Innbox PLC500M, Руководство пользователя

Страница: 22 / 24

22/24
InnboxPLC500M-UM-01-EN-020
INN-001
©
Th
e c
o
n
ten
ts
o
f t
h
is
d
o
cu
m
en
t
ar
e
t
h
e p
ro
p
ert
y o
f
Is
kr
at
el
, K
ra
n
j,
Sl
o
ven
ia
, a
n
d
m
ay
n
o
t b
e c
o
p
ied
, r
ep
ro
d
u
ce
d
o
r d
is
cl
o
sed
t
o
a t
h
ir
d
p
ar
ty
w
it
h
o
u
t w
ri
tt
en
c
o
n
sen
t o
f t
h
e o
w
n
er
.
APPENDIX C: ABOUT QOS
PLC 200AV allows for 4 levels of Channel Access Priority (CAP (0 – 3)). The 8 levels of VLAN Ethernet tags must be
mapped to the 4 levels of CAP priority, where CAP 3 is the highest priority and CAP 0 is the lowest. CAP 3 priority
might be used for voice and network management frames, and CAP 2 is used for streaming video and music while CAP
1 and CAP 0 are used for data.
Default CAP
The ‘Default CAP’ group allows for default priority mapping of packets that do not have a VLAN TAG. The settings are
available for Unicast (directed to a host).

IGMP - (default CAP 3) - sets the channel access priority for IGMP frames - these are the group management
frames, not the stream data.

Unicast - (default CAP 1) - sets the default channel access priority for unicast frames not matching any other
classification or mapping.

IGMP managed Multicast Stream (Fixed to CAP 2) - sets the default channel access priority for stream data
belonging to a snooped IGMP multicast group.

Multicast/Broadcast - sets the default CAP for multicast frames not in a snooped group and for broadcast
frames.
The following are the factory default settings for VLAN Tags and TOS Bits:
VLAN Tag User Priority Default CAP Priority TOS Bit User Priority Default CAP Priority
0 CAP1 0 CAP1
1 CAP0 1 CAP0
2 CAP0 2 CAP0
3 CAP1 3 CAP1
4 CAP2 4 CAP2
5 CAP2 5 CAP2
6 CAP3 6 CAP3
7 CAP3 7 CAP3