User Manual

Tech-X Flex
®
(P5) Verizon Base Unit User Guide Rev B PRELIMINARY 3/20/2014
5-9
Intro
Wi-Fi
10/100
System
IP/Video
Specs
CAUTION: You should select the destination for this test carefully. Because it effectively
sends a continuous stream of packets to a single host, it could be construed as
a denial-of-service attack by a third party that does not welcome such traffic.
5.6.2 Results - Packet Loss Test
The test runs indefinitely until manually stopped. Results are reported at approximately 1-second
intervals and are as follows:
Table 5-6 Packet Loss Test results
Measurement Description
# Sent Total number of ping requests sent since the beginning of the test.
# Recv The total number of ping requests that successfully received a reply, as of the end of
the respective reporting interval.
# Lost The total number of ping requests that have not yet received a reply, calculated as:
# Sent - # Received
Note that this number may fluctuate up and down, as a reply may be received in one
interval for a request sent in a previous interval. Therefore, at any given time during
ongoing testing, this number does not necessary represent a count of positively lost
packets, because some may still be in transit. Once a test is terminated, it will wait a
standard amount of time for any lingering requests to be acknowledged and/or time
out, so the count for the final interval will be an accurate count of loss for the entire
test.
% Lost The percent of packets lost since the beginning of the test, calculated as:
# Lost / # Sent
...using the cumulative counts for the respective interval only.
Min
Avg
Max
The minimum, average, and maximum roundtrip times since the beginning of the
test, not necessarily for the respective interval. Because these counts represent the
entire test, the following notes apply:
•The Min value cannot ever increase from one interval to the next, because new
minimums can only reduce the value.
•The Max value follows a similar logic except that it cannot decrease.
•The Avg value may fluctuate based on changing conditions during the testing
process. The longer the test runs, the more likely this value will stabilize as the
number of data points contributing to the calculations continues to increase.