<s>
In	O
computer	B-Architecture
networks	I-Architecture
,	O
network	B-Protocol
traffic	I-Protocol
measurement	I-Protocol
is	O
the	O
process	O
of	O
measuring	O
the	O
amount	O
and	O
type	O
of	O
traffic	O
on	O
a	O
particular	O
network	O
.	O
</s>
<s>
Iperf	B-Language
)	O
are	O
more	O
intrusive	O
but	O
are	O
arguably	O
more	O
accurate	O
.	O
</s>
<s>
Some	O
tools	O
measure	O
traffic	O
by	O
sniffing	B-Protocol
and	O
others	O
use	O
SNMP	B-Protocol
,	O
WMI	B-Library
or	O
other	O
local	O
agents	O
to	O
measure	O
bandwidth	O
use	O
on	O
individual	O
machines	O
and	O
routers	O
.	O
</s>
<s>
However	O
,	O
the	O
latter	O
generally	O
do	O
not	O
detect	O
the	O
type	O
of	O
traffic	O
,	O
nor	O
do	O
they	O
work	O
for	O
machines	O
which	O
are	O
not	O
running	O
the	O
necessary	O
agent	B-General_Concept
software	I-General_Concept
,	O
such	O
as	O
rogue	O
machines	O
on	O
the	O
network	O
,	O
or	O
machines	O
for	O
which	O
no	O
compatible	O
agent	O
is	O
available	O
.	O
</s>
