metrotek Bercut-ET, Руководство по эксплуатации

Страница: 60 / 116

60 Analysis. Typical tasks and solutions
– if port A and port B are in the same network (network parts
of IP address are equal) ping will be sent from port A.
– if port A and port B are in the different networks ping will
be sent from the port that is located in the same network as
DUT.
– if port A, port B and DUT are in the different networks ping
will be sent from port that is located in the same network as
gateway
10
.
• IP address — IP address of the host.
• Max hops — maximum number of routers that packets can be
transmitted through.
• Packet size — size of payload in transmitted frame, in bytes.
• Timeout — period of time between two successive requests (if
there was no response for the first request).
4. Press button ( Start ) to start the test. The following information
will be displayed on the screen:
•
hop number;
•
IP address of the transitional host;
•
response waiting time.
If response waiting time is more than timeout ”
∗
” will be displayed in
the test results row.
Test result example is shown on the fig. 5.62.
Figure 5.62. Traceroute test results
5.12.3 DNS (DNS lookup)
DNS (Domain Name System) — distributed database that is able to de-
termine an IP address of a network host upon a request with the host domain
10
Gateway IP address is set in the Network setup menu
Bercut-ET. Operations manual