Connectivity 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 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,
from 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 queuesm from 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 current amount of available shared buers determines the
dynamic queue-limit.
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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