Dell PowerSwitch S4128F-ON OS10 Enterprise Edition User Guide Release 10.4.3.0 - Page 1092

priority-flow-control Enables PFC on ingress interfaces. Syntax Parameter Default Command Mode Usage Information Example priority-flow-control {mode on} mode on - Enable PFC for FCoE and iSCSI traffic on an interface without enabling DCBX. Disabled INTERFACE Before you enable PFC, apply a network-qos policy-class map with the specific PFC dot1p priority values to the interface. In the PFC network-qos policy-class map, use the default buffer-size values if you are not sure about the pause-threshold and resume-threshold settings that you want to use. You cannot enable PFC and LLFC at the same time on an interface. The no version of this command disables PFC on an interface. When you disable PFC, remove the PFC network-qos policy-class map applied to the interface. OS10(conf-if-eth1/1/1)# priority-flow-control mode on Supported Releases 10.3.0E or later queue-limit Sets the static and dynamic thresholds used to limit the shared-buffer size of PFC traffic-class queues. Syntax queue-limit {thresh-mode [static kilobytes | dynamic weight]} Parameters • thresh-mode - Buffer threshold mode. • static kilobytes - Enter the fixed shared-buffer limit available for PFC traffic-class queues in kilobytes, from 0 to 7787; maximum amount tuned by the pfc-shared-buffer-size command. • dynamic weight - Enter the weight value used to dynamically determine the shared-buffer limit available for PFC traffic-class queuesm from 1 to 10. Default Command Mode Usage Information Example Dynamic weight of 9 and static shared-buffer limit of 12479488 kilobytes POLICY-CLASS NETWORK-QOS To tune the amount of shared buffers available for the static limit of PFC traffic-class queues on the switch, use the pfc-shared-buffer-size command. The current amount of available shared buffers determines the dynamic queue-limit. OS10(config)# policy-map type network-qos pp1 OS10(conf-pmap-network-qos)# class cc1 OS10(conf-pmap-c-nqos)# queue-limit thresh-mode static 1024 Supported Releases 10.3.0E or later show interface priority-flow-control Displays PFC operational status, configuration, and statistics on an interface. Syntax show interface [ethernet node/slot/port[:subport]] priority-flow-control [details] 1092 Converged data center services