Dell MX5108n OS10 Enterprise Edition User Guide for PowerEdge MX IO Modules Re - Page 588

2 Enter the output service-policy in SYSTEM-QOS mode or INTERFACE mode. service-policy {output} type {queuing} policy-map-name Enable strict priority on class-map OS10(config)# class-map type queuing magnum OS10(conf-cmap-queuing)# match queue 7 OS10(conf-cmap-queuing)# exit OS10(config)# policy-map type queuing solar OS10(conf-pmap-queuing)# class magnum OS10(conf-pmap-c-que)# priority OS10(conf-pmap-c-que)# exit OS10(conf-pmap-queuing)# exit OS10(config)# system qos OS10(conf-sys-qos)# service-policy output solar View QoS system OS10(conf-sys-qos)# do show qos system Service-policy (output)(queuing): solar Enable strict priority on interface OS10(config)# interface ethernet 1/1/5 OS10(conf-if-eth1/1/5)# service-policy output type queuing solar View policy-map OS10(conf-if-eth1/1/5)# do show policy-map Service-policy(queuing) output: solar Class-map (queuing): magnum priority Buffer management OS10 devices distribute the total available buffer resources into two buffer pools at ingress direction and three buffer pools at egress direction of all the physical ports. All ports in a system are allocated a certain amount of buffers from corresponding pools, based on the configuration state of each prioritygroup or queue. The remaining buffers in the pool are shared across all similarly configured ports. The following buffer pools are available: • Ingress buffer pools: - Lossy pool (default) - Lossless pool (PFC) • Egress buffer pools: - Lossy pool (default) - Lossless pool (PFC) - CPU pool (CPU control traffic) For example, when all ports are allocated reserved buffers from the lossy (default) pool, the remaining buffers in the lossy pool are shared across all ports, except the CPU port. When you enable priority flow control (PFC) on the ports, all the PFC enabled queues and priority-groups use the buffers from the lossless pool. OS10 dedicates a separate buffer pool for CPU traffic. All default reserved buffers for CPU port queues are from the CPU pool, and the remaining buffers are shared across all CPU queues. You can modify the buffer settings of CPU queues. OS10 allows configuration of buffers per priority-group and queue for each port. 588 Quality of service