Common Faults | HP Networking TopTool Products specs

Alerts

Interpreting the Alert Log - Automatic Fault Finding

Table 5-1. Common Faults

Fault	Description, Cause and Actions

Too many	Description: A device on this port is transmitting packets shorter than 64 bytes or longer than 1518 bytes
undersized/giant	(longer than 1522 bytes if tagged), with valid CRCs.
packets
	Possible Causes: a misconfigured NIC or a malfunctioning NIC, NIC driver, or transceiver
	Actions:
	1.	Check the NIC for a misconfiguration.
	2.	Update the NIC driver software.
	3.	Replace the malfunctioning NIC or transceiver.
	4.	Check for a short-circuit in the cable patch connected to this port.

Excessive	Description: A device on this port is continually transmitting packets (jabbering). This is detected as
jabbering	oversize packets with CRC errors.
	Possible causes: A misconfigured NIC, or a malfunctioning NIC or transceiver. It could also be caused by
	a short-circuit in the network cable path.
	Actions:
	1.	Check NIC for a misconfiguration.
	2.	Update the NIC driver software.
	3.	Replace the NIC or transceiver.
	4.	Check for a short-circuit in the cable path connected to this port.

Excessive CRC/	Description: A high percentage of data errors was detected on this port.
alignment errors
	Possible Causes:
	•	Faulty cabling or topology
	•	Half/full duplex mismatch
	•	Misconfigured NIC
	•	Malfunctioning NIC, NIC driver or transceiver
	Actions:
	1.	If the port is 100Base-T, make sure the cable, connectors, punch-down blocks, and patch panels
		connecting to the port are Category 5 or better. Verify the installation with a Category 5 test device.
	2.	Check the directly-connected device for mismatches in half/full duplex operation (half duplex on the
		switch and full duplex on the connected device, or the reverse).
	3.	Update the NIC driver software.
	4.	Verify that the network topology conforms to IEEE 802.3 standards.
	5.	Replace or relocate the cable.
	6.	Check the wiring closet components, transceivers, and NICs for proper operation.

5-3

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HP Networking TopTool Products manual Common Faults, Fault Description, Cause and Actions

Contents

HP TopTools for Hubs & Switches User Guide Page User Guide HP TopTools for Hubs & Switches Applicable Product Contents Hardware and Software Requirements Listing Devices Configuring PollingDevice Topology Node Port Table Locating a Node Custom Groups Searching for Devices Top Conversations Inventory of End Nodes Monitoring Network Traffic Overview Basic Operation Quality of Service Viii Managing Switches Performing Diagnostics Appendix a How to Update the Map Files Quick Start Starting HP TopTools for Hubs Switches Quick Start Getting Around in HP TopTools Devices Viewing Your Network DevicesMaps Using the Panner Quality of ServicePolicies Examining Alerts Configuration Policies List of Networking Devices Configuring and Monitoring Devices T e Traffic Monitor Viewing Network Traffic Network Meter Optimizing Your NetworkTop Talkers How to Get Support Introduction to HP TopTools IntroductionTopics covered in this chapter include Introduction HP TopTools for Hubs & Switches Ware running and know how to use your network utilities HP TopTools for Hubs & Switches Home Viewing a List of Devices Network Devices Features Group Policies Network TrafficNetwork Growth HP Devices Supported Snmp J2611A HP Switches Supported Learning to Use HP TopTools HP TopTools Technical Product Support HP Procurve Switches & Hubs Technical Support Introduction Requirements System RequirementsHardware and Software Requirements System Requirements System Requirements Beginning Discovery Discovering Your Devices Selecting Networks Discovery StatusDiscovering Your Devices Adding Devices for Discovery Networks Page of Settings for Discovery Settings Page of Settings Discovery Configuring Discovery Settings Additional Community Names Troubleshooting Discovery Inventory of Devices Alerts Interpreting the Alert Log Automatic Fault FindingThis chapter contains information on Alerts Alerts Fault Description, Cause and Actions Common Faults Check for faulty cabling, transceivers, and NICs Acknowledging Alerts Launching the Device ViewClosing Alerts Selecting Alert Log Filters First Time Installation InformationFiltering Alerts Sorting Alerts Filtering by Device Selecting Alert Log Filters TopologyFiltering by Alert State Filtering by Alert Severity Selecting Alert Log Filters Search Selecting Alert Log Filters Custom GroupsClick on the + or boxes to add or remove search criteria Search Configuring Action on Alerts Configure Actions on Alerts Deleting Closed Alerts Alerts Listing Devices Networking Devices Communication from the list Configuring Polling Device Communication Settings Selecting Actions for Devices SNMP/Trap Configuration Thresholds Dialog Box Device Topology Topology of Networking Devices Write in order for your devices to be mapped Node Port Table When a link has been clicked on, it is no longer blueCustom Groups Custom Groups Searching for Devices Search Networking Devices Creating Groups Group Policies Members of a group Viewing the Devices in a GroupGroup Policies Modifying a Group Adding a Group Adding a Device to a Group Group Configuration Modify Group Changing the Group Name Removing a Device from a Group Main Configuration Policies Configuring Group Policies Snmp System Information General Configuration Policies Checking Firmware Versions Alert Configuration Policies Sending Alerts to the HP TopTools Management Station Setting Fault SensitivityRemoving Trap Receivers Advanced Switch Features Automatic Broadcast Control ABC Advanced Switch Features Enabling Broadcast Control for IPX Enabling Broadcast Control for IP Internet Group Management Protocol Igmp Automatic IP Gateway Configuration Forward with High Priority Security Configuration PoliciesSpanning Tree Protocol Communities Security Policies Adding a Community Adding or Deleting an Authorized Manager Configuring Authorized ManagersModifying a Community Deleting a Community Displaying Maps Viewing Your Maps Viewing Your Maps Map Server Settings Automatic Map Generation Default View Map Styles Cluster Size Spacing Launching a Map Launching the Device View Using the Panner Options-Labeling SNMP/Trap ConfigurationOptions for Displaying Maps Options Refresh Maps Changing Map Views Locating a NodeOptions-Legend Monitor Viewing Your Maps Monitoring Network Traffic Using Traffic Monitor Monitoring Network Traffic Traffic Monitor Main Reading the Segment Histogram Reading the Traffic Information Gauges Selecting Segment Groups and Segments Setting ThresholdsComparing Segments Across Different Medias Thresholds Window Displaying the Network Meter Options Button Who Are the Top 5 Talkers? Top 5 Talkers Other Top Talkers Not in Selected Minute Data sampler for this segment OthersTop5 View Menu Items Locating a Segment or End Node Traffic Data Collector Settings Manual Monitoring Automatic MonitoringDiscovery/Topology Data Automatic is checked Remove All Devices Configuring Ports for Manual MonitoringAdding Ports for Manual Monitoring Removing Selected Devices Traffic Data Storage Traffic Data Collector Storage Settings Traffic Data Collector Performance Traffic Data Collector Performance Troubleshooting Traffic Monitor Connection to Server Lost Monitoring Network Traffic Meeting the Challenges Planning for Network GrowthThis chapter includes the following topics Planning with the Network Performance Advisor Using Network ToolsPlanning for Network Growth 10-3 Starting the Network Performance Advisor Welcome Page for Network Performance Advisor Creating a New Report Report Generation Page of Network Performance Advisor Modifying Your Settings 10-6 To cancel a report, click on the Cancel analysis buttonWorsen network performance during periods of normal use You can only create one report at a time Report Properties Section Viewing a Report With Data Available Summary of Recommendations Section 10-9 Reorganize Your Current Equipment Recommendation Details Section 10-11 How the Data is Analyzed Add or Upgrade EquipmentDividing Segments into Workgroups Traffic pattern before dividing into workgroups 10-14 Traffic Pattern after Dividing into Workgroups Dedicating Bandwidth to Top Talkers Converting Segments to Desktop SwitchingTop Conversations Upgrading Segments to Faster Speed Media Top Conversations 10-17 Inventory of End Nodes May not be valid When There Are No RecommendationsAdministration Controlling Data Storage Collects Data How the Network Performance AdvisorUnderstanding HP Sampling 10-20 Potential Problems with Data Collection Segments that do not have Devices with Sampling Capability Segments Excluded from AnalysisSegments not Selected for Analysis Overview Quality of Service Switch using the switchs web browser or console interface HP Procurve Switch 8000MHP Procurve Routing Switch 9308M and 9304M HP Procurve Routing Switch 6308M-SX and 6208M-SX HP TopTools QoS operates on two levels as described below Basic Operation11-3 Configuring QoS for Specific Devices IP Addresses Viewing All Currently Configured QoS Policies Adding a Policy for an IP Address Adding a Policy for a Specific IP Address ToS Configuration Options Configuring a QoS Policy for IP Type Service ToS11-6 Outbound ToS Option Procurve Differentiated ServicesSwitch Ports 11-7 Vlan How To Configure a ToS Policy DECNet AppleTalk Configuring a QoS Policy for Specific Protocols QoS Policy for a Specific Protocol Click on the Return button to return to the Main QoS Configuring a QoS Policy for a Specific 11-12 Device Management Features Accessing Hub Features Viewing Device Identity Information Accessing Hub Features12-2 Reading the Performance Gauges Interpreting Device Status Performance Gauges for a Hub Gauge Attributes Switching Hub Global CountersGlobal Counters Hub Global Counters Counter Description Counters are described in the following tableGlobal Counters 12-6 Port Counters Configuring Your DeviceSee the online help for information on each counter Hub Device View Fault Detection System Information Configuring IP Switching Hub IP Configuration Hub IP Configuration12-10 Port Information Port ConfigurationSetting Description Information is described in the following table Backup Links Bridge Enable/Disable Backup Link Parameters Configuring Load Balancing-Switching HubsParameter Description Select Technical Support Support URL 12-15 12.The Support 12-16 This chapter has information on Managing SwitchesDisplaying Switch Status Status Overview Graph Area Managing Switches Alert Log Area Port Status Port Status Settings Port Status settings are described in the following table13-4 Identity Page for HP Switch 800T Switch Identity Information Device View Configuring Switch Features Device View for the HP Procurve Switch 2424M Characteristics of Bootp and Dhcp IP Configuration 13-9 Help for that device Port Settings Class of Service13-10 13-11 Using VLANs to Maximize the CoS BenefitIs, CoS enables you to When it is received on the switch Basic Operation Definitions13-12 QoS Setting Outbound Port Queue Operation Default Vlan as a tagged VlanCoS Priority Tagged Vlan TopTools Switch QueuesCriteria for Prioritizing Outbound Packets Priority Mapping Table Guidelines for Configuring CoS Priorities Steps for Configuring CoS PriorityPriority Criteria and Precedence 13-16 Assigning a Monitoring Port Monitoring Selected Ports on a Switch Setting Device Features HP Procurve Stack Management 11.Configuration Page for HP 8000M as Commander of a Stack Stack Management with VLANs Vlan ConfigurationBenefits of Stack Management Removing a Vlan Enabling VLANsAdding a Vlan Renaming a Vlan Enabling Gvrp Security Modifying Port Vlan ConfigurationConfirm removal of the Vlan Support URL Support/Management URLs13-23 13-24 Management Server URL Device Passwords Setting Up Security for a Device Setting Up Security for a Device Manager/Operator Password Combinations Passwords Read Write Results Protected Password SettingsFunction of Community Names Set Snmp Community Names This improves the Discovery process Configuring for Community NamesSelect the Additional Devices tab Run Discovery again Hub Port Security Address Selection Authorized Address Send AlarmEavesdrop Prevention Disable Port Setting Security Policy for Selected Ports14-9 Hub Intrusion Log Setting the Security Policy for Selected Ports Basic Operation Switch Port Security Port Security Control Parameters Configuring Port Security-Planning 14-13 Learn Mode 14-14 Configuring Authorized IP Managers 14-15 Access LevelsOverview of IP Mask Operation Defining Authorized Management Stations Enter an Authorized Manager IP address Configuring Port Security Port Security Overview Select Yes to Prevent Eavesdropping Switch Intrusion LogClick on the Apply Changes button 10.Security Violation Entries in the Alert Log How the Intrusion Log Operates Keeping the Intrusion Log Current by Resetting FlagsOperating Notes for Port Security Identifying the IP Address of an Intruder Security Violations Proxy Web Servers 14-22 Performing a Ping/Link Test Performing Diagnostics Performing Diagnostics Rebooting a Device Device Reboot Resetting a Hub to Factory Default Settings 15-4 Resetting a Switch 15-5 Producing a Configuration Report 15-6 HP Procurve Switches HP Procurve Hubs Other HP Switches Software Update UtilityDownloading Software Actions button and select Update Firmware Starting the Software Update UtilityDownloading Software 16-3 Obtaining the Software from the Web Accepting the Licensing Agreement Software updates are downloaded to 16-5 Scheduling the Software Update Downloading Software Alert Log Showing Successful Software Update Obtaining New Software from HP HP Download ManagerDevice types Download Control Make sure you leave the CD in the drive Time, and click OK New software version data How to Update the Map Files16-11 16-12 Appendix a contains the following topics Appendix aAgent Firmware Versions Verifying Device Agent Versions IP Networks Preparing Network DevicesDevice Network Addresses IPX Networks Globally Assigned IP Network Addresses Configuring IP Parameters T e Network Bootp Server Appendix a Index-1 Index Index-2 Full Network button … Index-3 Index-4 Index-5 Index-6 Index-7 Index-8 Undo Last Load Balancing … 12-13 Update Discovery …