Reference Guide

pause
Enables a pause based on buer 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 buer size which is used as a guaranteed buer in KB
(default values: 10G – 45KB, 40G—93KB).
• pause-threshold xoff-size — (Optional) Enter the buer 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 buer limit for the port to stop or cancel sending a
pause to the peer in KB (defaults 10G 9, 40G 9).
Default See parameter values
Command Mode POLICY-MAP-CLASS-MAP
Usage Information This command can only be used under network-qos policy type. Buer-size, pause-thresholds, and resume-
thresholds 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 link-
level ow-control or priority ow-control enable mode. The xoff and xon threshold settings for link-level ow-
control are applied on ports where all trac classes must be mapped to a single PG. Platform-specic default
values are based on MTU sizes of 9216 and cable length of 100 meters.
Example
OS10(conf-pmap-c-nqos)# pause buffer-size 45 pause-threshold 25 resume-
threshold 10
Example (global and
shared buer)
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 resume-
threshold 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 resume-
threshold 10
Supported Releases 10.3.0E or later
pfc-cos
Congures priority ow-control for cost of service (CoS).
Syntax
pfc-cos cos-value
Parameters cos-value — Enter a single, comma-delimited, or hyphenated range of CoS values for priority ow-control to
enable (0 to 7).
Default Not congured
Command Mode POLICY-MAP-CLASS-MAP
Usage Information To congure link-level ow-control, do not congure pfc-cos for the matched class for this policy. Add the
policy-map with the pfc-cos conguration to system-qos to service an input to enable priority ow-control
behavior on all ports, based on a per-port priority ow-control enable mode. Add the policy-map with the
pfc-
cos conguration to interface congurations to service at input to enable priority ow-control on that particular
576 Quality of service