Draytek VigorSwitch G2240 - Qos (Quality of Service) Configuration; Ports

VigorSwitch G2240 User’s Guide
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The switch support four QoS queues per port with strict or weighted fair queuing
scheduling. There are 24 QoS Control Lists (QCL) for advance programmable QoS
classification, based on IEEE 802.1p, Ethertype, VID, IPv4/IPv6 DSCP and UDP/TCP
ports and ranges.
High flexibility in the classification of incoming frames to a QoS class. The QoS
classification looks for information up to Layer 4, including IPv4 and IPv6 DSCP, IPv4
TCP/UDP port numbers, and user priority of tagged frames. This QoS classification
mechanism is implemented in a QoS control list (QCL). The QoS class assigned to a frame
is used throughout the device for providing queuing, scheduling, and congestion control
guarantees to the frame according to what was configured for that specific QoS class.
The switch supports advanced memory control mechanisms providing excellent
performance of all QoS classes under any traffic scenario, including jumbo frame, a super
priority queue with dedicated memory and strict highest priority in the arbitration. The
ingress super priority queue allows traffic recognized as CPU traffic to be received and
queued for transmission to the CPU even when all the QoS class queues are congested.
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Function name:
Port QoS Configuration
Function description:
Configure each port QoS behavior. Four QoS queue per port with strict or weighted fair
queuing scheduling. There are 24 QoS Control Lists (QCL) for advance programmable
QoS classification, based on IEEE 802.1p, Ethertype, VID, IPv4/IPv6 DSCP and
UDP/TCP ports and ranges.
Parameter description:
Number of Classes: 1 / 2 / 4
Port: User can choose the port (1~24) respectively with Priority
Class on Per Port Priority function.