QoS Configuration

Configure Qos setting of the every port

•Oos Policy: Select the Qos policy rule

Using the 8,4,2,1 weight fair queue scheme: The switch will follow 8:4:2:1 rate to

process priority queue from Hi to lowest queue. For example: the system will process 8 high queue packets, 4 middle queue packets, 2 low queue packets, and the one lowest queue packets at the same time

Use the strict priority scheme: The higher queue will always be process first, except higher queue is empty

•Priority Type: Every port has 5 priority type selections

Port-base: The port priority will follow the default port priority that user have assigned – High, middle, low, or lowest

COS only: The port priority will only follow the COS priority that user have assigned

TOS only: The port priority will only follow the TOS priority that user have assigned

COS first: The port priority will follow the COS priority first, and then other priority rule

TOS first: The port priority will follow the TOS priority first, and the other priority rule

•COS priority: Set the COS priority level 0~7

•TOS priority: The system provides 0~63 TOS priority level. Each level has 4 types of priority – high, mid, low, and lowest. The default value is “Lowest” priority for each level. When the IP packet is received, the system will check the TOS level value in the IP packet has received. For example: user set the TOS level 25 is high. The port 1 is following the TOS priority policy only. When the packet received by port 1, the system will check the TOS value of the received IP packet. If the TOS value of received IP packet is 25(priority = high), and then the packet priority will have highest priority.

[NOTE] QoS and Rate control cannot be existed at the same time.