Advertisement
1.7
QoS Setting Page
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 by using tags at the beginning of data frames. You can select the
standard mode including Default, Video, VoIP and Data Transfer, the priority
will be set by the utility according to your selection; or for the advance mode by
clicking on "Advance Mode" button to enter its setting page.
The following window is "Advance Mode". Virtual Local Area Network (VLAN)
802.1p priority tags on Ethernet frames are used to specify 8 (0 – 7) levels of 'user
priority'. PA-1102 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 window.
12
Advertisement
