Appendix
C:
Glossary
Intelinet
48
‐
Port
Gigabit
Ethernet
PoE+
Managed
Switch
User
Manual
|
347
MVR
Multicast
VLAN
Registration
(MVR)
is
a
protocol
for
Layer
2
(IP)
‐
networks
that
enables
multicast
‐
traffic
from
a
source
VLAN
to
be
shared
with
subscriber
‐
VLANs.
The
main
reason
for
using
MVR
is
to
save
bandwidth
by
preventing
duplicate
multicast
streams
being
sent
in
the
core
network,
instead
the
stream(s)
are
received
on
the
MVR
‐
VLAN
and
forwarded
to
the
VLANs
where
hosts
have
requested
it/them
(Wikipedia).
N
NTP
NTP
is
an
acronym
for
N
etwork
T
ime
P
rotocol,
a
network
protocol
for
synchronizing
the
clocks
of
computer
systems.
NTP
uses
UDP
(datagrams)
as
transport
layer.
O
Optional
TLVs.
A
LLDP
frame
contains
multiple
TLVs
For
some
TLVs
it
is
configurable
if
the
switch
shall
include
the
TLV
in
the
LLDP
frame.
These
TLVs
are
known
as
optional
TLVs.
If
an
optional
TLVs
is
disabled
the
corresponding
information
is
not
included
in
the
LLDP
frame.
OUI
OUI
is
the
organizationally
unique
identifier.
An
OUI
address
is
a
globally
unique
identifier
assigned
to
a
vendor
by
IEEE.
You
can
determine
which
vendor
a
device
belongs
to
according
to
the
OUI
address
which
forms
the
first
24
bits
of
a
MAC
address.
P
PCP
PCP
is
an
acronym
for
P
riority
C
ode
P
oint.
It
is
a
3
‐
bit
field
storing
the
priority
level
for
the
802.1Q
frame.
It
is
also
known
as
User
Priority.
PD
PD
is
an
acronym
for
P
owered
D
evice.
In
a
PoE
system
the
power
is
delivered
from
a
PSE
(power
sourcing
equipment)
to
a
remote
device.
The
remote
device
is
called
a
PD.
PHY
PHY
is
an
abbreviation
for
Physical
Interface
Transceiver
and
is
the
device
that
implement
the
Ethernet
physical
layer
(IEEE
‐
802.3).
