Appendix
C:
Glossary
Intelinet
48
‐
Port
Gigabit
Ethernet
PoE+
Managed
Switch
User
Manual
|
345
IP
Source
Guard
IP
Source
Guard
is
a
secure
feature
used
to
restrict
IP
traffic
on
DHCP
snooping
untrusted
ports
by
filtering
traffic
based
on
the
DHCP
Snooping
Table
or
manually
configured
IP
Source
Bindings.
It
helps
prevent
IP
spoofing
attacks
when
a
host
tries
to
spoof
and
use
the
IP
address
of
another
host.
L
LACP
LACP
is
an
IEEE
802.3ad
standard
protocol.
The
L
ink
A
ggregation
C
ontrol
P
rotocol,
allows
bundling
several
physical
ports
together
to
form
a
single
logical
port.
LLC
The
IEEE
802.2
L
ogical
L
ink
C
ontrol
(LLC)
protocol
provides
a
link
mechanism
for
upper
layer
protocols.
It
is
the
upper
sub
‐
layer
of
the
Data
Link
Layer
and
provides
multiplexing
mechanisms
that
make
it
possible
for
several
network
protocols
(IP,
IPX)
to
coexist
within
a
multipoint
network.
LLC
header
consists
of
1
byte
DSAP
(Destination
Service
Access
Point),
1
byte
SSAP
(Source
Service
Access
Point),
1
or
2
bytes
Control
field
followed
by
LLC
information.
LLDP
LLDP
is
an
IEEE
802.1ab
standard
protocol.
The
L
ink
L
ayer
D
iscovery
P
rotocol
(LLDP)
specified
in
this
standard
allows
stations
attached
to
an
IEEE
802
LAN
to
advertise,
to
other
stations
attached
to
the
same
IEEE
802
LAN,
the
major
capabilities
provided
by
the
system
incorporating
that
station,
the
management
address
or
addresses
of
the
entity
or
entities
that
provide
management
of
those
capabilities,
and
the
identification
of
the
stations
point
of
attachment
to
the
IEEE
802
LAN
required
by
those
management
entity
or
entities.
The
information
distributed
via
this
protocol
is
stored
by
its
recipients
in
a
standard
Management
Information
Base
(MIB),
making
it
possible
for
the
information
to
be
accessed
by
a
Network
Management
System
(NMS)
using
a
management
protocol
such
as
the
Simple
Network
Management
Protocol
(SNMP).
LLDP
‐
MED
LLDP
‐
MED
is
an
extension
of
IEEE
802.1ab
and
is
defined
by
the
telecommunication
industry
association
(TIA
‐
1057).
LLQI
LLQI
(Last
Listener
Query
Interval)
is
the
maximum
response
time
used
to
calculate
the
Maximum
Response
Code
inserted
into
Specific
Queries.
It
is
used
to
detect
the
departure
of
the
last
listener
for
a
multicast
address
or
source.
In
IGMP,
this
term
is
called
LMQI
(Last
Member
Query
Interval).
LOC