Users Guide

PFC is enabled on traffic classes with dot1p 3 and 4 traffic. The two traffic classes require different ingress queue processing. In
the network-qos pp1 policy map, class cc1 uses customized PFC buffer size and pause frame settings; class cc2 uses the
default settings.
OS10(config)# system qos
OS10(config-sys-qos)# trust-map dot1p default
OS10(config)# system qos
OS10(config-sys-qos)# exit
OS10(config)# class-map type network-qos cc1
OS10(config-cmap-nqos)# match qos-group 3
OS10(config-cmap-nqos)# exit
OS10(config)# class-map type network-qos cc2
OS10(config-cmap-nqos)# match qos-group 4
OS10(config-cmap-nqos)# exit
OS10(config)# policy-map type network-qos pp1
OS10(config-pmap-network-qos)# class cc1
OS10(config-pmap-c-nqos)# pause buffer-size 30 pause-threshold 20 resume-threshold 10
OS10(config-pmap-c-nqos)#pfc-cos 3
OS10(config-pmap-c-nqos)#exit
OS10(config-pmap-network-qos)# class cc2
OS10(config-pmap-c-nqos)# pause
OS10(config-pmap-c-nqos)#pfc-cos 4
OS10(config-pmap-c-nqos)#exit
OS10(config)# interface ethernet 1/1/1
OS10(conf-if-eth1/1/1)# service-policy input type network-qos pp1
OS10(conf-if-eth1/1/1)# priority-flow-control mode on
OS10(conf-if-eth1/1/1)# no shutdown
View PFC configuration and operational status
OS10(conf-if-eth1/1/1)# do show interface ethernet 1/1/1 priority-flow-control details
ethernet1/1/1
Admin Mode : true
Operstatus: true
PFC Priorities: 3,4
Total Rx PFC Frames: 300
Total Tx PFC frames: 200
Cos Rx Tx
-------------------------
0 0 0
1 0 0
2 0 0
3 300 200
4 0 0
5 0 0
6 0 0
7 0 0
View PFC ingress buffer configuration
OS10# show qos ingress buffers interface ethernet 1/1/1
Interface : ethernet1/1/1
Speed : 0
Priority-grp Reserved Shared-buffer Shared-buffer
XOFF
XON
no buffer-size mode threshold
threshol
d threshold
--------------------------------------------------------------------------------
--------------------------------------------
0 - - -
-
-
Converged data center services
1683