVIEW. The LANVIEW LEDs (Figure4-1) allow quick observation of the network

status to aid in diagnosing network problems.

Contents

Main 2H252-25R SmartSwitch 2200 Installation Users Guide 9034005-03 2H252-25R FAST ETHERNET WORKGROUP SWITCH Page NOTICE Only qualified personnel should perform installation procedures. FCC NOTICE INDUSTRY CANADA NOTICE VCCI NOTICE CLASS A ITE NOTICE ENTERASYS NETWORKS, INC. PROGRAM LICENSE AGREEMENT Page DECLARATION OF CONFORMITY Page Contents ABOUT THIS GUIDE 1 2 3 4 INDEX A B Figures Page About This Guide USING THIS GUIDE STRUCTURE OF THIS GUIDE Important Notice RELATED DOCUMENTS DOCUMENT CONVENTIONS The guide uses the following conventions: Page Introduction 1-1 Introduction FAST ETHERNET WORKGROUP SWITCH Network Ports 1-24 2H252-25R 4005_00_01 1.1.1 Connectivity 1.1.2 Runtime IP Address Discovery 1.1.3 Full Duplex Switched Ethernet 1.1.4 SmartTrunk 1.1.5 Remote Monitoring (RMON) 1.1.6 Broadcast Suppression 1.1.7 Port/VLAN Redirect Functions 1.1.8 Rate Limiting 1.1.9 Flow Control 1.1.10 GARP Switch Operation 1.1.11 802.1 Port Priority 1.1.12 Management 1.1.13 Switching Options 1.1.14 Optional HSIMs and VHSIMs Page 1.2 GETTING HELP Network Requirements 2.1 SmartTrunk 2.2 10BASE-T NETWORK 2.3 100BASE-TX NETWORK Installation 3.1 UNPACKING THE DEVICE 3.2 INSTALLING OPTIONS 3.3 INSTALLING THE DEVICE 3.3.1 Tabletop or Shelf Installation Guidelines for Tabletop and Shelf Installations Installation 3-4 Installation 3.3.2 Rackmount Installation Guidelines for the Rackmount Installation A = 15 cm (6 in) B = 57 cm (22.5 in) C = 53 cm (21 in) C B A D D = 213 cm (7 ft) Installation Attaching the Strain-Relief Bracket 3-6 Installation Figure 3-2 Attaching the Strain-Relief Bracket FAST ETHERNET WORKGROUP SWITCH Rack Mounting the 2H252-25R CAUTION: Do not att empt to attach the rackmount brackets with screws other than the 6-32 x 1/4-inch flathead Strain-Relief Bracket Strain-Relief Bracket Screws Rackmount Bracket FAST ETHERNET WORKGROUP SWITCH Figure 3-4 Installing the Device in a Rack 2H252-25R Rackmount Bracket Screws 3.3.3 Connecting Power 3.4 CONNECTING TO THE NETWORK 3.4.1 Connecting Twisted Pair Cables to Fixed Ports Page Connecting to the Network Installation 3-11 Figure 3-7 Schematic of Straight-Through and Crossover Cables NOTE: RX+/RX and TX+/TX must share a common color pair. Straight-Through Cable Crossover Cable 3.5 COMPLETING THE INSTALLATION Troubleshooting 4.1 USING LANVIEW Using LANVIEW 4-2 Troubleshooting Figure 4-1 LANVIEW LEDs A B Page Page Page 4.2 TROUBLESHOOTING CHECKLIST Page Page 4.3 USING THE RESET BUTTON The RESET button shown in Figure4-2 resets and re-initializes the 2H252-25R. Page A Specifications A.2 PHYSICAL PROPERTIES A.1 DEVICE SPECIFICATIONS Page A.6 COM PORT PINOUT ASSIGNMENTS A.7 REGULATORY COMPLIANCE Page B Optional Installations and Mode Switch Bank Settings B.2 REMOVING THE CHASSIS COVER This section describes how to remove the 2H252-25R chassis cover. Page Page B.3 SETTING THE MODE SWITCHES Page B.4 SIMM UPGRADE B.4.1 Locating SIMMs B.4.2 Installing the DRAM SIMM B.5 INSTALLING OPTIONAL HSIM OR VHSIM INTERFACE MODULES Connectors Optional HSIM or VHSIM Page Index M N P R S