Nortel Networks 2500 Series specs

228System conﬁguration using the CLI

Figure 83

show lldp port rx-stats command output

Figure 84 "show lldp port tx-stats command output" (page 228) displays the output from the show lldp tx-stats command.

Figure 84

show lldp port tx-stats command output

Figure 85 "show lldp port tx-tlv command output" (page 229) displays the output from the show lldp stats command.

Nortel Ethernet Routing Switch 2500 Series

Overview — System Conﬁguration

NN47215-500 (323162-B) 02.02 Standard

4.1 19 November 2007

Copyright © 2007, Nortel Networks

Image 228

Nortel Networks 2500 Series manual Show lldp port rx-stats command output, Show lldp port tx-stats command output

Contents

Overview System Conﬁguration Trademarks Restricted rights legendStatement of conditions Nortel Networks software license agreement GeneralPage Contents System conﬁguration software features Getting Started with Device Manager 101 Using the Web-based management interface 145 System conﬁguration using the CLI 177 Copyright 2007, Nortel Networks Ethernet port management using the CLI 233 Conﬁguring ports using Device Manager 303 Troubleshooting 337 Contents Features Conﬁguring daylight savings time using the device managerNew in this release Other changes New in this release Introduction Before you beginText conventions This guide uses the following text conventions Introduction Bold body text Related publications Protocols menu How to get help Getting help over the phone from a Nortel Solutions CenterGetting help from the Nortel web site Getting help through a Nortel distributor or reseller How to get help Introduction Ethernet Routing Switch 2500 Series hardware Front panel Ethernet Routing Switch 2550T-PWR Ethernet Routing Switch 2526T front panel Console port SFP Gbic Support on the Ethernet Routing Switch 2500 Series Port connectorsGigabit Interface Converter Auto-MDI/MDI-X LED display panel PWR Back panel Kensington lockLabel Type Color State Meaning AC power receptacle Cooling fans Country/Plug Specifications Typical plug Description Read immediatelyBitte sofort lesen Lisez ceci immédiatement Leggere attentamenteSírvase leer inmediatamente Avertissement Small ofﬁce desktop switch application Network conﬁguration examples Branch ofﬁce workgroup switch application Ethernet Routing Switch 2500 Series used as a desktop switch Medium sized ofﬁce wiring closet switch application Conﬁguring power workgroups and a wiring closet switch Conﬁguring power workgroups and a wiring closet switch Ethernet Routing Switch 2500 Series hardware Nortel Ethernet Routing Switch 2500 Series stacking Stacking capabilities Stack enabled switches Stacking functionality deliveryStandalone conﬁguration with license ﬁles Working with license ﬁles using the CLI Syntax for the copy tftp license command is Copying the license ﬁle using the Java Device Manager Show license all command output Step Action Following table describes the ﬁelds on the License Download License DownloadLicense Download page ﬁelds Fields Description To set up a stack, do the following Stack conﬁguration Conﬁguring the operational mode on rear ports using the CLI Rear-ports mode commandShow rear-ports mode command Rear-ports mode command Show rear-ports mode command Unit Select switch Show rear-ports mode command outputRear ports and stacking Rear panel components Connecting stack cables Cascade Down portCascade Up port Initial stack installation Stack MAC addressStack conﬁgurations Base Unit Cascade Cable Cascade Cable used for return Cascade down stack conﬁguration Temporary base unit Regardless of stack conﬁguration, the following appliesCascade up stack conﬁguration Redundant cascade stacking Removing a stack unit Adding/Replacing a stack unitRedundant cascade stacking Auto Unit Replacement AUR function CFG mirror image process CFG mirror process in stack CFG mirror images in the stack after adding unit CFG mirror images after removing unit Restoring a CFG image CFG mirror images in the stack after removing the BU unit Step Action Conﬁguring AUR using the CLI Show stack auto-unit-replacement commandSyntax for this command is Synchronizing the CFG mirror images with CFG images Stack auto-unit-replacement enable command No stack auto-unit-replacement enable commandDefault stack auto-unit-replacement enable command Conﬁguring AUR using Device Manager Displaying unit stack uptime Nortel Ethernet Routing Switch 2500 Series stacking System conﬁguration software features Switch management featuresConﬁguration and switch management Console port settings Switch bannerUser name and password Login banner Login screen Logging Autosave feature Using Sntp Setting local time zone Using DNS to ping and TelnetConﬁguring with CLI BootP automatic IP conﬁguration/MAC address Choosing a BootP request mode BootP or Default IP BootP AlwaysBootP or Last Address BootP or Default IP BootP Always BootP or Last Address BootP Disabled BootP or Last AddressDefault BootP setting Flash memory storage Switch software image storage Conﬁguration File Download/Upload RequirementsBinary conﬁguration ﬁle Ascii conﬁguration ﬁle Autotopology Link Layer Discovery Protocol Ieee 802.1ab Lldp operational modes Connectivity and management informationHow Lldp works System conﬁguration software features Ethernet port management features Conﬁguring Lldp using the CLIAutosensing and autonegotiation Custom Autonegotiation Advertisements Symmetric mode High speed ﬂow control Other features Asymmetric modeRate Limiting Conﬁguration RFCs Standards CLI Basics CLI command modes Command mode prompts and entrance/exit commands CLI command mode hierarchy Interface FastEthern Port numbering in Standalone Mode Port numbering Accessing CLI Ethernet Routing Switch 2500 Series bannerPress Ctrl+Y, and the CLI prompt appears Setting the system username and password Getting helpBasic navigation General navigation commands End command Exit command Reload command Shutdown commandKeystroke navigation Help command No command Default commandLogout command Help command output Enable command Conﬁgure commandInterface command Conﬁgure command parameters and variables Disable command End commandExit command Syntax for the end command is Reload command Exit command has no parameters or variables Shutdown command Shutdown command parameters and variables Show sys-info command Show sys-info command Show tech commandManaging basic system information Parameters Description Variables Show tech command Show sys-info command outputShow tech command output Show mac-address-table command Managing MAC address forwarding database table Mac-address-table aging-time command Default mac-address-table aging-time commandShow mac-address-table command output CLI Basics Installing Device Manager Installing Device Manager Device Manager basicsGetting Started with Device Manager JDM installation precautions Installing the Device Manager softwareInstalling JDM on Windows Installing JDM on Windows Installing JDM on Unix or Linux Windows minimum requirements Removing previous versions of JDM on Windows Installing JDM on Windows from the CD Installing JDM on Windows from the webTo access the JDM software from the installation CD Executing the JDM installation software on Windows InstallAnywhere Introduction dialog box Choose Install Set dialog box Click NextLicense Agreement dialog box Feature Sets dialog box Choose Install Folder dialog box Click Next Choose Shortcut Folder dialog box appearsChoose Shortcut Folder dialog box Pre-Installation Summary dialog box Installing JDM on Unix or Linux Install Complete dialog box Installing JDM on Solaris from the CD Installing JDM on Linux from the CDMinimum requirements Installing JDM on Unix or Linux from the web Executing the JDM installation software on Unix or Linux Click Next Choose Install Set dialog box appears Do one of the following Feature Sets dialog box Pre-Installation Summary dialog box appears Installing Java Device Manager dialog box Removing JDM in Unix or Linux environments Device Manager basics Starting Device Manager Setting the Device Manager properties Device Manager window Default Properties dialog box Type information and select check boxes Click OKFollowing table describes the Properties dialog box ﬁelds Properties dialog box ﬁelds Area Area Field Description PollingWeb Management Application Control To display the device view, use the following procedure Opening a deviceApplication Launch Telnet From JDM Press Ctrl+O Open Device dialog box appears Following table describes the Open Device dialog box ﬁelds Click Open Field Description SNMPv3 Device Manager window Device viewParts of the Device Manager window Use the menu bar to set up and operate the Device Manager Menu bar commands page 127 describes the Menu Bar commandsMenu bar Toolbar Device view Selecting objectsToolbar buttons Button Name Description Menu bar equivalent Selecting a single object Selecting multiple objectsViewing information about a Gbic port To select a single object LEDs and ports Interface tab Switch unit shortcut menu Shortcut menusPort color codes Color Description Color port legend Switch unit shortcut menu command Command Description Port shortcut menu commands Command DescriptionPort shortcut menu Using the buttons in Device Manager dialog boxes Editing objectsStatus bar Device Manager buttons Button Name Description Working with statistics and graphs Types of statisticsTypes of statistics Statistic Description Types of graphs Statistic DescriptionLine graph Area graph Bar graph Statistics for single and multiple objects Pie graphInterface statistics for a single port Viewing statistics as graphs Types of statistics Viewing statistics as graphsInterface statistics for multiple ports Statistics dialog box for a port Telnet session Opening an SSH connection to the deviceGraph dialog box buttons Button Name Description Opening the web-based management home Trap log Web-based management home Help ﬁle locations Platform Default path Online Help Getting Started with Device Manager Using the Web-based management interface Requirements Logging in to the web-based management interface Web-based management interface home Menu MenuMain headings and options Main menu titles Option Main menu titles Option Adac Management Menu icons Button or icon Description Console Viewing stack information To view stack informationIcons Name Description Stack Information Stack Information screen ﬁelds Section Fields Description Switch Information Switch Information page ﬁelds DescriptionViewing summary information Section Fields Description Changing stack numbering To view or renumber devices within the stack frameworkStack Numbering Identifying unit numbers Stack Numbering screen ﬁelds Field Range Description Identifying Unit Numbers 157 Diagnosing and correcting PoE problems Conﬁguring PoE switch parameters using the CLIPoe poe-pd-detect-type command Status codes on PoE ports Poe poe-power-usage-threshold command Legacy Conﬁguring PoE port parameters using the CLI Poe poe-trap commandNo poe-trap command No poe-shutdown command No poe-shutdown command Poe poe-shutdown commandNo poe-shutdown command parameters and variables Poe poe-priority command Poe poe-shutdown command parameters and variablesSyntax for the poe poe-prioritycommand is Poe poe-priority command parameters and variables Poe poe-limit command Poe poe-limit command parameters and variablesSets the port priority as Displaying PoE conﬁguration using the CLI Show poe-main-status command Show poe-port-status command Show poe-port-status command parameters and variables Show poe-power-measurement command Show poe-port-status command outputEnter the ports for which you want to display Status Conﬁguring PoE using web-based management Displaying and conﬁguring power management for the switchPower measurements Show poe-power-measurement command output Displaying and conﬁguring power management for the switch Displaying and conﬁguring power management for the portsGlobal Power Management Global Power Management page items Description End Displaying and conﬁguring power management for the ports Port Property page appears Port PropertyFollowing table describes the items on the Port Property Port Property Description PoE tab for a single unit Edit Unit dialog box-PoE tab for a single unit PoE tab items for a single unit Description Device Manager display for PoE ports ERS 2550T-PWR with PoE ports PoE tab for ports Color DescriptionEdit Port dialog box- PoE tab PoE tab items PoE tab items page 176 describes the PoE tab itemsPoE tab items Description System conﬁguration using the CLI IP notation Ip address command Ip address command parameters and variablesAssigning and clearing IP addresses Default ip address command No ip address commandDefault ip netmask command No ip netmask command Ip default-gateway command No ip default-gateway commandIp default-gateway command parameters and variables Default ip default-gateway command Show ip command Show ip address command Show ip address command parameters and variablesShow ip command output Show ip address command output Ping command Ping command is executed in the User Exec command modePinging Resetting the switch to default conﬁguration Using DNS to ping and telnetShow ip dns command Ping command Ip name-server command Ping command responses Show ip dns command Show ip dns command output Ip name-server command There is no default value for this command No ip name-server command Ip domain-name commandIp name-server command parameters and variables No ip name-server command parameters and variables No ip domain-name command Default ip domain-name commandConﬁgure network command Conﬁguration Management Conﬁgure network command Show conﬁg-network commandConfigure network command is executed in the User Exec mode Conﬁgure network command parameters and variables Show conﬁg-network command Show running-conﬁg command Show running-conﬁg command Copy running-conﬁg tftp commandShow conﬁg-network command output Ascii Conﬁguration Generator Copy running-conﬁg tftp command Show running-conﬁg command output Setting the terminal Show terminal commandTerminal command Show terminal command Terminal command Show cli command Terminal command is executed in the User Exec modeTerminal command parameters and variables Show cli command is executed in the User Exec command mode Syntax for the show sys-infocommand is Show cli command outputDisplaying system information Setting boot parameters Boot commandIp bootp server command Ip bootp server command parameters and variables No ip bootp server command Default ip bootp server commandSetting Tftp parameters Show tftp-server command Tftp-server commandCopy conﬁg tftp command Copy tftp conﬁg command Tftp-server command parameters and variables No tftp-server command Default tftp-server commandCopy conﬁg tftp command Copy conﬁg tftp command parameters and variables Copy tftp conﬁg command Copy tftp conﬁg command parameters and variablesCustomizing the opening banner Banner command for displaying banner Show banner commandShow banner command parameters and variables Describes the parameters for the banner command No banner command Show interfaces commandShow interfaces command Show interfaces conﬁg command Displaying the ARP table Show interfaces command parameters and variables Show interfaces names command outputShow interfaces command output Show interfaces conﬁg command Show interfaces verbose command output Copy conﬁg nvram command Write memory commandShow interfaces conﬁg command output Saving the conﬁguration to Nvram Save conﬁg command Show autosave commandEnabling and disabling autosave Autosave enable command No autosave enable commandDefault autosave enable command Show autosave command has no parameters or variables Show sntp command Sntp enable command No sntp enable commandSntp server primary address command Show sntp command output Sntp server secondary address command No sntp server commandDefault is No sntp server command parameters and variables Sntp sync-now command Sntp sync-interval commandSyntax for the sntp sync-nowcommand is Sntp sync-interval command parameters and variables Setting local time zone Default sntp commandDefault sntp command parameters and variables Clock time-zone No clock time-zone Clock summer-time Clock time-zone command parameters and variables Clock time-zoneNo clock time-zone Clock summer-time Clock summer-time command parameters and variables No clock summer-timeShow clock time-zone Autotopology command No autotopology command Enabling AutopologyShow clock summer-time Show clock time-zone output Autotopology command No autotopology commandDefault autotopology command Show autotopology settings Conﬁguring Lldp using the CLI Show autotopology settings command outputShow autotopology nmm-table command output Show autotopology nmm-table Lldp command 32768 Default lldp command Lldp conﬁg-notiﬁcation commandDefault lldp command parameters and variables Lldp conﬁg-notiﬁcation command parameters and variables No lldp conﬁg-notiﬁcation command Default lldp conﬁg-notiﬁcation commandSpecifies the ports affected by the command Lldp tx-tlv command No lldp tx-tlv commandLldp tx-tlv command parameters and variables No lldp tx-tlv command parameters and variables Default lldp tx-tlv command Lldp status commandDefault lldp tx-tlv command parameters and variables No lldp status command Default lldp status commandLldp status command parameters and variables No lldp status command parameters and variables Show lldp command Default lldp status command parameters and variablesShow lldp command is executed in the User Exec command mode Show lldp command parameters and variables Show lldp local-sys-data command output Show lldp mgmt-sys-data command output Show lldp port command Show lldp port command parameters and variablesShow lldp stats command output Show lldp port neighbor command output Show lldp port neighbor-mgmt-addr command output Show lldp port rx-stats command output Show lldp port tx-stats command output Show lldp port tx-tlv command output Conﬁguring LEDs to blink on the display panelUpgrading software Download command Download commandSyntax for the download command is Download command parameters and variables Download message System conﬁguration using the CLI Ethernet port management using Shutdown command for the portShutdown command for the port No shutdown command Shutdown port command parameters and variables No shutdown command No shutdown command parameters and variablesShutdown port command output Name command Name command No name command Default name commandNaming ports No name command Default name commandNo name command parameters and variables Default name command parameters and variables Setting port speed Speed command Default speed command Default speed command parameters and variables Duplex command Default duplex command ﬂowcontrol command Default duplex command parameters and variablesﬂowcontrol command parameters and variables Enabling ﬂow control No ﬂowcontrol command No ﬂowcontrol command parameters and variables Default ﬂowcontrol command Default ﬂowconrtol command parameters and variablesEnabling rate-limiting Show rate-limit command Rate-limit commandRate-limit command parameters and variables Show rate-limit command output No rate-limit command Default rate-limit commandEnabling Custom Autonegotiation Advertisements Cana Show auto-negotiation-advertisements command Show auto-negotiation-capabilities commandShow auto-negotiation-advertisements command output Enter ports for which you want the current Auto-negotiation-advertisements command No auto-negotiation-advertisements command Default auto-negotiation-advertisements command Enter ports for which you want to set default Conﬁguring the switch using Device Manager Viewing Unit information To open the Rate Limit tab, use the following procedure Unit tabRate Limit tab To open the Unit tab Following table describes the Rate Limit tab ﬁelds Rate Limit tabRate Limit tab ﬁelds Field Description Following table describes the Rear Port Mode tab items Rear Ports Mode tabRearPortOperMode Viewing switch IP information To open the Globals tab, use the following procedureGlobals tab Following table describes the Globals tab ﬁelds Addresses tab Following table describes the Address tab ﬁeldsGlobals tab ﬁelds Field and MIB Description Association Edit IP dialog box IP Address tab ARP tab Following table describes the ARP tab ﬁeldsEdit IP dialog box ARP tab ARP tab ﬁelds Field Description TCP tab Following table describes the TCP tab ﬁeldsTCP tab TCP tab ﬁelds Field Description TCP Connections tab UDP Listeners tabTCP Connections tab ﬁelds Field Description Editing the chassis conﬁguration UDP Listeners tab ﬁelds Field Description System tab Edit Chassis dialog box System tab Following table describes the System tab ﬁelds System tab ﬁelds Field Description Base Unit Info tab Following table describes the Base Unit Info tab ﬁelds Base Unit Info tab ﬁelds Field Description Value is 4th flr wiring closet in blg a Stack Info tabEdit Chassis screen-Stack Info tab Stack Info tab ﬁelds Field Description 264 Conﬁguring the switch using Device Manager Agent tab Following table describes the Agent tab ﬁelds Edit Chassis dialog box Agent tabAgent tab ﬁelds Field Description PowerSupply tab Following table describes the PowerSupply tab ﬁeldsEdit Chassis dialog box PowerSupply tab Power Supply tab ﬁelds Field Description Fan tab Following table describes the Fan tab ﬁeldsEdit Chassis dialog box Fan tab Banner tab Edit Chassis dialog box Banner tab To set the default banner, use the following procedure To disable the bannerTo check that the banner is disabled Telnet window with default banner To create a Custom Banner, use the following procedure Custom Banner tabEdit Chassis dialog box Custom Banner tab Working with conﬁguration ﬁles FileSystem dialog boxFileSystem Conﬁg/Image/Diag ﬁle dialog box ﬁelds FileSystem Conﬁg/Image/Diag File tab dialog box Ascii conﬁg ﬁle Save Conﬁguration tab File system Ascii Conﬁg File dialog boxAscii Conﬁg File tab ﬁelds Field Description Following table describes the Save Conﬁguration tab ﬁelds Save Conﬁg tabSave Conﬁguration tab ﬁelds Field Description Working with Sntp Conﬁguring SntpSNTPClock dialog box Following table describes the Sntp dialog box ﬁelds SNTPClock dialog box ﬁelds Field Description Conﬁguring local time zone using the device manager Conﬁguring daylight savings time using the device manager Displaying topology information using Device Manager To view topology information, use the following procedureTopology tab Topology tab Topology Table tab Diagnostics dialog box Topology tab Topology Table tabTopology tab ﬁelds Field Description Conﬁguring Lldp using Device Manager Diagnostics dialog box Topology Table tabFollowing table describes the Topology Table tab ﬁelds Lldp Globals tab Lldp Globals tab Lldp dialog box appears with the Globals tab displayedLldp Globals tab Lldp Globals tab ﬁelds Field Description 284 Conﬁguring the switch using Device Manager Port tab Click the Port tab. The Port tab appears Following table describes the Port tab ﬁeldsPort tab ﬁelds Field Description TX Stats tab Graphing Lldp transmit statistics Following table describes the TX Stats tab ﬁeldsTX Stats tab TX Stats tab ﬁelds Field Description RX Stats tab Following table describes the RX Stats tab ﬁeldsRX Stats tab ﬁelds Field Description 290 Conﬁguring the switch using Device Manager Graphing Lldp receive statistics Local System tabLocal System tab appears Local Port tab Following table describes the Local System tab ﬁeldsLocal System tab Local System tab ﬁelds Field Description Following table describes the Local Port tab ﬁelds Local Port tab ﬁelds Field Description Local Management tab Following table describes the Local Management tab ﬁeldsLocal Management tab Local Management tab ﬁelds Field Description Neighbor tab Following table describes the Neighbor tab ﬁelds Neighbor tab ﬁelds Field Description Neighbor Mgmt Address tab Neighbor Mgmt Address tab Neighbor Mgmt Address tab ﬁelds Field Description Unknown TLV tab Following table describes the Unknown TLV tab ﬁeldsUnknown TLV tab Unknown TLV tab ﬁelds Field Description Organizational Deﬁned Info tab Organizational Deﬁned Info tabOrganizational Deﬁned Info tab ﬁelds Field Description Field Description 302 Conﬁguring the switch using Device Manager Conﬁguring ports using Device Manager Viewing and editing a single port conﬁguration Interface tab for a single port Interface tab ﬁelds Interface tab ﬁeldsPort dialog box Interface tab Interface tab ﬁelds for a single port Field Description Viewing and editing multiple port conﬁgurations To view or edit the conﬁgurations of multiple ports Interface tab for multiple ports Interface tab for multiple ports Interface tab ﬁelds for multiple ports Field Description 310 Conﬁguring ports using Device Manager Administering the switch using web-based management Administrative options available to you areViewing system information Quick Start System InformationSystem Information page items Description Quick Start Conﬁguring system security Items on the Quick Start Section Description Rebooting the Ethernet Routing Switch 2500 Series From the main menu, choose Administration ResetReset warning message displays Reset page message Reset to Default page message Logging out of the management interface Logout message Administering the switch using web-based management Conﬁguring the switch using web-based management Conﬁguring BootP, IP, and gateway settingsSwitch conﬁguration options available to you are Following table describes the items on the IP IP page items Section Range Description Conﬁguring BootP, IP, and gateway settings Section Range Description Modifying system settings To conﬁgure system settings, use the following procedure System page items Range Description Conﬁguring switch port status Type information in the text boxes Click SubmitRange Description Following table describes the items on the Port Management Port Management Port row of your choice, select from the lists Click Submit Conﬁguring high speed ﬂow control High Speed Flow ControlHigh Speed Flow Control page items Range Description Downloading switch images To download a switch image, use the following procedureSoftware Download Following table describes the ﬁelds on the Software Download Software Download page ﬁelds Fields Range Description Downloading Ascii conﬁguration ﬁles 100 Mb/s port status LEDs ports 18 to Ascii Conﬁguration ﬁle download Ascii Conﬁguration ﬁle download page items Description Conﬁguration File Setting items Range Description Type information in the text boxes, or select from a list Parameters not saved to the conﬁguration ﬁle Conﬁguring port communication speed From the main menu, choose Conﬁguration Console/Comm PortConsole/Communication Port page items Conﬁguring Rate Limiting Conﬁguring Rate LimitingSelect from the list Following table describes the items on the Rate Limiting Rate LimitingRate Limiting page items Section Description Troubleshooting Diagnosing and correcting problemsInterpreting the LEDs Diagnosing and correcting problems Normal power-up sequence Port connection problems Normal power-up sequence Port connection problems Corrective actions Symptom Probable causeAutonegotiation modes Port interface Appendix a DB-9 RS-232-D Console/Comm Port connector DB-9 Console port connector Pin number Signal Ring indicator not used Appendix B Default settings Factory default settings Field Default setting Field Default setting Pvid Packet Type Both Snooping Disabled Field Default setting Field Default setting Field Default setting Appendix B Default settings Appendix C Sample BootP conﬁguration ﬁle Appendix C Sample BootP conﬁguration ﬁle Appendix D Command List CLI command list Command Security Configuration and Management Nortel Ethernet Routing Switch Default tftp-server command Configuration IP Multicast NN47215-503 Ip default-gateway command No autosave enable command No banner command No logging remote level No snmp-server No tftp-server command Save config command Show banner command Show poe-port-status command Show running-config command Show terminal command Show tftp-server command Snmp-server host host-ip port Spanning-tree mstp max-hop 100 Terminal command Vlan create Appendix D Command List AC power speciﬁcations Parameter Operating specification Storage specificationAppendix E Technical speciﬁcations Environmental speciﬁcations Physical dimensions Performance speciﬁcationsNetwork protocol and standards compatibility Safety agency certiﬁcation Electromagnetic emissions Electromagnetic immunity Index Index 132 Eeprom Gbic No autotopology command Viewing 129 No banner command Index Index 181 Sntp 68, 68, 208 Software version requirements Unix Index Index Page Overview System Conﬁguration