Icidu 200 MBPS, User Manual

Page: 23 / 23

N I - 7 0 7 5 2 5 H O M E P L U G A D A P T E R S TA R T E R K I T 2 0 0 M B P S
21
Appendix C About QoS
PLC 200AV allows 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 is used for voice and network management
frames, 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 default priority mapping of packets that do not have a VLAN
tag. Settings are available for unicast (directed to a host).

IGMP - (default CAP 3) - set the channel access priority for IGMP frames - these are
the group management frames, not the stream data

Unicast - (default CAP 1) - set the default channel access priority for unicast frames
not matching any other classification or mapping.

IGMP managed Multicast Stream (Fixed to CAP 2) - set the default channel access
priority for stream data belonging to a snooped IGMP multicast group.

Multicast/Broadcast - set 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