Tp-Link TL-PA551KIT [21/27] Advanced

TL-PA551 AV500+ Powerline Adapter with AC Pass Through

4.3 Advanced

The third tab window labeled “Advanced” is for Quality of Service. With the proper configuration, the

limit bandwidth can be took full advantage. 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 while CAP 1 and CAP 0 are used for data. Mapping VLAN tags to CAP levels is easily

done using the VLAN Priority Mapping function on the QoS tab window.

¾ Simple Application Mapping: The group allows you to choose what type of traffic with the highest

user priority you will use your local HomePlug device for by pitching one of the following radios.

Please select the radio type according to your demand.

¾ Advanced Priority Mapping: The group sets VLAN priority to CAP mapping and default priority.

Note that in HomePlug, CAP 3 is the highest priority while CAP 0 is the lowest priority. The values

shown in VLAN Tags Priority are the default settings for the first running.

4.4 System

The System tab window is for some basic settings of the adapter. On this tab window, you can upgrade

the firmware to the latest version, reset the adapter’s settings to the factory defaults and configure all

adapters’ network names.