49
distance
of
all
Westermo
SFP
transceiver
family.
If
you
see
Unknown
info,
it
may
mean
that
the
vendor
doesn’t
provide
their
information
or
that
the
information
of
their
transceiver
can’t
be
read.
2.
If
the
plugged
DDM
SFP
transceiver
is
not
certified
by
Westermo,
the
DDM
function
will
not
be
supported.
But
the
communication
will
not
be
disabled.
4.3.3
Rate
Control
Rate
limiting
is
a
form
of
flow
control
used
to
enforce
a
strict
bandwidth
limit
at
a
port.
You
can
program
separate
transmit
(Egress
Rule)
and
receive
(Ingress
Rule)
rate
limits
at
each
port,
and
even
apply
the
limit
to
certain
packet
types
as
described
below.
Figure
shows
you
the
Limit
Rate
of
Ingress
and
Egress.
You
can
type
the
volume
step
by
64Kbps
in
the
blank.
4.3.4
Storm
Control
The
Storm
Control
is
similar
to
Rate
Control.
Rate
Control
filters
all
the
traffic
over
the
threshold
you
input
by
User
Interface.
Storm
Control
allows
user
to
define
the
rate
for
specific
Packet
Types.
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