Cabletron Systems STS16-20R, STS16-20D instruction

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RI/RO-Like Connection on SmartStack STS16-20R

A UTP RI/RO connection is available on ports 19 and 20 on the SmartStack STS16-20R Switch.

This feature allows the SmartStack STS16-20R to connect to CAU/LAM systems using the RI/RO connections thus providing a RI/RO-like functionality. This enables the switch to be easily installed in existing Token Ring networks.

A loop-back function has been implemented on these ports so that if the port is disabled or the switch is powered off there will not be a break in the attached main ring. This means that attaching a cable from the RI port of a MAU port to one of the two switch ports in effect joins the primary and the backup ring in a MAU/CAU main ring system. Connecting the other end of the RI/RO connection to the other switch port, creates redundant paths because the two switch ports are connected to the same segment. Therefore, the IEEE Spanning Tree Protocol (STP) must be enabled, which will place one port in forward and the other in blocked mode. If there is a break in the main ring, the STP will place both ports in forward mode, and all MACs on both segments will be relearned.

If a SmartStack STS16-20R port has been configured to RI/RO mode, it will automatically sense whether the port has been connected to RI or RO of the MAU.

Note: It is not possible to automatically verify whether a UTP/STP port has been connected according to the configuration. Any errors, such as attaching port 19 or 20 to a normal MAU port when the SmartStack STS16-20R port has been configured for RI/RO, will cause a complete disruption of the ring to which the port is attached. Therefore, be careful when using the RI/RO feature.

Switch Overview

SmartStack STS16-20D/STS16-20R Token Ring Switches Installation and User Guide

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Cabletron Systems STS16-20D manual RI/RO-Like Connection on SmartStack STS16-20R

Contents

Page Page Order Number 9032956-01 OC-7054 v .1 Industry Canada Notice FCC NoticeVcci Notice Application of Council Directives 89/336/EEC 73/23/EEC Declaration of Conformity AddendumIii Table of Contents Installation Preparing for Installation Switch Configuration Accessing Switch Management Vii Monitoring the Network from the Console StatisticsMenu 155 Monitoring the Network with Snmp 201 Troubleshooting 215Monitoring Port Traffic 211 Viii Getting in Touch with Technical Support 221 List of Figures List of Tables Xii Introduction SmartStack STS16-20D Token Ring Switch Switch of Switches Switching Technology Switch of Desktops Switch of ServersSwitch of Hubs Switch of Routers Switch of Floors and Buildings Token Ring Ports Front Panel DetailsManagement Port System Request Button Reset ButtonSwitched Port Analyzer State Meaning LabelsStatus and Activity LEDs Connection has been established to the stack Lists the stack-link LEDs and their meaningsLists the port LEDs and their meanings Token Ring port is inserted into the ring Lists the back panel connectors on the switch Back panel of the switches are illustratedBack Panel Details Name Description Performance and Advanced Features Features and SpecificationsFeatures Scalability and High Availability Management Installation Capacity Specifications Performance Performance Specifications Physical Characteristics Spanning Tree Protocol Specification Value Protocol compatibilitySupport On SmartStack STS16-20D only for Ports 17 to MIBs supported Switch Overview Multiple Simultaneous Conversations Low Latency Address Management SmartStack STS16-20D Token Ring SwitchSmartStack STS16-20R Token Ring Switch Multiple Bridging Modes Source Route Bridging SRB Source Route Switching SRS SRT/SRB Source Route Transparent SRT Congestion Control Filtering Cut-Through Three Switching ModesStore and Forward Auto Adaptive Cut-Through Token Ring Port Operation Modes RI/RO-Like Connection on SmartStack STS16-20R ClearSession Support Transmission Priority Queues CrossLink Connections Spanning Tree Protocol Support Vlan Vlan Support Example of Dynamic Source Route Recovery, Base Configuration Dynamic Source Route Recovery Example of Dynamic Source Route Recovery, Normal State Example of Dynamic Source Route Recovery, Switch 1 Failed Management Specification IBM LAN Network Manager SmartStack Manager for WindowsTelnet Management and VT100 Management Console Rmon Support Name Support Info Event Stackable Architecture Built-in Port CountersBack-to-Back Internal Stacker Optional Redundant Power Supply on SmartStack STS16-20R Safety with Electricity Preparing for InstallationSafety Recommendations Preventing Electrostatic Discharge Damage Power Chassis AccessibilitySite Requirements Environment Preparing for Installation Frame Length Limit Configuration Guidelines Ieee 802.1D Spanning Tree Ring Numbers Sample Uses of the SmartStack STS16-20RM Family Switches Typical Network without the SmartStack STS16-20D/STS16-20R Delivering Dedicated Bandwidth to Individual Workstations Deployment Scenarios Scenario using a Stacker Link and a Matrix Switch Setting Up CrossLinks Preparing for Installation Installation Summary Installation Package Contents Materials needed for Installation Rack or Cabinet Mounting Mounting the Chassis Table-Mounting Mounting the Switch in a Rack or Cabinet Cabling Connecting Devices to the Token Ring Ports Connecting Devices to Token Ring Ports Connecting using Building Wiring Checking the Installation Back panel of the STS16-20D Applying Power Back panel of the STS16-20R SmartStack STS-LM Front Panel Stacker Link Module Connecting the Stacker Link Cable SmartStack STS-LM Connectors and LEDsConnector Description State Description Inter-box Parameters Working with a Stack Menu Parameter Checking the InstallationSend Authentication Traps, changing the Trap table in any Switches can be configured in two ways Accessing Switch ManagementUsing the switch console Using Snmp based graphical management applications Connecting to the Management Port Using a Modem Connecting the ConsoleConnecting a Terminal Directly to the Management Port XON/XOFF Specification Value Communication Problems StkPort Diagnostic Screen Accessing Switch Management Switch Configuration General Guidelines These users have full access to all configuration parameters Navigating within the Menus Password Main Menu Configuration Menu Dram Installed Switch Configuration ScreenSystem Description Build Description Burned-in MAC Address Flash Memory InstalledConfigured MAC Address System Location Address FormatSystem Name System Contact Stack Configuration ScreenTime of Day Number of Boxes Module Information Screen Model StatusBoard ID HW Rev SmartStack STS16-20D/STS16-20R with four VLANs Vlan Configuration Vlan Configuration Menu Configuration → Vlan Configuration Vlan Configuration ScreenBrdg/Rng Return View Vlan Parameter Configuration for CRF ScreenAdd Change Vlan Name Bridging ModeParent Vlan State Vlan Parameter Configuration for BRF Screen LAA Vlan MAC Address Bridge Number802.1Q Vlan ID Configuration → Vlan Port Configuration Vlan Port ConfigurationPort Type Default Gateway IP Configuration ScreenInterface MAC Address IP Address Send Ping IP State BootP Requests and Parameters Spanning Tree Protocol Snmp Configuration Menu Ieee 802.1D Spanning Tree Protocol STP STP Participation Spanning Tree for BRF Screen Ieee STP Uses Bridge Functional Address 100Bridge Priority Bridge Hello Time in Seconds Spanning Tree for CRF Screen Bridge Forward Delay in Seconds101 CRF & Port Spanning Tree Parameters Switch Priority 102 STP Mode BRF-to-CRFSTP Priority STP Cost Switch Maximum Message Age in Seconds 103 Switch Hello Time in SecondsSwitch Forward Delay in Seconds Port Spanning Tree Parameters 104 Port Spanning Tree Parameters ScreenNumber of the port Priority Current Spanning Tree Information Screen STP Mode105 Path Cost To view more ports in the table Name Port Configuration Screen106 Media Type 107 EnabledCfg Loss Threshold Cfg Loss Sampling Interval Error High Threshold Forwarding ModeError Low Threshold Error Sampling Interval Operation Mode Duplex Mode109 Media Speed Max Explorer Rate on Input 110 Switched Port Analyzer Menu from the Configuration MenuCrossLink 111 112 CrossLink Menu CrossLink Configuration Screen Deletes all CrossLinks Setting up a CrossLink114 Clear Table 115 Current CrossLink Information ScreenWhether the specified CrossLink is active or not What ports are in that CrossLink 116 Address Filtering Configure Port Security Mode Configure FiltersFilters and Port Security Menu 117 118 Protocol Filters Configure Filters ScreenIndex MAC Address Exit Ports 119Applied Ports 120 Configure Port Security Mode ScreenSecurity. Then select Configure Port Security Mode 121 View Port Filters ScreenNumerical order of entries Description Protocol Filters Menu Port number Security Mode122 Security. Then select Protocol Filters 123 Protocol Class Assignment Protocol Class Assignment ScreenPort Filtering Attributes Class 124 Port Filtering Attributes ScreenDSAPs Block 125 None Allow all frames in this protocol class default value 126 Address AgingSet at the Port Address Table Aging menu Set at the Master Address Table Aging menu Port Address Table Aging Screen Address Aging Menu127 Then select Port Address Table Aging Port to which you want to assign an aging time 128 PortAging Time min Demand Aging Level Aging Time Master Address Table Aging Screen129 Password Menu 131 Password is saved across warm boots and power cycles Console/Telnet Sessions Console Configuration Menu Serial Link Configuration Screen Setting Value Creating a Console Session Using a ModemStopping the Console Session 134 Telnet Configuration Screen 136 Telnet Sessions ScreenBox Remote Stopping the Telnet Session Starting the Telnet SessionInvoluntary Termination of the Telnet Session 137 138 139 Syslog Daemon ScreenDisplays more information Deletes an entry Zoom 140 Change EntryModifies an existing entry Restrictions Dsrr Configuration141 Primary and Traced Dsrr Port 142 143 Dsrr Group Configuration ScreenBox, Port Group 144 State Dsrr Configuration ScreenView and Change Group Status Backup for Traced Port Backup for Primary PortGroup Priority Hello Time 146 ATM Address Boot BootstrapDownload/Upload Menu 147 148 Serial Link Download Screen Select Serial Link Download Select Main Image Download 149 150 Tftp Download/Upload ScreenDownload/Upload Tftp Server Address Execute name Download/Upload 151 Number of Resets Since Diagnostics Reset ScreenReset Switch With Diagnostics Reset Switch Without Diagnostics Clear Nonvolatile RAM 153 Reset Port Address TablePower-On Diagnostics 154 155 Monitoring the Network from the Console Statistics Menu 156 Statistics Menu Switch Statistics Screen Frames Lost 158 Error Frames ReceivedPending Send Requests Currently Active Stations 159 Power Supply Information Screen 160 Port Status ScreenIns Spd Fwd Mode 161 Oper Mode 162 Port Statistics Menu General Statistics Screen Frames Processed 164 MAC Frames ForwardedFrames Unknown Broadcast Frames Received 165 Address Chain Overflows Frame ErrorsAddress Table Overflows Receive Buffer Overflows Config Loss Reason Config LossLast Reset 166 Ring Number Mismatch Burst Errors Line ErrorsAC Errors Statistics Screen Internal Errors Abort Transmit ErrorsLost Frame Errors Frame Copied Errors Lobe Wires RecoveriesFrequency Errors 169 Transmit Beacons 170 State Information ScreenRing Status Ring State 171 Uptime When BeaconRing Speed Next Open Upstream Neighbor 172 DTR MAC Information MenuTXI Information Station-CPort Information TXI Information Screen Error Report Timer173 Authorized Function Classes Join State 174Monitor State Beacon Source Address Station-CPort Information Screen 176 Common Access Protocol MaskCPort Phantom Drive Mask Common Policy Flags 177 Address Tables Menu 178 Master Address Table ScreenMaster Address Table Address 179 180 Master Route Descriptor Table ScreenSearch Master Route Descriptor Table Unknown 181 Route hex Select Vlan Address Table Vlan Address Table Screen182 Select Vlan Route Descriptor Table Vlan Route Descriptor Table Screen183 First Vlan to which the MAC address is known Locate MAC Address Screen184 185 Current Spanning Tree Information ScreenBridge ID Root ID 186 Hello Time Forward DelayMax Message Age PId 187 Dsg SwId/BrId Designated Switch Id/Bridge IdDCst Designated Cost Dsg PId Designated Port Id Root Port Current Spanning Tree Information for a CRF Screen188 PId Port ID 189 Hello Time Dsg PId Designated Port Identifier 190 Dsg SwId/BrId Designated Bridge ID Vlan Statistics Screen for CRF Vlan Statistics191 Parent BRF 192 Ports Vlan Statistics for BRF ScreenList of ports that belong to this CRF Vlan Statistics Screen for BRF appears 193 Dsrr Status ScreensDsrr Status Tables Screen 194 Dsrr Neighbor Table ScreenNeighbor Last Seen Displays the next entry sorted by MAC Address Time Acting as Backup Dsrr Acting as Backup Table Screen195 Closes the screen and returns to the Dsrr Status menu 196 Diagnostic Test Results Screen Message Log Information Screen Message Content197 Log Clear 198 BackStart/End 199 Pressing ESC, you cancel and return to previous menuDisplay Summary Screen 200 Following sections describe the Snmp setup menus Snmp SetupMonitoring the Network with Snmp 201 Snmp Configuration Screen Snmp ConfigurationSend Authentication Traps Enable Rmon Statistics Community Strings Screen Configuration → Community Strings203 Snmp over MAC Community Strings Mode 204Community Name 205 Configuration → Trap ReceiversTrap Receivers Screen General traps List of Supported Traps from a STS16-20D/STS16-20R206 Add Entry Per Port Traps 207Enterprise specific traps from STS16.MIB Traps for CrossLinks 208Traps for the Spanning Tree Protocol 209 210 211 Monitoring Port TrafficActive Monitoring Passive Monitoring 212 213 Switched Port Analyzer ScreenAnalyzer Port Number Monitored Port Number 214 Obtaining Service TroubleshootingTroubleshooting in a Network Start of Troubleshooting Process Symptom and LED State Go To Choosing a Troubleshooting ProcedureProcedure a Procedure B 217 Procedure CProcedure D 218 219 220 221 Getting in Touch with Technical Support Switch Information Problem Report FormSwitch Configuration 222 223 Problem Description Network Installation Sketch 224 225 Appendix A. Abbreviations Mbps 226 TrCRF 227TrBRF 228 Cable Function Cable Type or Cable Solution Connecting to the Out-of-Band Management PortAppendix B. Cable and Pin Information Out-of-Band Management Port and Cable Pin-Outs 230 Management Port Pin-Out Pin Signal NameShell TIA/EIA-232 Modem Cable Connections 231 TIA/EIA-232 Null-Modem Cable for 25-pin Connector Twisted-Pair Cable Pin Outs Ohm IBM STP Data Connector-to-RJ-45 Straight-Through Cable232 Straight-Through 100-Ohm/120-Ohm Cable 233 Cabling RecommendationsCable Type Impedance Number Of Attaching Devices 234 If using any 4 Mbps only adapters or filtersRing Types Speed Ring Speed Ohm Type Ohm Category Mbps 350 m 1148 ft 200 m 656 ft Not Supported 90 m 295 ft 235Ring Speed 100 or 120 Ohm Category 236 Index-1 IndexNumerics 194 Index-2 Index-3 191 Index-4 Index-5 Index-6 Page 710001812