Fluke Network Tester user manual Identifying Key Devices, Troubleshooting Networks

Troubleshooting Networks	5
Finding Out About Your Network

This screen also tells you which VLAN NetTool is connected to. If CDP information is found, it is also reported on this screen.

Note

The Segment ID screen is identical to the Addresses Used screen documented in Chapter

4.For information on VLANs and CDP, see “Obtaining a Device’s IP Address Information” in Chapter 4.

Identifying Key Devices

To find out what servers, routers, and printers are available on the network segment, do the following:

1.From the Main menu, select Key Devices to display the Key Devices screen (Figure 5-3):

Use this information to verify whether a device is seen on the network. If there is a configuration problem, this list can help you pinpoint where the problem exists.

NetTool always attempts to display the highest level address possible for a device, be it a NetBIOS name, DNS name, IP address or Mac address. This helps you determine which services or servers exist on the network.

2.Select any key device to view specific information (for example, its IP address and subnet mask).

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Figure 5-3. Key Devices Screen

5-3