Dell S4148U-ON OS10 Enterprise Edition User Guide Release 10.4.0E R2 - Page 561

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 and three buffer pools at egress. 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. The buffer usage accounting happens for ingress packets on ingress pools and egress packets on egress pool. You can configure ingress packets buffer accounting per priority-group and egress packet buffer accounting per queue level. Configure ingress buffer Default settings In the default settings for ingress buffers, all traffic classes are mapped to the default priority group and the buffers are reserved per default priority group 7. All buffers are part of the default pool and all ports share buffers from the default pool. The reserved buffer is 9360 bytes for the speed of 10G, 25G, 40G, 50G, and 100G. The supported speed varies for different platforms. The following table lists the maximum buffers for different platforms. Quality of service 561