TOPEX Bytton (HSPA+ / LTE)
ByttonLTE(full)_genericUsermanual_sw306FAS_revN.1.docx
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Network test
You can issue PING commands to different addresses, trace the route to a specified IP, or send other
network commands.
The results are always shown in the upper pane, called “Test”:
For instance, you may PING
different destination IP addresses
(the default 127.0.0.1 is the
loopback), specifying the number of
test packets (5 in this example) and
the size of their data payload, in
bytes (55 data bytes in this
example).
When you choose the value “zero” for the payload, the packets will by instead eight bytes long:
PING 127.0.0.1 (127.0.0.1): 0 data bytes
8 bytes from 127.0.0.1: seq=0 ttl=64
8 bytes from 127.0.0.1: seq=1 ttl=64
8 bytes from 127.0.0.1: seq=2 ttl=64
8 bytes from 127.0.0.1: seq=3 ttl=64
--- 127.0.0.1 ping statistics ---
4 packets transmitted, 4 packets received, 0% packet loss
The longer the data packets sent, the higher propagation delay you will see:
PING 127.0.0.1 (127.0.0.1): 14000 data bytes
14008 bytes from 127.0.0.1: seq=0 ttl=64 time=1.731 ms
14008 bytes from 127.0.0.1: seq=1 ttl=64 time=1.293 ms
14008 bytes from 127.0.0.1: seq=2 ttl=64 time=1.245 ms
14008 bytes from 127.0.0.1: seq=3 ttl=64 time=1.343 ms
14008 bytes from 127.0.0.1: seq=4 ttl=64 time=1.248 ms
--- 127.0.0.1 ping statistics ---
5 packets transmitted, 5 packets received, 0% packet loss
round-trip min/avg/max = 1.245/1.372/1.731 ms
PING 127.0.0.1 (127.0.0.1): 48000 data bytes
48008 bytes from 127.0.0.1: seq=0 ttl=64 time=5.103 ms
48008 bytes from 127.0.0.1: seq=1 ttl=64 time=4.125 ms
48008 bytes from 127.0.0.1: seq=2 ttl=64 time=8.758 ms
--- 127.0.0.1 ping statistics ---
3 packets transmitted, 3 packets received, 0% packet loss
round-trip min/avg/max = 4.125/5.995/8.758 ms
When both addresses are in the local networ, the time of waiting for the answer is short:
PING 127.0.0.1 (127.0.0.1) from 192.168.1.148: 31 data bytes
39 bytes from 127.0.0.1: seq=0 ttl=64 time=0.572 ms
39 bytes from 127.0.0.1: seq=1 ttl=64 time=0.374 ms
39 bytes from 127.0.0.1: seq=2 ttl=64 time=0.374 ms
--- 127.0.0.1 ping statistics ---
3 packets transmitted, 3 packets received, 0% packet loss
round-trip min/avg/max = 0.374/0.440/0.572 ms
The results are displayed in the upper panel, in the example below for four packets of 455 data bytes each
(463 bytes overall length) – response and propagation delay.
When you repeat the test another time, the results are close, but the response time are not exactly
identical :
