LevelOne GTL-5280 Manual - Page 153

3-14 QoS The switch support four QoS queues per port with strict or weighted fair queuing scheduling. It supports 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 support 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. 3-14.1 Port Classification The section allows you to configure the basic QoS Ingress Classification settings for all switch ports. and the settings relate to the currently selected unit, as reflected by the page header. Web Interface To configure the QoS Port Classification parameters in the web interface: 1. Click Configuration, QoS, Port Classification 2. Scroll to select QoS class, DP Level, PCP and DEI parameters 3. Click the Apply to Apply the setting 4. If you want to cancel the setting then you need to click the Reset button. It will revert to previously Saved values Figure 3-14.1: The QoS Configuration 145