Chapter
3:
Web
Management
LLDP
‐
LLDP
‐
MED
Intelinet
48
‐
Port
Gigabit
Ethernet
PoE+
Managed
Switch
User
Manual
|
155
3.1.12.2.
LLDP
‐
LLDP
‐
MED
This
page
allows
you
to
configure
the
LLDP
‐
MED.
This
function
applies
to
VoIP
devices
which
support
LLDP
‐
MED.
Fast
start
repeat
count
Fast
start
repeat
count
Rapid
startup
and
Emergency
Call
Service
Location
Identification
Discovery
of
endpoints
is
a
critically
important
aspect
of
VoIP
systems
in
general.
In
addition,
it
is
best
to
advertise
only
those
pieces
of
information
which
are
specifically
relevant
to
particular
endpoint
types
(for
example
only
advertise
the
voice
network
policy
to
permitted
voice
‐
capable
devices),
both
in
order
to
conserve
the
limited
LLDPU
space
and
to
reduce
security
and
system
integrity
issues
that
can
come
with
inappropriate
knowledge
of
the
network
policy.
With
this
in
mind
LLDP
‐
MED
defines
an
LLDP
‐
MED
Fast
Start
interaction
between
the
protocol
and
the
application
layers
on
top
of
the
protocol,
in
order
to
achieve
these
related
properties.
Initially,
a
Network
Connectivity
Device
will
only
transmit
LLDP
TLVs
in
an
LLDPDU.
Only
after
an
LLDP
‐
MED
Endpoint
Device
is
detected,
will
an
LLDP
‐
MED
capable
Network
Connectivity
Device
start
to
advertise
LLDP
‐
MED
TLVs
in
outgoing
LLDPDUs
on
the
associated
port.
The
LLDP
‐
MED
application
will
temporarily
speed
up
the
transmission
of
the
LLDPDU
to
start
within
a
second,
when
a
new
LLDP
‐
MED
neighbor
has
been
detected
in
order
share
LLDP
‐
MED
information
as
fast
as
possible
to
new
neighbors.
Because
there
is
a
risk
of
an
LLDP
frame
being
lost
during
transmission
between
neighbors,
it
is