HP 2600-PWR, 2626, 2626-PWR, 2650, 2650-PWR, 2800, 2824, 2848, 4100, 4104GL, 4108GL, 6108 Figure C-5.Example of Correct VLAN Port Assignments on a Link

Troubleshooting

Unusual Network Activity

				Link supporting VLAN_1
		Switch “X”		and VLAN_2		Switch “Y”

		Port X-3			Port Y- 7


VLAN Port Assignment				VLAN Port Assignment
Port		VLAN_1 VLAN_2		Port		VLAN_1	VLAN_2
X-3		Untagged Tagged		Y-7		Untagged	Tagged

Figure C-5. Example of Correct VLAN Port Assignments on a Link

1.If VLAN_1 (VID=1) is configured as “Untagged” on port 3 on switch “X”, then it must also be configured as “Untagged” on port 7 on switch “Y”. Make sure that the VLAN ID (VID) is the same on both switches.

2.Similarly, if VLAN_2 (VID=2) is configured as “Tagged on the link port on switch “A”, then it must also be configured as “Tagged” on the link port on switch “B”. Make sure that the VLAN ID (VID) is the same on both switches.

Duplicate MAC Addresses Across VLANs. The switch operates with mul tiple forwarding databases. Thus, duplicate MAC addresses occurring on different VLANs can appear where a device having one MAC address is a member of more than one 802.1Q VLAN, and the switch port to which the device is linked is using VLANs (instead of STP or trunking) to establish redundant links to another switch. If the other device sends traffic over multiple VLANs, its MAC address will consistently appear in multiple VLANs on the switch port to which it is linked.

Note that attempting to create redundant paths through the use of VLANs will cause problems with some switches. One symptom is that a duplicate MAC address appears in the Port Address Table of one port, and then later appears on another port. While the switch has multiple forwarding databases, and thus does not have this problem, some switches with a single forwarding database for all VLANs may produce the impression that a connected device is moving among ports because packets with the same MAC address but different VLANs are received on different ports. You can avoid this problem by creating redundant paths using port trunks or spanning tree.

C-21

Contents

Page Page HP ProCurve Switch 2600 Series Switch 2600-PWRSeries Switch 2800 Series Switch 4100gl Series Page 1 Getting Started 2 Selecting a Management Interface 3 Using the Menu Interface 4 Using the Command Line Interface (CLI) 5 Using the HP Web Browser Interface 6 Switch Memory and Configuration 7 Interface Access and System Information 8 Configuring IP Addressing 9 Time Protocols 10 Port Status and Basic Configuration Page 11Power Over Ethernet (PoE) Operation for the Series 2600-PWRSwitches 12 Port Trunking 13 Configuring for Network Management Applications A File Transfers B Monitoring and Analyzing Switch Operation C Troubleshooting D MAC Address Management E Daylight Savings Time on HP ProCurve Switches Index Getting Started Introduction About the Feature Descriptions Conventions copy tftp Syntax: hostname Figure 1-1.Example of a Figure Showing a Simulated Screen Port Identity Convention for Examples Related Publications Read Me First Release Notes Getting Documentation From the Web 2.Click on technical support manuals Figure 1-2.Finding Product Manuals on the HP ProCurve Website Sources for More Information Figure 1-3.Getting Help in the Menu Interface Figure 1-4.Getting Help in the CLI Need Only a Quick Start setup 8.Run Setup Important Selecting a Management Interface Understanding Management Interfaces Advantages of Using the Menu Interface Figure 2-1.Example of the Console Interface Display Provides quick, easy management access Offers out-of-band Advantages of Using the CLI Figure 2-2.Command Prompt Examples Advantages of Using the HP Web Browser Interface Figure 2-3.Example of the HP Web Browser Interface Easy access Familiar browser Advantages of Using HP ProCurve Manager or HP ProCurve Manager Plus Figure 2-4.Example of the Home Page for HP ProCurve Manager Plus Network Status Summary: Alerts and Troubleshooting: Automatic Device Discovery: Topology and Mapping: Device Management: Device Software Updates: Using the Menu Interface Page N o t e Starting and Ending a Menu Session menu Figure 3-1.The Main Menu with Manager Privileges Switch Configuration Figure 3-2.An Asterisk Indicates a Configuration Change Requiring a Reboot Reboot Switch Main Menu Features Figure 3-3.The Main Menu View with Manager Privileges Status and Counters: Switch Configuration: Console Passwords: Command Line (CLI): Reboot Switch: Download OS: Run Setup: Stacking: Screen Structure and Navigation Figure 3-4.Elements of the Screen Structure Table 3-1.How To Navigate in the Menu Interface Help Figure 3-5.Example Showing How To Display Help Rebooting the Switch Figure 3-6.The Reboot Switch Option in the Main Menu Rebooting To Activate Configuration Changes 2.Switch Configuration 8.VLAN Menu Figure 3-7.Indication of a Configuration Change Requiring a Reboot Menu Features List Where To Go From Here Page Using the Command Line Interface (CLI) Accessing the CLI Command Line (CLI) Using the CLI Figure 4-1.Example of CLI Log-OnScreen with Password(s) Set C a u t i o n Figure 4-2.Access Sequence for Privilege Levels config Context Configuration level: Changing Interfaces Table 4-1.Privilege Level Hierarchy Command Line Interface (CLI) Figure 4-3.Example of the Operator Level Command Listing Figure 4-4.Example of the Manager-LevelCommand Listing - - MORE Page Listing Command Options Figure 4-5.Example of How To List the Options for a Specific Command Syntax: help Figure 4-6.Example of Context-Sensitive Command-ListHelp Syntax interface Figure 4-7.Example of How To Display Help for a Specific Command Figure 4-8.Example of Help for a Specific Instance of a Command Port or Trunk-Group Context trk1 Figure 4-9. Context-SpecificCommands Affecting Port Context VLAN Context Figure 4-10. Context-SpecificCommands Affecting VLAN Context CLI Control and Editing Using the HP Web Browser Interface Agent Enabled No General Features Starting an HP Web Browser Interface Session with the Switch Location Address http: Page Figure 5-1.Example of Status Overview Screen Tasks for Your First HP Web Browser Interface Session Figure 5-2.First-TimeInstall Window Operator Manager Figure 5-3.The Device Passwords Window secure access to the device Security Figure 5-4.Example of the Password Window in the Web Browser Interface Figure 5-5.The Help Button Support/Mgmt URLs Feature Support URL Management Server URL Figure 5-6.The Default Support/Mgmt URLs Window Support http://www.hp.com/go/procurve Management Server URL http://www.hp.com/rnd/device_help Figure 5-7.How To Access Web Browser Interface Online Help Status Reporting Features Figure 5-8.The Status Overview Window Figure 5-9.The Graphs Area % Unicast Rx & All Tx: Maximum Activity Indicator: Utilization Guideline To change the amount of bandwidth the Port Utilization bar graph Figure 5-10.Changing the Graph Area Scale Figure 5-11.Display of Numerical Values for the Bar Figure 5-12.The Port Status Indicators and Legend Port Connected Port Not Connected Port Disabled Port Figure 5-13.Exampleof the Alert Log Alert Description Excessive CRC/Alignment errors on port: Acknowledge Event Delete Event Cancel Button Page Figure 5-15.Example of the Status Bar Status Indicator Table 5-1.StatusIndicator Key System Name system name Product Name Figure 5-16.The Fault Detection Window Log Network Problems High Sensitivity Medium Sensitivity Low Sensitivity Never Apply Changes Switch Memory and Configuration Overview of Configuration File Management Figure 6-1.Conceptual Illustration of Switch Memory Operation Running Config File: Startup-config File: In the menu interface: In the web browser interface: Page Using the CLI To Implement Configuration Changes show config running-config write terminal How To Cancel Changes You Have Made to the Running-ConfigFile Figure 6-2.BootPrompt for an Unsaved Configuration How To Reset the startup-configand running-configFiles to the Factory-Default Configuration Figure 6-3.Resettingto the Factory-DefaultConfiguration Using the Menu and Web Browser Interfaces To Implement Configuration Changes ancel Figure 6-4.Example of Pending Configuration Changes that Can Be Saved or Cancelled Figure 6-5.The Reboot Switch Option in the Main Menu 2. Switch Configuration 8. VLAN Menu Figure 6-6.Indication of a Configuration Change Requiring a Reboot Using Primary and Secondary Flash Image Options Primary Flash: Secondary Flash: Figure 6-7.Example Showing the Identity of the Current Flash Image Figure 6-8.Example Showing Different Flash Image Versions Determining Which Flash Image Versions Are Installed. The show ver Figure 6-9.Determining the Software Version in Primary and Secondary Flash Table 6-1.Primary/Secondary Memory Access Download Interruptions Copying a Switch Software Image from One Flash Location to Syntax: copy flash flash <destination flash copy flash flash where: destination flash = primary or secondary: primary Figure 6-10.Example Indicating Two Different Software Versions in Primary and Secondary Flash C a u t i o n - - N o U n d o Figure 6-11.Example of Erase Flash Prompt show flash Figure 6-12.Example of Show Flash Listing After Erasing Primary Flash Table 6-2.Comparing the Boot and Reload Commands Booting from Primary Flash Syntax: boot Figure 6-13.Example of Boot Command (Default Primary Flash) Syntax: boot system flash < primary | secondary Figure 6-14.Example of Boot Command with Primary/Secondary Flash Option Syntax: reload Figure 6-15.UsingReload with Pending Configuration Changes Default Boot Source Boot Attempts from an Empty Flash Location. In this case, the switch Interaction of Primary and Secondary Flash Images with the Current Page Interface Access and System Information kill Interface Access: Console/Serial Link, Web, and Telnet Interface Access Features To Access the Interface Access Parameters: 2.Switch Configuration 1.System Information Interface Access Commands Used in This Section Listing the Current Console/Serial Link Configuration. This com Syntax: show console Figure 7-2.Listing of Show Console Command Reconfigure Inbound Telnet Access. In the default configuration Reconfigure Web Browser Access events Figure 7-3.Example of Executing the Console Command with Multiple Parameters Figure 7-4.Example of Executing a Series of Console Commands Denying Interface Access by Terminating Remote Management Sessions Syntax: kill [<session-number>] System Information System Information Features System Name: System Contact and Location: MAC Age Interval: Time Zone: Daylight Time Rule: None Time: System Information Commands Used in This Section Listing the Current System Information. This command lists the current Syntax: show system-information Figure 7-7.Example of CLI System Information Listing Configure a System Name, Contact, and Location for the Switch. To Syntax: hostname <name-string snmp-server[contact <system contact>] [location <system location>] Figure 7-8.System Information Listing After Executing the Preceding Commands Syntax: mac-age-time <10 . . 1000000> (seconds) mac-age-time Configure the Time Zone and Daylight Time Rule. These commands: Configure the Time and Date Configure System Parameters in the Web Browser Interface 2.Click on System Info Configuring IP Addressing Why Configure IP Addressing IP Configuration Packet Time-To-Live (TTL) 8. Run Setup N o t e s IP Config DHCP/Bootp To Configure IP Addressing 2.Switch Configuration 5.IP Configuration Figure 8-1.Example of the IP Service Configuration Screen without Multiple VLANs Configured Default Gateway Default TTL DHCP/ Bootp IP Commands Used in This Section Figure 8-2.Example of the Switch’s Default IP Addressing show ip Figure 8-3.Example of Show IP Listing with Non-DefaultIP Addressing Configured — or — Figure 8-4.Example of Configuring and Displaying a Multinetted VLAN Figure 8-5.Example of Multinetting on the Default VLAN Removing or Replacing IP Addresses in a Subnetted VLAN. To Configure the Optional Default Gateway. Using the Global configura Note ip route Table 8-1.Features Available With and Without IP Addressing on the Switch Page Bootp Database Record Entries /etc/bootptab Page IP Preserve: Retaining VLAN-1IP Addressing Across Configuration File Downloads ip preserve Figure 8-6.Example of Implementing IP Preserve in a Switch Configuration File Page Page Page Time Protocols timesync Notes Unicast Mode: SNTP: Viewing, Selecting, and Configuring Table 9-1.SNTPParameters Figure 9-1.The System Information Screen (Default Values) Page Viewing the Current SNTP Configuration Figure 9-2.Example of SNTP Configuration When SNTP Is the Selected Time Synchronization Method Configuring (Enabling or Disabling) the SNTP Mode Figure 9-4.Example of Enabling SNTP Operation in Broadcast Mode Enabling SNTP in Unicast Mode Figure 9-5.Example of Configuring SNTP for Unicast Operation sntp server Figure 9-6.Example of Specifying the SNTP Protocol Version Number Changing the SNTP Poll Interval Figure 9-7.Example of SNTP with Time Sychronization Disabled Disabling the SNTP Mode Figure 9-8.Example of Disabling Time Synchronization by Disabling the SNTP Mode TimeP: Viewing, Selecting, and Page Page Page Page Page Page SNTP Unicast Time Polling with Multiple SNTP Servers Adding Addresses Figure 9-16.Example of SNTP Server Address Prioritization Deleting Addresses Syntax: no sntp server <ip-addr SNTP Messages in the Event Log Port Status and Basic Configuration Page Viewing Port Status and Configuring Port Parameters Port Status and Configuration Features Note On Connecting Transceivers to Table 10-1.Status and Parameters for Each Port Type Page Status and Counters Figure 10-1.Example of the Port Status Screen Using the Menu To Configure Ports 2. Switch Configuration 2. Port/Trunk Settings Figure 10-2.Example of Port/Trunk Settings with a Trunk Group Configured Enabled show interface config Table 10-2.Comparing the "Show Interfaces” Command Options Figure 10-3.Example Show Interface Command Listing, 4100gl Switch Figure 10-4.Example Show Interface Config Command Listing, 4100gl Switch Figure 10-5.Example Show Interface Brief Command Listing, 2600 Switch Figure 10-6.Example Show Interface Config Command Listing, 2600 Switch int ethernet int e memory Figure 10-7.Example of Configuring a Global Broadcast Limit show running Figure 10-8.Example of Displaying a Broadcast-LimitSetting Note write-memory Page Table 10-1.Cable Types for Auto and Manual MDI/MDI-XSettings automdix mdi mdix show interfaces config Figure 10-2.Example of Displaying the Current MDI Configuration Figure 10-3.Example of Displaying the Current MDI Operating Mode Port Response to Switch Software Updates 2.Click on Port Configuration Modify Selected Ports Jumbo Packets on the Series 2800 Switches Jumbo Packet: Jumbo VLAN: MTU Standard MTU: Required Port Speed: jumbo Figure 10-4.Example Listing of Static VLANs To Show Jumbo Status Per VLAN Jumbo Figure 10-5.Example of Listing the VLAN Memberships for a Range of Ports vlan < vid [no] no jumbo Page Figure 10-7.Forwarding Jumbo Packets Through Non-JumboPorts A VLAN is configured to allow jumbo packets, but one or more ports drops all inbound jumbo packets speed-duplex auto QoS Pass-ThroughMode on the Series 2800 Switches General Operation NOTE: QoS Priority Mapping With and Without QoS Pass-ThroughMode How to enable/disable QoS Pass-ThroughMode Synta qos-passthrough-mode Figure 11. Example of the Startup-ConfigFile Listing with QoS Pass-Through Mode Enabled Page Table 10-3.Mapping Priority Settings to Device Queues Page Page Page Using Friendly (Optional) Port Names Show show name show interface invalid input Figure 10-10.Example of Configuring a Friendly Port Name Figure 10-11.Example of Configuring One Friendly Port Name on Multiple Ports To List All Ports or Selected Ports with Their Friendly Port Names Figure 10-12.Example of Friendly Port Name Data for All Ports on the Switch Including Friendly Port Names in Per-PortStatistics Listings. A Figure 10-14.Example of a Friendly Port Name in a Per-PortStatistics Listing To Search the Configuration for Ports with Friendly Port Names Page Power Over Ethernet (PoE) Operation for the Series 2600-PWRSwitches Applicable Switch Models Terminology General PoE Operation Insufficient PoE Power Available: Table 1. Port-GroupMaximum Power Allocations Page Table Example of PoE Priority Operation Configuring PoE Operation total Critical: Viewing PoE Configuration and Status Max Power: PowerInUse: Operational Status: Off Port: Power Enable: Priority: Configured Type: •Detection Status: Disabled: Over Current Cnt: Voltage: Power: MPS Absent Cnt: Short Cnt: Current: Figure 3. Example of Show Power-Management< port-list > Output Planning and Implementing a PoE Configuration Username/Password Security: PoE Operating Notes PoE Event Log Messages power threshold <1 - 99 power threshold < 1 - 99 Page Page Port Trunking Port Status and Configuration Figure 12-1.Conceptual Example of Port Trunking Table 10-2.Port Group Boundaries when IP Routing Enabled - 2800 Switches ip routing Port Security Restriction L A C P N o t e Auto-10 Auto-100 Auto-1000 10FDx Table 12-1.Trunk Types Used in Static and Dynamic Trunk Groups Table 12-2.Trunk Configuration Protocols Table 12-3.General Operating Rules for Port Trunks Dyn1 Trk1 show ip igmp Important 2.Switch Configuration 2.Port/Trunk Settings Figure 12-4.Example of the Menu Screen for Configuring a Port Trunk Group Trk1, Trk2 Figure 12-5.Example of the Configuration for a Two-PortTrunk Group LACP Trunk Status and Configuration Commands Listing Static Trunk Type and Group for All Ports or Selected Ports Figure 12-6.Example Listing Specific Ports Belonging to Static Trunks Figure 12-7.Example of a Show Trunk Listing Without Specifying Ports Figure 12-8.Example of a Show LACP Listing Figure 12-9.Example of a Dynamic LACP Trunk with One Standby Link I m p o r t a n t Trk2 Passive Page Click on Port Status Page Table 12-4.LACP Trunk Types Page Table 12-5.LACP Port Status Data 802.1X (Port-BasedAccess Control) Configured on a Port. To main Changing Trunking Methods Static LACP Trunks Dynamic LACP Trunks trunk VLANs and Dynamic LACP Forbid Half-Duplexand/or Different Port Speeds Not Allowed in LACP Trunks Page Figure 12-12.Example of Port-TrunkedNetwork Table 12-6.Example of Link Assignments in a Trunk Group (SA/DA Distribution) Page Configuring for Network Management Applications Page Using SNMP Tools To Manage the Switch products index Network Management software MIBs Page snmpv3 only snmpv3 restricted-access N o t e : I n i t i a l U s e r s Figure 13-1.Example of SNMP version 3 Enable Command Default: snmpv3 user Figure 13-2.Adding and showing Users for SNMPv3 snmpv3 group Figure 13-3.Assign Users to group for SNMPv3 Manager Read View Discovery View snmpv3 community CommunityOperatorReadWrite CommunityOperatorReadOnly Figure 13-4.Assigning a Community to a Group Access Level Table 13-1.SNMP Community Features To View, Edit, or Add SNMP Communities: 6.SNMP Community Names Figure 13-5.The SNMP Communities Screen (Default Values) Add Figure 13-6.The SNMP Add or Edit Screen Need Help elp Figure 13-7.Example of the SNMP Community Listing with Two Communities snmp-server operator manager restricted unrestricted snmpv3 notify snmpv3 targetaddress snmpv3 params snmpNotifyTable params ver3 sec-model < noauth | auth | priv public Thresholds: Using the CLI To List Current SNMP Trap Receivers Figure 13-9.Example of Show SNMP-ServerListing Configuring Trap Receivers Note: Table 13-2.Options for Sending Event Log Messages as Traps Using the CLI To Enable Authentication Traps Page CDP CDP Device: CDP-Aware: CDP-Disabled Non-CDP Device: Figure 13-10.Example of How the Switch Stores Data on Neighbor CDP Devices Figure 13-11.Example of Outgoing CDP Packet Operation Figure 13-12.Example of Incoming CDP Packet Results Switch A: Switch B: Table 13-3.How Devices Handle Incoming CDP Packets Default Configuration holdtime timer Syntax: show cdp Figure 13-14.Example of Show CDP with the Default CDP Configuration detail Figure 13-15.Example of CDP Neighbors Table Listing Page Figure 13-18.Example of Disabling CDP on an Individual Port Changing the Transmission Interval for Outbound CDP Packets Changing the Hold Time (CDP Packet Time-To-Live)for a Switch’s Figure 13-19.Example of STP Effect on CDP Packet Transmission Page Table 13-4.CDP Neighbors Data Displaying CDP Neighbor Data Figure 13-21.Example of CDP Neighbor Data http://ww.hp.com/go/hpprocurve MIBs CDP Version Data Port Trunking with CDP CDP-Capable Hubs Page File Transfers Downloading Switch Software Switch Software Download Features G0721.swi Download OS Figure A-1.Example of the Download OS Screen (Default Values) TFTP TFTP Server ecute Figure A-2.Example of the Download OS Screen During a Download b.Check the Firmware revision line copy Figure A-3.Example of the Command to Download Switch Software Validating and Writing System Software to FLASH show system Page rcp ip ssh filetransfer Page $HOME/.ssh/known_hosts Send File ransfer 7.Download OS XMODEM Press enter and then initiate Xmodem transfer from the attached computer Transfer Figure A-4.Example of the Command to Download Switch Software Using Xodem boot system flash <primary | secondary Firmware revision 7. Download OS flash /os/primary /os/secondary Validating and writing system software to FLASH Downloading from Either Flash in the Source Switch to Either Flash Figure A-6. Switch-to-Switch,from Either Flash in Source to Either Flash in Destination Troubleshooting TFTP Downloads Figure A-7.Example of Message for Download Failure Transferring Switch Configurations TFTP: Copying a Configuration from a Remote Host TFTP: Copying a Configuration File to a Remote Host Syntax: sw4100 Xmodem: Copying a Configuration File from the Switch to a Serially Xmodem: Copying a Configuration File from a Serially Connected PC Copying Diagnostic Data to a Remote Host, PC, or Unix Workstation Figure A-8.Example of Sending Command Output to a File on an Attached PC Figure A-9.Example of Sending Event Log Content to a File on an Attached PC Figure A-10.Example of Copying Switch Crash Data Content to a PC Page Page Monitoring and Analyzing Switch Operation Page Status: Counters: Event Log Configurable trap receivers: Port monitoring (mirroring): Status and Counters Data 1. Status and Counters Figure B-1.The Status and Counters Menu Figure B-2.Example of General Switch Information 1 Status and Counters 2. Switch Management Address Information Figure B-3.Example of Management Address Information with VLANs Configured 1.Status and Counters 3.Module Information Figure B-4.Example of Module Information in the Menu Interface 4.Port Status Figure B-5.Example of Port Status on the Menu Interface 2.Click on Port Status N o t e o n R e s e t 4.Port Counters Figure B-6.Example of Port Counters on the Menu Interface how Details Figure B-7.Example of the Display for Show details on a Selected Port Reset 2.Click on Port Counters Refresh Page 5.VLAN Address Table Figure B-8.Example of the Address Table ext page rev page earch Figure B-9.Example of Menu Indicating Located MAC Address 7.Port Address Table Figure B-10.Listing MAC Addresses for a Specific Port Determining Whether a Specific Device Is Connected to the Selected Port To List All Learned MAC Addresses on the Switch, with The Port Number on Which Each MAC Address Was Learned Corresponding Port Numbers To Find the Port On Which the Switch Learned a Specific MAC Figure B-11.List the Port on which the Switch Deleted a MAC Address 8.Spanning Tree Information Figure B-12.Example of Spanning Tree Information how ports Figure B-13.Example of STP Port Information Figure B-14.Example of IGMP Group Data Ports VLAN Listing the VLAN ID (VID) and Status for ALL VLANs in the Switch Figure B-15.Example of VLAN Listing for the Entire Switch Figure B-16.Example of VLAN Listing for Specific Ports Listing Individual VLAN Status Figure B-17.Example of Port Listing for an Individual VLAN Figure B-18.Exampleof a Web Browser Interface Status Overview Screen Port and Static Trunk Monitoring Features 3.Network Monitoring Port Figure B-19.The Default Network Monitoring Configuration Screen Monitoring Port Figure B-20.How To Select a Monitoring Port Monitor Action show monitor Figure B-21.Example of Monitored Port Listing Configuring the Monitor Port Syntax Selecting or Removing Ports and Static Trunks As Monitoring Sources Figure B-23.Examples of Removing Ports as Monitoring Sources 2.Click on Monitor Port Monitor Selected Ports 4.Click on Apply Changes Monitoring Off 2.Click on Apply Changes Page Troubleshooting Page Troubleshooting Approaches Check the HP ProCurve web site Check the switch LEDs Check the network topology/installation Check the network cables ■Use the software tools: Web Browser Interface Chassis Over-TemperatureDetection Figure C-1.Chassis Over-TemperatureMessaging C A U T I O N Browser or Telnet Access Problems Cannot access the web browser interface: Web Agent Enabled 5.IP Configuration 2.Switch Management Address Information Cannot Telnet into the switch console from a station on the network: Inbound Telnet Enabled Note Unusual Network Activity The network runs slow; processes fail; users cannot access servers or other devices Duplicate IP Addresses ip: Invalid ARP source: IP address on IP address The Switch Has Been Configured for DHCP/Bootp Operation, But Has Ports configured for non-defaultprioritization (level 1 - 7) are not performing the specified action IP Multicast Traffic Floods Out All Ports; IGMP Does Not Appear To Filter Traffic Try Using the Web Browser Interface: Using the Switch Console Interface: no trunk [e] interface [e] > lacp show log radius-server timeout During RADIUS-authenticatedclient sessions, access to a VLAN on the The supplicant statistics listing shows multiple ports with the same authenticator MAC address RADIUS server fails to respond to a request for service, even though show radius Figure C-3.Example of How To List the Global and Server-SpecificRadius Encryption Keys show port- access authenticator Figure C-4.Examples of Global and Unique Encryption Keys Broadcast Storms Appearing in the Network. This can occur when Fast-Uplink Troubleshooting pub-key file crypto key generate client-public-key Event Log tacacs-server aaa authentication num-attempts The Switch Cannot Find the Time Server or the Configured Gateway Monitor Port None of the devices assigned to one or more VLANs on an 802.1Q Link Configured for Multiple VLANs Does Not Support Traffic for One Figure C-5.Example of Correct VLAN Port Assignments on a Link Figure C-6.Example of Duplicate MAC Address Using Logging To Identify Problem Sources 10:52:32 ports: port A1 enabled Figure C-7.Anatomy of an Event Log Message Severity Table C-1.EventLog System Modules Event Log Figure C-8.Example of an Event Log Display Next page Prev page End Page Figure C-9.Example of Debug Output to a Console CLI Session Debug Types Note: Configuring the Switch To Send Debug Messages to One or More SyslogD Servers kern auth Figure C-10.Example of Configuring and Enabling Syslog Logging lpr Enabling or Disabling Logging to Management Sessions and SyslogD Servers debug destination session Figure C-11.Example of Disabling Syslog Operation Figure C-12.Example of Show Config Output with SyslogD Servers Configured Figure C-13.Example of Show Debug Status A reboot temporarily suspends Syslog logging Diagnostic Tools Diagnostic Features Page Figure C-14.Linkand Ping Test Screen on the Web Browser Interface Successes Failures Number of Packets to Send Ping Tests Figure C-15.Examples of Ping Tests Link Tests Figure C-16.Example of Link Tests Diagnostics 2.Click on Configuration Report Page Figure C-17.The Capture Text window of the Hypertext Application Used with Microsoft Windows Software Figure C-18.Example of a Path and Filename for Creating a Text File from show tech Output Page Restoring the Factory-Default Configuration erase startup-config Restoring a Flash Image erase flash Call Disconnect ii.Select File | Properties iii.Click on Configure vi.Select Call | Connect Figure C-19.Example of Xmodem Download in Progress MAC Address Management Determining MAC Addresses in the Switch Use the menu interface Use the CLI Configured on the Switch: Figure D-1.Example of the Management Address Information Screen walkmib Figure D-2.Example of Port MAC Address Assignments mac-address Figure D-3.Displaying MAC Addresses Detected by a Switch Daylight Savings Time on HP ProCurve Switches Canada and Continental US: Middle Europe and Portugal: Southern Hemisphere: Western Europe: Figure E-1.Menu Interface with "User-Defined"Daylight Time Rule Option Page Page Symbols Numerics