Modbus
Cellular
Gateway
51
3.1.5
Load
Balance
When
there
aremultiple
WAN
interfaces,
and
when
the
bandwidth
of
one
WAN
connection
is
not
enough
for
the
traffic
loads
from
the
Intranet
to
the
Internet,
the
WAN
load
balance
function
can
be
considered
to
enlarge
the
total
WAN
bandwidth.
Load
Balance
Strategy
There
are
three
optional
strategies
for
load
balance:
“By
Smart
Weight”
,
“
By
Specific
Weight”
,
and
“
By
User
Policy”
.
Administrator
can
select
strategy
according
to
application
requirement
and
environment
status.
The
strategies
are
explained
as
below.
By
Smart
Weight
If
based
on
"By
Smart
Weight"
strategy,
gateway
will
take
the
line
speed
settings
of
all
WAN
interfaces
specified
in
"Physical
Interface"
configuration
page
as
default
ratio
for
data
transfer.
Based
on
the
ratio
of
packet
bytes
via
these
WAN
interfaces
in
past
period
(maybe
5
minutes),
system
decides
how
many
sessions
will
be
transferred
via
each
WAN
interface
for
next
period.
Administrator
may
take
it
as
a
fast
approach
to
maximize
the
bandwidth
utilization
of
multiple
WAN
interfaces
in
gateway