Dell S4148U-ON OS10 Enterprise Edition User Guide Release 10.4.0E R2 - Page 571
pfc-cos
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Usage Information Example This command can only be used under network-qos policy type. Buffer-size, pause-thresholds, and resumethresholds vary based on platform. The no version of this command returns the value to the default. Add the policy-map with pause to system-qos to service an input to enable pause on all ports, based on a per-port linklevel flow-control or priority flow-control enable mode. The xoff and xon threshold settings for link-level flowcontrol must map to traffic classes mapped to a single PG. Platform-specific default values are based on MTU sizes of 9216 and cable length of 100 meters. OS10(conf-pmap-c-nqos)# pause buffer-size 45 pause-threshold 25 resumethreshold 10 Example (global and shared buffer) OS10(config)# policy-map type network-qos nqGlobalpolicy1 OS10(conf-cmap-nqos)# class CLASS-NAME OS10(conf-cmap-nqos-c)# pause buffer-size 45 pause-threshold 30 resumethreshold 30 OS10(conf-cmap-nqos-c)# queue-limit thresh-mode static 150 NOTE: The 'thresh-mode" listed can either be static or dynamic. Please verify which one should be mentioned. OS10(config)# policy-map type network-qos nqGlobalpolicy1 OS10(conf-cmap-nqos)# class type network-qos nqclass1 OS10(conf-cmap-nqos-c)# pause buffer-size 45 pause-threshold 30 resumethreshold 10 OS10(conf-cmap-nqos-c)# queue-limit thresh-mode static 150 Supported Releases 10.3.0E or later pfc-cos Configures priority flow-control for cost of service (CoS). Syntax Parameters Default Command Mode Usage Information Example pfc-cos cos-value cos-value - Enter a single, comma-delimited, or hyphenated range of CoS values for priority flow-control to enable (0 to 7). Not configured POLICY-MAP-CLASS-MAP To configure link-level flow-control, do not configure pfc-cos for the matched class for this policy. Add the policy-map with the pfc-cos configuration to system-qos to service an input to enable priority flow-control behavior on all ports, based on a per-port priority flow-control enable mode. Add the policy-map with the pfccos configuration to interface configurations to service at input to enable priority flow-control on that particular port, based on the port's priority flow-control enable mode. If you configure 40G to 10G mode on interfaces and pause (no drop) is enabled on system-qos, all queues may or may not drop traffic based on the availability of buffers. The no version of this command returns the value to the default. OS10(conf-pmap-c-nqos)# pfc-cos 0-2 Example (global buffer/shared buffer) OS10(config)# policy-map type network-qos nqGlobalpolicy1 OS10(conf-cmap-nqos)# class CLASS-NAME OS10(conf-cmap-nqos-c)# pause buffer-size 45 pause-threshold 25 resumethreshold 10 OS10(conf-cmap-nqos-c)# pfc-cos 0-2 OS10(conf-cmap-nqos-c)# queue-limit 140 Supported Releases 10.3.0E or later Quality of service 571
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