NETGEAR NMS100 manual Discovery Agent Fails to Connect to the Server

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Reference Manual for the ProSafe Network Management System NMS100

Discovery Agent Fails to Connect to the Server

Look at the Current tab of the Event Log Tool. If you do not see the Event Log Tool, use the View/ Event Log Tool to show it. Scroll to the top of the event log. You should see an entry that says DISCOVERY/STATUS AGENT CONNECTED TO SERVER. Also, use the Config/Discovery-Polling menu. You should see an entry in the list at the left for your system IP address and the status should be connected. If these two things are not true then the discovery agent has not properly connected to the server.

ProSafe NMS uses TCP/IP to communicate between different components. This can conflict with other software running on your system. Look for any other management applications or Windows services and stop them (for example, Windows SNMP Trap Service). Try installing on a different system that has less software installed to help identify the conflicting software. This is a rare failure case.

Incorrect or Missing Community Names

Each SNMP V1 device uses a Read Community password for SNMP access. This is typically set to public when the device is installed but in most cases your network administrator has changed the community name. Furthermore, many different community names may be in use on your network.

1.Determine what community names are used in your network devices.

2.Use the Config/Discovery-Polling menu.

3.Select your system address in the agents list.

4.Click the Comm tab.

5.For each community name, click the Add button. Set the Read Access Mode and Read/Write Access Mode to SNMP V1 and set Read Community and Read/Write Community to valid community names

6.Click OK.

7.Use the File/Reset menu to delete the discovered map and restart discovery.

Troubleshooting and Advanced Configuration

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September 2004 202-10058-01

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Contents NETGEAR, Inc September 2004Trademarks Statement of ConditionsCustomer Support World Wide Web Contents Chapter Data and Statistics Appendix a Contents Audience, Scope, Conventions, and Formats Typographical ConventionsManual Scope Overview Other ProSafe NMS FeaturesRecommended system requirements Device Access ModesProSafe Network Management System System RequirementsPackage Contents Introduction Introduction Installing the ProSafe NMS Server and Local Console Chapter Installation and StartupStarting the ProSafe NMS Server and Local Console Installing the Air Messenger Pro Paging SoftwareDisabling Automatic Console Login Starting a Local Console SessionStopping and Starting the Server Element Function Console ElementsMain button bar Edit button bar Selection Tool Event Log ToolZoom to Console Button CommandsSelection Tab Description Selection ToolEvent Log Tool Selection Tool tabsView Window Area Installation and Startup Map Selection Tree Working with the Map DatabaseRectangle Using Map View WindowsView All Zoom Out ZoomMoving Objects at the Root Level Moving Map ObjectsAutomatically arranged and manually arranged submap levels Moving Objects Inside Subnet LevelsMoving Objects from One Subnet to Another Attributes Changing Object PropertiesAccess Parameters Object Properties Access tabAttribute Name Description Type-Dependent Attributes Object Attribute Name Description Type a Object Properties Attribute tabAdding Map Objects Object TypesType Description Viewing Device MIB Data MIB Selection TreeManage Menus Custom Menus Table Display ElementsGraph Styles Graph Display ElementsCreating a New Report Saving Long-term StatisticsViewing Trend Data in a Graph Window Limiting Saved Instances Setting Threshold Alarms Threshold AlarmsAlarm Type Description Configuring Automatic Alarms Setting Status Variable PollingSetting Manual Threshold Alarms Polling TCP Application Services Discovery of Four Built-in ServicesTCP Service Polling Managing Polling for the Device Custom TCP Service PollingTo modify an existing Custom TCP Service definition Emailing or Paging the Administrator on an EventThen, set the Email/Paging global event options Add an Event Filter for the pollDeviceDown event Then, set the Email/Page event actions Other Event Types ProSafe NMS EventsEvent Subtree Trap Name Description First, add a grouped set of users Emailing or Paging Multiple UsersThen, add an Event Filter for the selected devices Troubleshooting Network Discovery Duration of Network DiscoveryNormal Discovery Map Layout Sample top-level and Subnet Map views for a small network Failure Symptoms and SolutionsIncorrect or Missing Community Names Discovery Agent Fails to Connect to the ServerSnmp Device Access Control List Firewalls Block Snmp OperationsNot Enough Seeds Setting Up New Filters Broadcast Packet LossesLimiting the Scope of Discovery Stopping Discovery Auto-Layout Event Parameters Event ParametersEvent Description Parameters Set Community name of the target device List of Glossary Terms Denial of Service attack Auto UplinkCat Domain Name DoS Dynamic Host Configuration ProtocolGateway IP AddressInternet Protocol Mbps Lightweight Directory Access ProtocolLocal area network MAC addressPerfect Forward Secrecy NetBIOSNetwork Address Translation PacketRouter PPPoEPPP over ATM PPP over EthernetSubnet Mask Wide area network Wi-Fi Windows Internet Naming ServiceUniversal Plug and Play WEB Proxy ServerWireless Network Name Ssid Index Index Index