NEC IPASOLINK 400 Installation And Provisioning page 83

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Shaper Rate = 1000M in all classes (= no speed limit). DWRR (Deficit Weighted Round Robin) Weight defines
the capacity usage between the classes (excluding SP class). The sum of the weights is 1+5+28+89+3 = 127,
therefore Class 0 gets 1/127 = 0,79% of the capacity left after SP-class frames are transmitted, in the case
when there is congestion. Queue Length defines burst handling and on the other hand latency and jitter.
The Yellow Frame Threshold –settings are meaningless if no colouring is used. Green frames are being
dropped in the WRED mode when the queue is 70 per cent full.
Figure 75. Class 2 settings for one Ethernet port. Note. FW 3.00: queue length is 1024 kbyte (was 128 kbyte).
MC-A4 Port01 QoS mapping (in Figure 76) determines the modem queue of the incoming frame. The
modem port QoS mapping setting will decide the egress queue at the egress Ethernet port.
Figure 76. Port QoS settings based on the sample QoS policy.