Connectivity Guide

• 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 .
– Default values for PFC: 10G, 25G–87KB, 40G–183KB, 100G–214KB
– Default values for LLFC: 10G,25G–9KB, 40G,100G–36KB
Default See parameter values
Command Mode POLICY-MAP-CLASS-MAP
Usage Information Only use this command under the network-qos policy type. Buer-size, pause-thresholds, and resume-
thresholds 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 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. The no version of this
command returns the value to the default.
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, from 0 to 7.
NOTE: The range 0-7 is invalid. All other ranges, including 0-6 and 1-7 are valid.
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 Flow-Control Enable mode. Add the policy-map with the
pfc-
cos conguration to interface congurations 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 congure 40G to 10G mode on interfaces and
pause (no drop) is enabled on system-qos, all queues may or may not drop trac based on the availability of
buers. The no version of this command returns the value to the default.
Example
OS10(conf-pmap-c-nqos)# pfc-cos 0-2
1004 Quality of service