Discovery Agent Fails to Connect to the Server | NETGEAR NMS100

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

5-3

September 2004 202-10058-01

Image 51

NETGEAR NMS100 manual Discovery Agent Fails to Connect to the Server, Incorrect or Missing Community Names

Contents

NETGEAR, Inc September 2004 Trademarks 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 Features Recommended system requirements Device Access ModesProSafe Network Management System System Requirements Package Contents Introduction Introduction Installing the ProSafe NMS Server and Local Console Chapter Installation and Startup Starting the ProSafe NMS Server and Local Console Installing the Air Messenger Pro Paging Software Disabling 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 Tool Zoom to Console Button Commands Selection Tab Description Selection ToolEvent Log Tool Selection Tool tabs View Window Area Installation and Startup Map Selection Tree Working with the Map Database Rectangle Using Map View WindowsView All Zoom Out Zoom Moving Objects at the Root Level Moving Map Objects Automatically arranged and manually arranged submap levels Moving Objects Inside Subnet Levels Moving Objects from One Subnet to Another Attributes Changing Object Properties Access Parameters Object Properties Access tabAttribute Name Description Type-Dependent Attributes Object Attribute Name Description Type a Object Properties Attribute tab Adding Map Objects Object TypesType Description Viewing Device MIB Data MIB Selection TreeManage Menus Custom Menus Table Display Elements Graph Styles Graph Display Elements Creating a New Report Saving Long-term Statistics Viewing Trend Data in a Graph Window Limiting Saved Instances Setting Threshold Alarms Threshold AlarmsAlarm Type Description Configuring Automatic Alarms Setting Status Variable Polling Setting Manual Threshold Alarms Polling TCP Application Services Discovery of Four Built-in ServicesTCP Service Polling Managing Polling for the Device Custom TCP Service Polling To modify an existing Custom TCP Service definition Emailing or Paging the Administrator on an Event Then, 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 Users Then, 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 Solutions Incorrect or Missing Community Names Discovery Agent Fails to Connect to the Server Snmp 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 Protocol Gateway IP AddressInternet Protocol Mbps Lightweight Directory Access ProtocolLocal area network MAC address Perfect Forward Secrecy NetBIOSNetwork Address Translation Packet Router PPPoEPPP over ATM PPP over Ethernet Subnet Mask Wide area network Wi-Fi Windows Internet Naming ServiceUniversal Plug and Play WEB Proxy Server Wireless Network Name Ssid Index Index Index