5.12 Testing TCP/IP
57
name. DNS lookup feature
allows to detect errors in NS-servers operation.
DNS lookup test is performed for specified domain name. If requested IP
address cannot be retrieved, all bits in IP address will be set to null.
Figure 5.59. DNS lookup test settings
•
Host
— name of host, IP address of which should be determined.
•
IP
— IP address of the host, named above, determined during the test.
5.12.4
ARP monitor
ARP monitor utility allows to observe ARP replies that are transmitted in
the network and to get the IP and MAC addresses they contain. This data
form the table (see fig. 5.60).
Figure 5.60. ARP monitor screen
If any of entries presented in the table is not updated within one minute,
it will be deleted from the table.
To select port press
button.
9
The option is not included in the basic configuration; should be purchased additionally.
ETS-1000. Operations manual
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