System information

INS_CNGE2FE8MSPOE+_REV–
12/20/12 PAGE 59
INSTALLATION AND OPERATION MANUAL CNGE2FE8MSPOE+
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. IGS-3044GP(GC) series support 4 priority queues.
Qos policy
Traffic Prioritization interface
Label Description
QOS 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.
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.
Apply Select Apply to set the configurations.
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