Dell PowerSwitch S4128F-ON OS10 Enterprise Edition User Guide Release 10.4.0ER - Page 582
mtu, pause, default values: 10G - 45KB, 40G-93KB.
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mtu Calculates the buffer size allocation for matched flows. Syntax mtu size Parameters size - Enter the size of the buffer (1500 to 9216). Default 9216 Command Mode POLICY-MAP-CLASS-MAP Usage Information The no version of this command returns the value to the default. Example OS10(conf-pmap-nqos-c)# mtu 2500 Supported Releases 10.3.0E or later pause Enables a pause based on buffer limits for the port to start or stop communication to the peer. Syntax pause [buffer-size size pause-threshold xoff-size resume-threshold xon-size] Parameters • buffer-size size - (Optional) Enter the ingress buffer size which is used as a guaranteed buffer in KB (default values: 10G - 45KB, 40G-93KB). • pause-threshold xoff-size - (Optional) Enter the buffer limit for the port to start or initiate a pause to the peer in KB (default values: 10G 9, 40G 18). • resume-threshold xon-size - (Optional) Enter the buffer limit for the port to stop or cancel sending a pause to the peer in KB (defaults 10G 9, 40G 9). Default Command Mode Usage Information Example See parameter values POLICY-MAP-CLASS-MAP 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 are applied on ports where all traffic classes must be 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(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 582 Quality of service