Dell PowerSwitch S4128F-ON OS10 Enterprise Edition User Guide Release 10.4.3.0 - Page 1004

• resume-threshold xon-size - (Optional) Enter the buffer limit for the port to stop or cancel sending a pause to the peer in KB . - Default values for PFC: 10G, 25G-87KB, 40G-183KB, 100G-214KB - Default values for LLFC: 10G,25G-9KB, 40G,100G-36KB Default Command Mode Usage Information Example See parameter values POLICY-MAP-CLASS-MAP Only use this command under the network-qos policy type. Buffer-size, pause-thresholds, and resumethresholds vary based on platform. Add the policy-map with pause to system-qos to service an input to enable pause on all ports, based on a per-port link-level Flow-Control mode. The xoff and xon threshold settings for link-level flow-control are applied on ports where all traffic classes must be mapped to a single PG. Platformspecific default values are based on MTU sizes of 9216 and cable length of 100 meters. The no version of this command returns the value to the default. 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(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 Supported Releases 10.3.0E or later pfc-cos Configures priority flow-control for cost of service (CoS). Syntax Parameters pfc-cos cos-value cos-value - Enter a single, comma-delimited, or hyphenated range of CoS values for priority flow-control to enable, from 0 to 7. NOTE: The range 0-7 is invalid. All other ranges, including 0-6 and 1-7 are valid. Default Command Mode Usage Information Example 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 and 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 1004 Quality of service