Troubleshooting, Overview | HP 2500 guide

Troubleshooting

Troubleshooting

Overview

Overview

This chapter addresses performance-related network problems that can be caused by topology, switch configuration, and the effects of other devices or their configurations on switch operation. (For switch-specific information on hardware problems indicated by LED behavior, cabling requirements, and other potential hardware-related problems, refer to the installation guide you received with the switch.)

This chapter includes:

■Troubleshooting Approaches (page 11-3)

■Browser or Console Interface Problems (page 11-4)

■Unusual Network Activity (page 11-6)

•General Problems (page 11-6)

•IGMP-Related Problems (page 11-7)

•Spanning Tree Protocol (STP) Related Problems (page 11-8)

•VLAN-Related Problems (page 11-9)

■Using the Event Log To Identify Problem Sources (page 11-11)

■Diagnostics and management tools (page 11-14), including:

•Link test (page 11-14)

•Ping test (page 11-15)

•Browse configuration (page 11-18)

•Command prompt (page 11-13)

•Restoring the factory default configuration (page 11-20)

For information on support and warranty provisions, see the Support and

Warranty booklet shipped with the switch.

11-2

Image 334

HP 2500 manual Troubleshooting, Overview

Contents

Hp procurve series 2500 switches Page HP ProCurve Switches 2512 Management and Configuration Guide Publication Number Preface Use of This Guide and Other ProCurve Switch DocumentationPreface Page Contents Using a Standalone Web Browser in a PC or Unix Workstation Tasks for Your First HP Web Browser Interface Session Globally Assigned IP Network Addresses Chapter Contents Overview Viii Web Configuring IP Authorized Managers Web Displaying and Configuring Port Security FeaturesMenu Viewing and Configuring IP Authorized Managers Operating and Troubleshooting Notes Advanced Management Rmon and HP Extended Rmon Support Extended Rmon Vlan Support and the Default Vlan Another Stack Monitoring Stack Status Igmp Operating Features Multimedia Traffic Control with IP Multicast Igmp 10-8 10-9 Using the Event Log To Identify Problem Sources Daylight Savings Time on HP ProCurve Switches Xvi Chapter Contents Selecting a Management Interface Selecting a Management Interface OverviewUnderstanding Management Interfaces Selecting a Management Interface Enables Telnet in-band access to the menu functionality Advantages of Using the Menu InterfaceMenu interface also provides access for Advantages of Using the Menu Interface CLI Usage Advantages of Using the CLIHP2512config# HP2512 Advantages of Using the HP Web Browser Interface Advantages of Using the HP Web Browser Interface Advantages of Using HP TopTools for Hubs & Switches Advantages of Using HP TopTools for Hubs & Switches Interface Selecting a Management Interface Starting and Ending a Menu Session Using the Menu InterfaceScreen Structure and Navigation Using Configure these featuresUsing the Menu Interface Menu Interface Menu Interaction with Other Interfaces Starting and Ending a Menu SessionStarting and Ending a Menu Session HP2512# menu Enter How To Start a Menu Interface SessionPassword Results How To End a Menu Session and Exit from the Console Main Menu with Manager Privileges Using the Menu Interface Main Menu Features Main Menu Features Using the Menu Interface Screen Structure and Navigation Screen Structure and Navigation How To Navigate in the Menu Interface TaskActions Example Showing How To Display Help Rebooting the Switch Rebooting the Switch Indication of a Configuration Change Requiring a Reboot Reboot Switch option Menu Features List Menu Features ListLogout Where To Go From Here Option Where To Turn Using the Menu Interface Conventions for Command Option Displays Use Tab To Search for or Complete a Command WordDisplaying Help for an Individual Command Using the CLI Accessing the CLICLI commands are not case-sensitive Using the CLI Privilege Levels at Logon Privilege Level Operation Location, such as a locked wiring closetOperator Privileges Manager Privileges HP2512 EnableHP2512config# vlan HP2512vlan-10# Manager prompt Privilege Level Hierarchy SetupEnable Menu How To Move Between Levels Change in Levels Example of Prompt , Command, and Result Listing Commands Available at Any Privilege Level Listing Commands and Command Options? at the Operator level produces this listing Example of the Manager-Level Command Listing Typing ? at the Manager level produces this listing Command Option Displays HP2512config# portTab HP2512config# port-security Example of How To List the Options for a Specific Command Displaying CLI Help Example of Context-Sensitive Command-List Help Interface CLI Configuration Commands and the Context Configuration Modes HP2512# interface help Invalid input interface 10. Context-Specific Commands Affecting Port Context HP2512eth-5-8# ? HP2512vlan-100# HP2512config# vlanHP2512vlan-100# ? CLI Control and Editing Using the HP Web Browser Interface Tasks for Your First HP Web Browser Interface Session Using Using the HP Web Browser Interface Agent Enabled parameter setting to NoHP Web Browser Interface General Features General Features Platform Entity and OS Version Minimum Recommended Web Browser Interface RequirementsPCs PCs Using a Standalone Web Browser in a PC or Unix Workstation Enable Java and Enable JavaScript options Using HP TopTools for Hubs & Switches Http Window displayed for the selected device, as shown in figure Example of Status Overview Screen Tasks for Your First HP Web Browser Interface Session Viewing the First Time Install WindowTasks for Your First HP Web Browser Interface Session HP Web Browser Creating Usernames and Passwords in the Browser Interface Device Passwords Window String Using the User Names Using the PasswordsIf You Lose a Password Online Help for the HP Web Browser Interface Server URL on Support/Mgmt URLs Feature Support/Mgmt URLs Feature Help and the Management Server URL Support URLIf Online Help Fails To Operate. Do one of the following How To Access Web Browser Interface Online Help Status Reporting Features Status Reporting FeaturesOverview Window Port Utilization and Status Displays Port Utilization 10. Changing the Graph Area Scale 12. The Port Status Indicators and Legend Port Status Each alert has the following fields of information Alert LogSorting the Alert Log Entries Alert The specific event identification Alert Strings and Descriptions Alert TypesAlert String Alert Description Viewing Detail Views of Alert Log Entries Console interface Status Bar Status Indicator KeyColor Switch Status Blue Setting Fault Detection Policy 16. The Fault Detection Window Using the HP Web Browser Interface Using Interface Access Console/Serial Link, Web IP Addressing Access, IP Configuration IP ConfigurationIP Configuration Features Feature Default Menu Just Want a Quick Start? HP2512# setupRemove it from the switch IP Addressing with Multiple VLANs IP Addressing in a Stacking Environment From the Main Menu, Select To Configure IP AddressingSwitch Configuration IP Configuration Following screen Address Ip default-gateway Ip ttl No ip timep IP Commands Used in This SectionShow ip Syntax show ip HP2512config# ip ttl Configure the Optional Timep Server Web Configuring IP AddressingHow IP Addressing Affects Switch Operation Click on the Configuration tab Network DHCP/Bootp OperationFeatures Available Without an IP Address Servers Reply Address received via Dhcp or BootpProcess immediately J2512switch Is the IP address to be assigned to the switch or Vlan Network Preparations for Configuring DHCP/Bootp Country Globally Assigned IP Network AddressesCompany Name/Address Interface Access Features Locked environment To Access the Interface Access Parameters Menu Modifying the Interface AccessSwitch Configuration System Information CLI Modifying the Interface Access Interface Access Commands Used in This Section Configuration will take effect To disable web browser accessTo re-enable web browser access Two parameters Example of Executing a Series of Console Commands Configuring Interface System Information System Information FeaturesAt last Power reset System Information Press E for Edit. The cursor moves to the System Name field Menu Viewing and Configuring System InformationOn configuration options for these features Enter, then press S for Save and return to the Main Menu System Information Commands Used in This Section CLI Viewing and Configuring System InformationSystem information settings For example, to configure the age interval to seven minutes HP2512config# mac-age-time HP2512config# time 1545 10/01/00 Web Configuring System ParametersFor example, to set the switch to 345 p.m. on October 1 Configure System Parameters in the Web Browser Interface Configuring Interface Port Trunking Port Status and ConfigurationFeatures Viewing Port Status and Configuring Port ParametersViewing port status Configuring ports 10/100TX Status and Parameters for Each Port Type Status or Description Parameter Status or Description Trunking on Menu Viewing Port Status and Configuring Port ParametersUsing the Menu To Configure Ports From the Main Menu, Select Port Status and Configuration Commands CLI Viewing Port Status and Configuring Port ParametersShow interfaces Below Show interface config Interface Example of a Show Interface Command Listing Viewing Port Status and Configuring Port Parameters Web browser interface Click on the Configuration tab Web Viewing Port Status and Configuring Port ParametersClick on Port Configuration Port Trunking Viewing port trunks Configuring a static trunk None GroupPort Trunking Mbps Links Switch 2512 and 2524 Port Trunk Features and Operation T e U t i o n C P N o t e Lacp passive Trunk Configuration MethodsHP2512config# Int e Trunk Types Used in Static and Dynamic Trunk Groups See Trunk Operation Using the FEC Option on Trunk Configuration ProtocolsSee Trunk Group Operation Using Lacp on Protocol Trunking Options General Operating Rules for Port Trunks Monitor Port CLI To Configure Ports on Switch Configuration Port/Trunk Settings Example of the Configuration for a Two-Port Trunk Group Trunk Status and Configuration Commands Using the CLI To View Port TrunksShow trunks Below Show lacp Trunk Interface lacp Example of a Show Trunk Listing Without Specifying Ports Using the CLI To Configure a Static or Dynamic Trunk Group Trk1 Static Dyn1 Dynamic You can configure trunk group types as followsTrunk Type Trunk Group Membership Yes Trunk HP2512config# interface 5-6 lacp active Web Viewing Existing Port Trunk Groups HP2512config# no interface 1 lacpHP2512config# interface 1 lacp passive Click on Port Status Lacp trunk status include Trunk Group Operation Using LacpTrunk group Lacp Trunk Types HP2512 show lacp Default Port OperationParticular switch, execute the following command in the CLI Lacp Port Status Data Disabled The port cannot carry traffic Lacp Notes and Restrictions Trunk Group Operation Using the Trunk Option Trunk Operation Using the FEC Option How the Switch Lists Trunk Data Outbound Traffic Distribution Across Trunked Links 11. Example of Port-Trunked Network Node a Node W Node B Node C Node Y Node D Node Z Through Traffic Control Optimizing Port Usage CLI Port Security Command Options and Operation Using Passwords, Port Chapter Contents Overview Password Features Default Menu Using Password SecurityLevel Actions Permitted Menu Setting Manager and Operator passwords To set a new password Continue Deletion of password protection? No Password below CLI Setting Manager and Operator PasswordsPassword Commands Used in This Section Syntax password manager operator no password Click on Device Passwords Web Configuring User Names and PasswordsClick on the Security tab Basic Operation Configuring and Monitoring Port SecurityConfiguring Port Security Disabled Cast traffic Configuring and Monitoring Port Security Blocking Unauthorized Traffic Planning Port Security Trunk Group Exclusion Configuring and Monitoring Port Security Commands CLI Port Security Command Options and OperationPort Security Commands Used in This Section Acquires and maintains authorized addresses Port Security Parameters Ethernet port-list Mac-address mac-addr Address-limit integerClear-intrusion-flag CLI Displaying Current Port Security Settings Using the CLI To Display Port Security Settings CLI Configuring Port Security Using Passwords, Port Security, and Authorized IP HP2512config# port-security 1 mac-address 0c0090-456456 U t i o n T e Web Displaying and Configuring Port Security Features Click on Port Security Reading Intrusion Alerts and Resetting Alert Flags How the Intrusion Log Operates Keeping the Intrusion Log Current by Resetting Alert Flags Example of Multiple Intrusion Log Entries for the Same Port Type I Intrusion log to display the Intrusion Log Status and Counters Port Status Configuring and Monitoring Port Security List Intrusion Alert status List Intrusion Log contentClear Intrusion flags on all ports Using the Event Log To Find Intrusion Alerts Event Log lists port security intrusions as Operating Notes for Port Security Configuring and Monitoring Port Security Using IP Authorized Managers Authorized IP Manager Features Using IP Authorized Managers Access LevelsDefining Authorized Management Stations Overview of IP Mask Operation Masks on Switch Configuration IP Authorized Managers Menu Viewing and Configuring IP Authorized ManagersFrom the console Main Menu, select Authorized IP Managers Commands Used in This Section CLI Viewing and Configuring Authorized IP ManagersListing the Switch’s Current Authorized IP Managers IP Mask Configuring IP Authorized Managers for the Switch HP2512config# ip authorized-managers Building IP Masks Web Configuring IP Authorized ManagersConfiguring One Station Per Authorized Manager IP Entry Address of the authorized manager you want to delete Authorized 227 125 Analysis of IP Mask for Single-Station EntriesManager IP Port IP Analysis of IP Mask for Multiple-Station Entries Results Operating and Troubleshooting NotesAdditional Examples for Authorizing Multiple Stations Authorized Security, and Authorized IP Using Passwords, Port Configuring for Network Management Applications Monitoring and Managing the Switch Managing Switch Monitoring Configuring for Network Management Applications Snmp Management Features Snmp Management Features Configuring for Snmp Access to the Switch Configuring for Snmp Access to SwitchSwitch Configuration Snmp Community Names HP Entity MIB entity.mib To Restricted Snmp Communities Snmp Community FeaturesWrite access for the public community to Restricted To View, Edit, or Add Snmp Communities Snmp Communities Screen Default Values Snmp Add or Edit Screen Listing Current Community Names and Values CLI Viewing and Configuring Community NamesCommunity Name Commands Used in This Section Community community-str Configuring Community Names and Values Configuring Identity InformationHP2512# show snmp-server public Regardless of the trap receiver configuration Trap Receivers and Authentication TrapsTrap Features Opotions are used with the snmp-server host command Trap Receiver Commands Used in This Section CLI Configuring and Displaying Trap ReceiversUsing the CLI To List Current Snmp Trap Receivers Syntax show snmp-server Configuring Trap Receivers Using the CLI To Enable Authentication TrapsUsing the CLI To Enable Authentication Traps Advanced Management Rmon and HP Extended Rmon Support Extended Rmon Advanced Management Rmon and HP Extended Rmon Support Monitoring Using the CLI To View Stack Status and Configure Stacking Features Configuring Advanced Features Configuring Advanced Features 108 103105 109 Overview HP ProCurve Stack Management Stacking Features Default MenuConfigure stacking Reduce the number of IP addresses needed in your network HP ProCurve Switch 4000M HP ProCurve Switch 8000MWhich Devices Support Stacking? General Stacking Operation Components of HP ProCurve Stack ManagementStacking Definitions General Rules Operating Rules for StackingNetwork Backbone Specific Rules IP Addr Optional Stack Name N/A Overview of Configuring and Bringing Up a Stack Stacking Configuration Guide No Manager password Or fewer stack members at the moment Use of System Name to Help Identify Individual Switches General Steps for Creating a Stack Configuring Advanced Features Default Stacking Menu Default Stack Configuration Screen Using the Menu To Manage a Candidate Switch Candidate Commander, Member, or Disabled Candidate Configuration Options in the Menu InterfaceParameter Default Setting Other Settings Stack State Seconds Range 1 to 300 seconds Using the Commander To Manage The Stack You will then see the Stack Management screen Using the Commander’s Menu To Manually Add a Candidate to aTo add a Member, start at the Main Menu and select Stacking Stack Management 10. Example of Candidate List in Stack Management Screen Stacking Stacking Status All You will then see the Stacking Status All screen Member MAC Addresses Commander Member listed 14. Example of Selecting a Member for Removal from the Stack You will then see the Stack Access screen Stacking Stack Access Press Return From the Main Menu of the switch you want to move, selectStacking Status All Features Stacking Monitoring Stack Status Stack ConfigurationScreen Name Commander Member Candidate Stack Status Environments Stacking Stacking Status This Switch You will then see the Commander’s Stacking Status screenStacking Stacking Status All 19. Example of the Commander’s Stacking Status Screen You will then see the Member’s Stacking Status screen Configuring Advanced You will then see the Candidate’s Stacking Status screen CLI Commands for Configuring Stacking on a Switch Interface Used In Commander Only CLI Command Operation No stack memberManager password Commander’s CLI Using the CLI To View Stack Status Viewing the Status of Candidates the Commander Has Detected Features Configuring Advanced Viewing the Status of the Commander and Current Members Using the CLI To Configure a Commander Switch Commander Discovered 26. Example of the Commander’s Show Stack Screen with Only Adding to a Stack or Moving Switches Between Stacks Using the Commander’s CLI To Manually Add a Candidate to 28. Example of How To Determine Available Switch Numbers SNs HP 2512config# stack auto-join HP2512config# stack member 2 mac-address 0060b0-dfla00HP2512config# no stack auto-join Candidate Using the Destination Commander CLI To Pull a Member from 31. Example of Pushing a Candidate Into a Stack HP2524config# stack member 1 mac-address 0060b0-df1a00 32. Example of Stack Listing with Two Stacks in the Subnet Member Using the CLI To Remove a Member from a StackAccess to the Commander Or the Member HP2512config# no stack member 3 mac-address 0030c1-7fc700 Using the Member’s CLI To Remove the Member from a Stack North Seaconfig# no stack join 0030c1-7fec40 HP2512config# telnet Member Switch Snmp Management Station Access to Members Via the CommanderCommander Switch Snmp Community Operation in a Stack Transmission Interval Using the CLI To Disable or Re-Enable StackingSnmpget MIB variable 10.31.29.100 blue@sw2 Web Viewing and Configuring Stacking 38. Example of the Web Browser Interface for a Commander Stacking screens and listings display these status messages Status MessagesMessage Condition Action or Remedy Port-Based Virtual LANs Static VLANs Vlan Features Default MenuDisabled See Gvrp on VLANs Address would normally belong to the same Vlan 39. Example of Routing Between VLANs via an External Router 40. Example of Overlapping VLANs Using the Same Server Vlan Support and the Default Vlan Overview of Using VLANsWhich Vlan Is Primary? Per-Port Static Vlan Configuration Options Auto TaggedUntagged Forbid General Steps for Using VLANs Switch Configuration Vlan Menu Vlan Support Menu Configuring Vlan ParametersTo Change Vlan Support Settings You will then see the following screen Gvrp on Space bar to select from the existing optionsTo the Vlan Menu screen Adding or Editing Vlan Names Switch Configuration Vlan Menu Vlan Names802.1Q Vlan ID Name Switch Configuration Vlan Menu Vlan Port Assignment Adding or Changing a Vlan Port Assignment 48. Example of Vlan Port Assignment Screen Untagged, or Forbid CLI Configuring Vlan Parameters 49. Example of Vlan Assignments for Specific Ports Static-vlan vlan-id 9-67 Available if Gvrp enabled Vlan Commands Used in this Section9-67 Available if Gvrp enabled No tagged port-list No untagged port-list No forbid 51. Example of Show Vlan for a Specific Static Vlan HP2512config# primary-vlan For example, to reconfigure the switch to allow 10 VLANsFor example, to make Vlan 22 the primary Vlan That static Vlan HP2512vlan-100# vlan defaultvlanCreating a New Static Vlan Changing the Vlan Context Level For example, to create a new static Vlan with a VID HP2512config# static-vlan At the Vlan 100 context level, use Web Viewing and Configuring Vlan ParametersHP2512config# no vlan 100 tagged HP2512vlan-100# no tagged Click on Vlan Configuration Click on Add/Remove VLANs Vlan Tagging Information 54. Example of Tagged and Untagged Vlan Port Assignments For the Red VID in switch Y Port Red Vlan Green Vlan Switch Switch YUntagged Tagged IP Interfaces Effect of VLANs on Other Switch FeaturesSpanning Tree Protocol Operation with VLANs To summarize Port Trunks Vlan MAC AddressesPort Monitoring Supported Vlan RestrictionsIP Host-Only Vlan to another Vlan Symptoms of Duplicate MAC Addresses in Vlan Environments View Gvrp configuration On a GVRP-enabled switch General Operation Vlan Advertising and Joining on Switch E Gvrp On Switch D Gvrp OnSwitch C Gvrp On To allow tagged packets to pass through Per-Port Options for Handling Gvrp Unknown VLANs Options for Handling Unknown Vlan Advertisements Mode Controlling Vlan Behavior on Ports with Static VLANs Per-Port Static Vlan Options Gvrp ConfigurationPer-Port Options for Dynamic Vlan Advertising Joining Tagged or Untagged2 Auto2 Forbid2 Dynamically joining other VLANs Gvrp and Vlan Access ControlPort-Leave From a Dynamic Vlan To generate advertisements Menu Viewing and Configuring Gvrp Configuring Gvrp On a SwitchPlanning for Gvrp Operation 60. The Vlan Support Screen Default Configuration Gvrp Commands Used in This Section CLI Viewing and Configuring GvrpShow gvrp Below Gvrp Unknown -vlans HP2512config# no gvrp HP2512config# gvrpHP2512config# interface 1-2 unknown-vlans block 64. Example of Listing Showing Dynamic VLANs VLAN-222 VLAN-33 HP2512config# static Web Viewing and Configuring GvrpGvrp Operating Notes Configuring Advanced Multimedia Traffic Control with IP Multicast Igmp Igmp Features Default MenuView igmp configuration Multimedia Traffic Control with IP Multicast Igmp IGMP. Refer to IP Configuration on Igmp Operating FeaturesAddress Information screen Igmp Commands Used in This Section CLI Configuring and Displaying IgmpIndicating whether querier functionality is enabled How Igmp Operates on Igmp configuration for a Igmp configuration for allVLANs on the switch Including per-port data HP2512config# no vlan 1 ip igmp HP2512config# vlan 1 ip igmpHP2512vlan-1# ip igmp Configuring Per-Port Igmp Packet Control. Use this command Web Enabling or Disabling Igmp How Igmp Operates Role of the Switch 67. The Advantage of Using Igmp 68. Isolating IP Multicast Traffic in a Network Interaction with Multicast Traffic/Security Filters Be flooded instead of filtered by the switchNumber of IP Multicast Addresses Allowed Per Vlan in which it is used Spanning Tree Protocol STP STP Features Default MenuCast storm that can bring down the network Menu Configuring STP Switch Configuration Spanning Tree Operation 69. Example of the STP Configuration Screen Actions line Default configuration, STP appears as shown here CLI Configuring STPDefault STP Commands Used in This Section HP2512config# spanning tree 10.General STP Operating Parameters 11.Per-Port STP Parameters HP2512config# spanning tree maximum-age 30 hello-timeDefault See -11, above 107 Web Enabling or Disabling STP How STP Operates STP Fast Mode 71. Example of Redundant Paths Between Two Nodes STP Operation with 802.1Q VLANs To Configure Fast Mode for a Switch PortHP2512config# spanning-tree ethernet 1-3,5 mode fast Ing network loops 72. Example of Using a Trunked Link with STP and VLANs 112 Internet Group Management Protocol Igmp Status Switch Operation10-1 Analyzing Operation Ing. See Diagnostic Tools onMonitoring Switch Monitoring and Analyzing Switch Operation 10-2 10-3 Window under the Configuration tabStatus and Counters Data Interface Purpose Menu Access To Status and Counters Status and Counters General System Information Menu AccessCLI Access 10-5 Monitoring Switch Switch Management Address Information10-6 Port Status Web AccessStatus and Counters . . .3. Port Status Switch Operation Menu Displaying Port Status Viewing Port and Trunk Group Statistics Particular port or trunk Resetting countersFor all ports To access this screen from the Main Menu, select Menu Access to Port and Trunk StatisticsStatus and Counters Port Counters Mand provides traffic details for the port you specify CLI Access To Port and Trunk Group StatisticsWeb Browser Access To View Port and Trunk Group Statistics Click on Port Counters Viewing the Switch’s MAC Address Tables 10-11 To page through the listing, use Next page and Prev Menu Access to the MAC Address Views and SearchesStatus and Counters Address Table Enter MAC address Example of Menu Indicating Located MAC Address Listing MAC Addresses for a Specific Port CLI Access for MAC Address Views and Searches To Find the Port On Which the Switch Learned a Specific MAC Spanning Tree Protocol STP Information Menu Access to STP DataStatus and Counters Spanning Tree Information HP2512 show spanning-tree CLI Access to STP Data10-16 Show Command Output 10-17 Ports Switch uses the CLI to display the following Vlan statusVlan Information 10-18 Listing Individual Vlan Status Listing the Vlan ID VID and Status for Specific Ports10-19 Web Browser Interface Status Information 10-20 Port Monitoring Features Default Menu Port Monitoring Features10-21 Menu Configuring Port Monitoring Switch Configuration Network Monitoring Port To monitor all ports in a Vlan To monitor individual portsMonitoring and Analyzing CLI Configuring Port Monitoring Port Monitoring Commands Used in This Section For example, to assign port 12 as the monitoring port HP2512config# mirror-portHP2512config# no mirror-port To turn off port monitoring Click on Monitor Port Web Configuring Port MonitoringTo enable port monitoring Click on the Configuration tab Click on Apply Changes Menu Entering and Navigating in the Event Log Troubleshooting11-1 Troubleshooting Troubleshooting Approaches Troubleshooting Approaches11-3 Cannot access the web browser interface Browser or Console Access ProblemsBrowser or Console Access Problems 11-5 Ip Invalid ARP source IP address on IP address General ProblemsUnusual Network Activity 11-6 IGMP-Related Problems 11-7 Timep or Gateway Problems Problems Related to Spanning-Tree Protocol STPStacking-Related Problems Switch Cannot Find the Timep Server or the Configured Within Same Outside Tagged Vlan VLAN-Related Problems11-9 Tagged Monitor 11-10 Date Time System Module Using the Event Log To Identify Problem Sources08/05/98 105232 Ports Port 1 enabled 11-11 From the Main Menu, select Event Log Menu Entering and Navigating in the Event LogEvent Log System Modules 11-12 Event Log Control Keys HP2512 show logging -a system Diagnostic Tools Diagnostic ToolsDiagnostic Features Ping and Link Tests Web Executing Ping or Link Tests 11-15 CLI Ping or Link Tests To halt a ping test before it concludes, press Ctrl C 11-16 14.Example of Link Tests Troubleshooting 11-17 Web Viewing the Configuration File Displaying the Configuration FileCLI Viewing the Configuration File Click on Configuration Report Displays the current command Currently running on the switchDisplays the switch shutdown Toggles the paging mode for CLI Resetting to the Factory-Default Configuration Restoring the Factory-Default ConfigurationClear/Reset Resetting to the Factory-Default Configuration Appendix Contents Model. See Transferring Switch Configurations on page A-10 Downloading an Operating System OS Using Tftp To Download the OS File from a Server Downloading an Operating System OS Menu Tftp Download from a Server Console Main Menu, select Download OS to display this screen Check the Firmware revision line CLI Tftp Download from a ServerValidating and Writing System Software to Flash Series 2500 Switch-to-Switch Download Using the SNMP-Based Software Update UtilityMenu Switch-to-Switch Download Menu Xmodem Download Using Xmodem to Download the OS File From a PCCLI Switch-To-Switch Download Syntax CLI Xmodem Download from a PC or Unix Workstation HP2512 show system Troubleshooting Tftp Downloads Troubleshooting Tftp DownloadsHP2512# show log tftp Transfer Features Default Menu Transferring Switch ConfigurationsTftp Retrieving a Configuration from a Remote Host Session in which the download was attempted Tftp Copying a Configuration to a Remote Host Syntax copy xmodem startup-config pc unix Appendix B Contents MAC Address Management MAC Address Management MAC Address Viewing Methods Feature Default MenuDetermining MAC Addresses Determining MAC Addresses Any additional VLANs configured on the switch Menu Viewing the Switch’s MAC AddressesBase switch default Vlan VID = Configured on the Switch CLI Viewing the Port and Vlan MAC Addresses HP2512# walkmib ifPhysAddress Switch Memory and Configuration Switch Memory and Configuration Overview of Configuration File Management Startup-Config File HP2512config# write memory Any of the following actions reboots the switchHP2512config# interface ethernet 5 disable Overview of Configuration File Management Using the CLI To Implement Configuration Changes Using the CLI To Implement Configuration Changes HP2512config# interface e 5 speed-duplex auto-10 Syntax write memory Do you want to save current configuration y/n? With the factory-default startup configuration Changes Syntax erase startup-configChanges on page C-9 Cancelled Using Save and Cancel in the Menu InterfaceMemory in the CLI before rebooting the switch Rebooting from the Menu Interface 73.The Reboot Switch Option in the Main Menu Configuration Changes Using the Web Browser Interface To ImplementConfig file and the startup-config file Alaska 2524 2400M 224M Switches 2424MDaylight Savings Time on HP ProCurve Switches Canada and Continental US Southern Hemisphere ProCurve SwitchesMiddle Europe and Portugal Western Europe Daylight Savings Time on HP ProCurve Switches Page Index Index See FEC Garp Lacp See Igmp See Vlan See MIB See also IP VID Xmodem OS download … A-7 XNS …