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2.5 User Interface - QoS Tab
QoS requirements are different for various data types such as streaming video or music, voice and raw data. To
provide higher QoS for streaming data, priority levels can be set using tags at the beginning of data frames. Virtual
Local Area Network (VLAN) 802.1p priority tags on Ethernet frames are used to specify 8 (0 – 7) levels of ‘user
priority’. HomePlug AV powerline allows for 4 levels of Channel Access Priority (CAP (0 – 3)). Therefore, 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, CAP 2 is used for
streaming video and music while CAP 1 and CAP 0 are used for data. Mapping VLAN tags or TOS bits to CAP levels
is easily done using the VLAN Priority Mapping function on the QoS tab window.
2.5.1 List Views
The QoS tab includes two list views to provide simple channel access priority (CAP) classification for individual MAC
addresses and IP Ports. There is a collective limit of eight across both lists. No delimiters, colons, or dashes are
allowed in the MAC address format.
To write these to the PIB, and other QoS related values found on this tab, the Download PIB checkbox found on the
Configuration tab must be checked before exercising the Write button.
2.5.2 Priority Mapping
The ‘Priority Mapping’ group contains both VLAN and TOS Bit mapping capability. When selected, packets matching
the VLAN or TOS Bit priority will be assigned the Powerline contention priority (Channel Access Priority, CAP) as set
in the corresponding dropdown box. If a packet has both VLAN and TOS in it, VLAN will override TOS.
Summary of Contents for DN-15019-2
Page 1: ...Powerline Ethernet Bridge User s Manual DN 15019 2 ...
Page 3: ...2 1 Powerline Networking Installation 1 1 Simple step to install Powerline Networking ...
Page 5: ...4 1 2 3 Internet ADSL and Home Networking via power outlet ...
Page 9: ...8 Figure 2 1 1 Figure 2 1 2 ...
Page 15: ...14 Figure 4 Connection Information Tab ...
Page 21: ...20 ...