Exfo ETS-1000G Manual de usuario Pagina 81

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TCP/IP Tests
10 Gigabit Ethernet Analyzer 71
DNS Lookup
If the timeout for receiving a response from an intermediate node has
expired, the asterisk character (*) will be displayed in the
line containing
results. An example of test results is shown in the following image.
DNS Lookup
The DNS lookup tool allows detecting faults in the operation of NS servers.
The Domain Name System (DNS) is a distributed database that provides a
node's IP address according to the request containing its domain name.
To perform the test, follow the procedure below:
1. Connect the device to the network under test according to the diagram
shown in this chapter.
2. Set up a network connection (refer to Network Parameters on
page 103).
3. Open the DNS menu.
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