Dell EMC SmartFabric OS10 User Guide Release 10.5.1

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pause

Configures the ingress buffer size and buffer threshold limit for pause and resume operations.

Syntax

pause [buffer-size kilobytes pause-threshold kilobytes resume-threshold kilobytes]

Parameters

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 1. Port defaultsPort defaults
Port Speed	10G Port	25G Port	40G Port	50G Port	100G Port
PFC reserved ingress buffer	45 KB	54 KB	93 KB	111 KB	178 KB
PFC pause threshold	9 KB	9 KB	18 KB	18 KB	36 KB
PFC resume threshold	9 KB	9 KB	9 KB	9 KB	9 KB

Command Mode

POLICY-CLASS NETWORK-QOS

Usage Information

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.

Example

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 resume-threshold 10

Supported Releases

10.3.0E or later