inS_cnge8MS_reV–
09/17/12 Page 47
INSTALLATION AND OPERATION MANUAL
CNGE8MS
Tech SupporT: 1.888.678.9427
Traffic Prioritization
Traffic Prioritization includes 3 modes: port base, 802.1p/COS, and TOS/DSCP. By traffic
prioritization function, you can classify the traffic into four classes for differential network
application. The CNGE8MS supports 4 priority queues.
QoS policy
Traffic Prioritization interface
The following table describes the labels in this screen.
Label
Description
QOS policy
• Using the 8,4,2,1 weight fair queue scheme: the output queues
will follow 8:4:2:1 ratio to transmit packets from the highest to
lowest queue. For example: 8 high queue packets, 4 middle queue
packets, 2 low queue packets, and the one lowest queue packets
are transmitted in one turn.
• Use the strict priority scheme: always the packets in higher queue
will be transmitted first until higher queue is empty.
Priority Mode
• Port-base: the output priority is determined by ingress port.
• COS only: the output priority is determined by COS only.
• TOS only: the output priority is determined by TOS only.
• COS first: the output priority is determined by COS and TOS, but
COS first.
• TOS first: the output priority is determined by COS and TOS, but
TOS first.
Apply
Select
Apply
to set the configurations.
Help
Show help file.