NETGEAR NMS100 manual Troubleshooting Network Discovery, Duration of Network Discovery

Chapter 5 Troubleshooting and Advanced Configuration

Troubleshooting Network Discovery

Duration of Network Discovery

During the ProSafe NMS Server installation you entered the address, netmask, and community name for one SNMP V1 discovery seed device. This is normally enough information to discover most of your network. When you first start ProSafe NMS it will take several minutes for discovery to start adding objects to the map. Use the Root Subnet button to display the top-level Map view.

If you used the Disable Discovery on Startup option of the installation, discovery will not be running when you first start ProSafe NMS. In this case, you need to set discovery filters before proceeding. Please refer to “Limiting the Scope of Discovery” on page 6-5before reading this section.

Normal Discovery Map Layout

Discovery creates a two-level IP Subnet based topology. At the top-level, discovery adds any multi-port devices (routers) and subnet icons for each IP Subnet. Link objects are added between each router and the subnets it is connected to. The map is automatically arranged in a star configuration.

All single-port SNMP devices and ICMP (Ping) devices are added to the second level under each subnet icon, based on the device IP address and subnet mask. A single Bus Network is added to each subnet level, and all devices in the subnet are linked to this network.

Use the Root Subnet button to display the top-level Map view. You should see a mixture of SNMP device icons and subnet icons, connected by links in a star configuration. Double-click on one of the subnet icons. You should see a Bus Network with devices linked to it in a grid configuration.

Troubleshooting and Advanced Configuration 5-1

September 2004 202-10058-01