mini 200
Starter Kit
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Appendix C-About QoS
Mini200 allows for 4 levels of Channel Access Priority (CAP (0 – 3)). The 8 levels of VLAN Ether-
net 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:
