Chapter
3:
Web
Management
Security
‐
AAA
Intelinet
48
‐
Port
Gigabit
Ethernet
PoE+
Managed
Switch
User
Manual
|
114
3.1.5.14.
Security
‐
AAA
Common
Server
Configuration
These
setting
are
common
for
all
of
the
Authentication
Servers.
Timeout
The
Timeout,
which
can
be
set
to
a
number
between
3
and
3600
seconds,
is
the
maximum
time
to
wait
for
a
reply
from
a
server.
If
the
server
does
not
reply
within
this
time
frame,
we
will
consider
it
to
be
dead
and
continue
with
the
next
enabled
server
(if
any).
RADIUS
servers
are
using
the
UDP
protocol,
which
is
unreliable
by
design.
In
order
to
cope
with
lost
frames,
the
timeout
interval
is
divided
into
3
subintervals
of
equal
length.
If
a
reply
is
not
received
within
the
subinterval,
the
request
is
transmitted
again.
This
algorithm
causes
the
RADIUS
server
to
be
queried
up
to
3
times
before
it
is
considered
to
be
dead.
Dead
Time
The
Dead
Time,
which
can
be
set
to
a
number
between
0
and
3600
seconds,
is
the
period
during
which
the
switch
will
not
send
new
requests
to
a
server
that
has
failed
to
respond
to
a
previous
request.
This
will
stop
the
switch
from
continually
trying
to
contact
a
server
that
it
has
already
determined
as
dead.
Setting
the
Dead
Time
to
a
value
greater
than
0
(zero)
will
enable
this
feature,
but
only
if
more
than
one
server
has
been
configured.