PoE
AP
Router
127
2.8
QoS
The
total
amount
of
data
traffic
increases
nowadays
as
the
higher
demand
of
mobile
applications,
like
Game
/
Chat
/
VoIP
/
P2P
/
Video
/
Web
access.
In
order
to
pose
new
requirements
for
data
transport,
e.g.
low
latency,
low
data
loss,
the
entire
network
must
ensure
them
via
a
connection
service
guarantee.
The
main
goal
of
QoS
(Quality
of
Service)
is
prioritizing
incoming
data,
and
preventing
data
loss
due
to
factors
such
as
jitter,
delay
and
dropping.
Another
important
aspect
of
QoS
is
ensuring
that
prioritizing
one
data
flow
doesn’t
interfere
with
other
data
flows.
So,
QoS
helps
to
prioritize
data
as
it
enters
your
router.
By
attaching
special
identification
marks
or
headers
to
incoming
packets,
QoS
determines
which
queue
the
packets
enter,
based
on
priority.
This
is
useful
when
there
are
certain
types
of
data
you
want
to
give
higher
priority
to,
such
as
voice
packets
given
higher
priority
than
Web
data
packets.
To
utilize
your
network
throughput
completely,
administrator
must
define
bandwidth
control
rules
carefully
to
balance
the
utilization
of
network
bandwidth
for
all
users
to
access.
It
is
indeed
required
that
an
access
gateway
satisfies
the
requirements
of
latency
‐
critical
applications,
minimum
access
right
guarantee,
fair
bandwidth
usage
for
same
subscribed
condition
and
flexible
bandwidth
management.
AMIT
Security
Gateway
provides
a
Rule
‐
based
QoS
to
carry
out
the
requirements.
2.8.1
QoS
Configuration
This
gateway
provides
lots
of
flexible
rules
for
you
to
set
QoS
policies.
Basically,
you
need
to
know
three
parts
of
information
before
you
create
your
own
policies.
First,
“who”
needs
to
be
managed?
Second,
“what”
kind
of
service
needs
to
be
managed?
The
last
part
is
“how”
you
prioritize.
Once
you
have
this
information,
you
can
continue
to
learn
functions
in
this
section
in
more
detail.
QoS
Rule
Configuration
When
you
want
to
add
a
new
QoS
rule
or
edit
one
already
existed,
the
"QoS
Rule
Configuration"
window
shows
up
for
you
to
configure.
The
parameters
in
a
rule
include
the
applied
WAN
interfaces,
the
dedicated
host
group
based
on
MAC
address
or
IP
address,
the
dedicated
kind
of
service
packets,
the
system
resource
to
be
distributed,
the
corresponding
control
function
for
your
specified
resource,
the
packet
flow
direction,
the
sharing
method
for
the
control
function,
the
integrated
time
schedule
rule
and
the
rule
activation.
Following
diagram
illustrates
how
to
organize
a
QoS
rule.
