Cabletron Systems ELS100

82 Flow Control ELS100-24TX

The pause frame flow control mechani sm supported by the ELS100 -24TX

switch conforms with the IEEE 802.3x specification for full duplex flow

control.

The ELS100-24TX Port Statistics Screen indicates the number of pause

frames that have been sent, indicat ing the num ber of times ful l duplex flo w

control has occurred. For the full duplex pa use fram e mechanism to work,

the device connected to the switch port must also support IEEE 802.3x

flow control. Flow Co ntrol is configurab le per port in the Por t Configuration

Menu of the console menu or via SNMP.

Contents

Main NOTICE FCC NOTICE DOC NOTICE VCCI NOTICE CABLETRON SYSTEMS, INC. PROGRAM LICENSE AGREEMENT CABLETRON SOFTWARE PROGRAM LICENSE EXCLUSION OF WARRANTY AND DISCLAIMER OF LIABILITY UNITED STATES GOVERNMENT RESTRICTED RIGHTS SAFETY INFORMATION LASER RADIATION AND CONNECTORS DECLARATION OF CONFORMITY Page TABLE OF CONTENTS Page Page Page PREFACE Purpose Audience Conventions Page Organization Getting Help 1. PRODUCT OVERVIEW Description Features Page Front Panel 4 Product Overview ELS100-24TX Figure 1-2. Port LEDs Default Configuration Figure 1-3. Port LEDs LED Mode Button Pressed The numbers above and below the port LEDs identify the LEDs associated with a specific RJ-45 port. Rear Panel Feature Summaries IEEE 802.1D Bridge Spanning Tree Protocol Frame Buffering and Frame Latency Software Download Non-volatile Parameter Storage Configuration and Management Interfac es RMON Port Mirroring Auto-negotiation Broadcast Throttling BootP/DHCP LEDs Full Duplex Mode Flow Control Application Examples Page Page 2. INSTALLATION Inspecting Your Shipment Site Requirements Page Mounting the Switch on a Wall Mounting the Switch in a Rack Connecting a Terminal to the Console Port Powering the Switch Power-Up Page Connecting Network Cables 3. ELS100-24TX USER INTERFACE Overview User Access Factory Defaults 24 ELS100-24TX User Interface ELS100-24TX Menu Hierarchy Figure 3-2 shows the ELS100-24TX switch user interface menu hierarchy. Figure 3-2. ELS100-24TX User Interface Menu Hierarchy Main Menu Figure 3-3. Main Menu System Configuration Menu Figure 3-4. System Configuration Menu SNMP Configuration Menu Figure 3-5. SNMP Configuration Menu Switch Configuration Menu Figure 3-6. Switch Configuration Menu Forwarding Table Configuration Menu Forwarding Table Configuration Menu (continued) Spanning Tree Configuration Menu Spanning Tree Configuration Menu (continued) Spanning Tree Port Configuration Menu Figure 3-9. Spanning Tree Port Configuration Menu Spanning Tree Port #n Configuration Menu VLAN Configuration Menu VLAN Menu VLAN #n Configuration Menu VLAN Port Menu Figure 3-14. VLAN Port Configuration Menu Class of Service Configuration Menu Port Priority Menu Figure 3-16. Port Priority Configuration Menu Port Menu Figure 3-17. Port Menu Port Configuration Menu Figure 3-18. Port Configuration Menu Switch Statistics Screen Figure 3-19. Switch Statistics Screen Switch Summary Screen Port Statistics Screen Figure 3-21. Port Statistics Screen continued on next page Figure 3-21 Port Statistics Screen (continued) General Information Screen Download Software Menu Save Current Configuration Return to Default Configuration Logout Reset 4. CONFIGURING & MONITORING THE SWITCH Common Tasks Setting Password Protection Assigning an IP Address Checking Network Configuration Status Connecting via Telnet Setting SNMP Management Access Viewing Switch Statistics Configuring Port Mirroring Downloading a Software Upgrade Downloading Via the Serial Port Downloading Via TFTP Configuring Spanning Tree Parameters Configuring VLANs Configuring Class of Service Configuring Port Operation Configuring the Forwarding Table Configuring Broadcast Throttling Setting a Default Gateway Configuring BootP/DHCP Page 5. SNMP MANAGEMENT The SNMP Protocol MIB Objects RFC 1213 (MIB-II) Page Cabletron Proprietary MIB Extensions Table 5-2. Switch Information Variables continued on next page Table 5-2 Switch Information Variables (continued) Compiling MIB Extensions: Cabletron Websit e http://www.cabletron.com Page APPENDIX A. TECHNICAL SPECIFICATIONS General Standards Compliance Certification Data Rate Page Port Specifications Console Port 10Base-T and 100Base-TX Ports Page Power Cord Set Requirements Note 1 Note 2 Note 3 APPENDIX B. SPANNING TREE CONCEPTS General Spanning Tree Features Spanning Tree Protocol in a Network Spanning Tree Protocol Parameters Table B-1. Spanning Tree Protocol Defaults Spanning Tree Protocol Operation Page APPENDIX C. FLOW CONTROL Page APPENDIX D. VIRTUAL LANS (VLANS) VLANs and Frame Tagging ELS100-24TX VLAN Configuration VLAN ID Ports in VLAN VLAN Egress Ports VLAN Access Ports VLAN Hybrid Ports Page VLAN Application Example APPENDIX E. CLASS OF SERVICE Page APPENDIX F. ACRONYMS & ABBREVIATIONS Page INDEX A B C D L M N P R T U V W