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14 delay variation – EXFO ETS-1000G User Manual

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10 Gigabit Ethernet Analyzer

85

14 Delay Variation

During an analysis of Ethernet-based networks, an important task is to
determine the packet jitter and latency. According to RFC 4689[5], the
packet jitter is the absolute difference of propagation of two successively
received packets which belong to the same data stream. This parameter is
used for evaluating the network's capability to transmit the
deference-sensitive traffic, such as video or voice. Using Delay Variation
option you can measure packet jitter and latency distribution.

ET

The time that has elapsed since the beginning of the test.

RT

The time that is left until the end of the test.

PKTs

The total number of received packets.

OOOPs

The number of packets which have been received in the order that
is different from the order in which they were sent.

%OOOPs

The number of packets which have been received not in the order
in which they were sent; specified as the percentage of the total
number of received packets.

INOPs

The number of packets which have been received in the order in
which they were sent.

%INOPs

The number of packets which have been received in the order in
which they were sent; specified as the percentage of the total num-
ber of received packets.