Users Guide

priority-ow-control
Enables PFC on ingress interfaces.
Syntax
priority-flow-control {mode on}
Parameter mode on — Enable PFC for FCoE and iSCSI trac on an interface without enabling DCBX.
Default Disabled
Command Mode INTERFACE
Usage Information Before you enable PFC, apply a network-qos policy-class map with the specic PFC dot1p priority values to the
interface. In the PFC network-qos policy-class map, use the default buffer-size values if you are not sure
about the pause-threshold, and resume-threshold settings that you want to use. You cannot enable PFC
and link-layer ow control (LLFC) at the same time on an interface. The
no version of this command disables PFC
on an interface. When you disable PFC, remove the PFC network-qos policy-class map applied to the interface.
Example
OS10(conf-if-eth1/1/1)# priority-flow-control mode on
Supported Releases 10.3.0E or later
queue-limit
Sets the static and dynamic thresholds used to limit the shared-buer size of PFC trac-class queues.
Syntax
queue-limit {thresh-mode [static kilobytes | dynamic weight]}
Parameters
• thresh-mode — Buer threshold mode.
• static kilobytes — Enter the xed shared-buer limit available for PFC trac-class queues in kilobytes
(0 to 7787; maximum amount tuned by the
pfc-shared-buffer-size command).
• dynamic weight — Enter the weight value used to dynamically determine the shared-buer limit available
for PFC trac-class queues (1 to 10).
Default Dynamic weight of 9 and static shared-buer limit of 12479488 kilobytes
Command Mode POLICY-CLASS NETWORK-QOS
Usage Information To tune the amount of shared buers available for the static limit of PFC trac-class queues on the switch, use
the pfc-shared-buffer-size command. The dynamic queue-limit is determined by the current amount of
available shared buers.
Example
OS10(config)# policy-map type network-qos pp1
OS10(conf-pmap-network-qos)# class cc1
OS10(conf-pmap-c-nqos)# queue-limit thresh-mode static 1024
Supported Releases 10.3.0E or later
show interface priority-ow-control
Displays PFC operational status, conguration, and statistics on an interface.
Syntax
show interface [ethernet node/slot/port[:subport]] priority-flow-control
[details]
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