Connectivity Guide

pfc-cos
Congures the matching dot1p values used to send PFC pause frames.
Syntax
pfc-cos dot1p-priority
Parameters dot1p-priority — Enter a single dot1p priority value for a PFC trac class, from 1 to 7, a hyphen-separated
range, or multiple dot1p values separated by commas.
Default Not congured
Command Mode POLICY-CLASS NETWORK-QOS
Usage Information When you enter PFC-enabled dot1p priorities with pfc-cos, the dot1p values must be the same as the match
qos-group (trac class) numbers in the network-qos class map used to dene the PFC trac class, see
Congure PFC Example. A qos-group number is used only internally to classify ingress trac classes. For the
default dot1p-priority-to-trac-class mapping and how to congure a non-default mapping, see PFC conguration
notes. A PFC trac class requires a 1-to-1 mapping — only one dot1p value is mapped to a qos-group number.
Example
OS10(config)# class-map type network-qos cc1
OS10(conf-cmap-nqos)# match qos-group 3
OS10(conf-cmap-nqos)# exit
Example (policy-
map)
OS10(config)# policy-map type network-qos pp1
OS10(conf-pmap-network-qos)# class cc1
OS10(conf-pmap-c-nqos)# pfc-cos 3
Supported Releases 10.3.0E or later
pfc-shared-buer-size
Congures the amount of shared buers available for PFC-enabled trac on the switch.
Syntax
pfc-shared-buffer-size kilobytes
Parameter kilobytes — Enter the total amount of shared buers available to PFC-enabled dot1p trac in kilobytes, from 0
to 7787.
Default 832KB
Command Mode SYSTEM-QOS
Usage Information By default, the lossy ingress buer handles all ingress trac. When you enable PFC, dot1p ingress trac competes
for shared buers in the lossless pool instead of the shared lossy pool. Use this command to increase or decrease
the shared buer allowed for PFC-enabled ows. The congured amount of shared buers is reserved for PFC
ows only after you enable PFC on an interface using the priority-flow-control mode on command.
Example
OS10(config)# system qos
OS10(conf-sys-qos)# pause-shared-buffer-size 1024
Supported Releases 10.3.0E or later
878 Converged data center services