Reference Guide

mtu
Calculates the buer size allocation for matched ows.
Syntax
mtu size
Parameters size — Enter the size of the buer (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 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 for PFC: 10G–166KB, 25G–195.5KB, 40G–315.5KB, 100G–512KB
– Default values for LLFC: 10G,25G— 234.5KB, 40G,100G—339.5KB
• 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 for PFC: 10G–96KB, 25G–96KB, 40G–192KB, 100G–232KB
– Default values for LLFC: 10G,25G–198.5KB, 40G,100G–264.5KB
•
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–87KB, 25G–87KB, 40G–183KB, 100G–223KB
– Default values for LLFC: 10G,25G–9KB, 40G,100G–36KB
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 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
Quality of service 689