Dell MX9116n EMC SmartFabric OS10 User Guide Release 10.5.1 - Page 1455

pause Configures the ingress buffer size and buffer threshold limit for pause and resume operations. Syntax Parameters pause [buffer-size kilobytes pause-threshold kilobytes resume-threshold kilobytes] ● buffer-size kilobytes - Enter the reserved (guaranteed) ingress-buffer size in kilobytes for PFC dot1p traffic, from 0 to 7787. ● pause-threshold kilobytes - Enter the buffer threshold limit (in kilobytes) to send pause frames to a transmitting device to temporarily halt the data transmission, from 0 to 7787. ● resume-threshold kilobytes - Enter the threshold limit (in kilobytes) at which a request is sent to the transmitting device to resume sending traffic, from 0 to 7787. Defaults The default ingress-buffer size reserved for PFC traffic classes, and the pause and resume thresholds vary according to the interface type. The default egress buffer that is reserved for PFC traffic classes is 0 on all interface types. Table 93. Port defaults Port Speed 10G Port PFC reserved ingress buffer 45 KB PFC pause threshold 9 KB PFC resume threshold 9 KB 25G Port 54 KB 9 KB 9 KB 40G Port 93 KB 18 KB 9 KB 50G Port 111 KB 18 KB 9 KB 100G Port 178 KB 36 KB 9 KB Command Mode Usage Information Example POLICY-CLASS NETWORK-QOS Use the pause command without optional parameters to apply the default ingress-buffer size, and pause (XON) and resume (XOFF) thresholds. Default values for the buffer-size, pause-threshold and resume-threshold parameters vary across interface types and port speeds. The default values are based on the default MTU size of 9216 bytes. Use the optional queue-limit thresh-mode command to change the number of shared buffers available to PFC traffic-class queues in the policy-class-map. OS10(config)# policy-map type network-qos pp1 OS10(conf-pmap-network-qos)# class cc1 OS10(conf-pmap-c-nqos)# pause buffer-size 30 pause-threshold 20 resumethreshold 10 Supported Releases 10.3.0E or later pfc-cos Configures the matching dot1p values that are used to send PFC pause frames. Syntax Parameters Default Command Mode Usage Information pfc-cos dot1p-priority dot1p-priority - Enter the dot1p priority value for a PFC traffic class, from 1 to 7. Use a comma (,) to separate multiple values or a hyphen ( - ) to specify a range of values; for example, 0, 3, 7, or 3-6. Not configured POLICY-CLASS NETWORK-QOS When you enter PFC-enabled dot1p priorities with pfc-cos, the dot1p values must be the same as the match qos-group (traffic class) numbers in the network-qos class map that is used to define the PFC traffic class, see Configure PFC Example. A qos-group number is used only internally to classify ingress traffic classes. For the default dot1p-priority-to-traffic-class mapping and how to configure a nondefault Converged data center services 1455