Deployment Guide

25 Dell EMC Networking OS10EE FCoE Deployment with FSB
6.2.5 Configure QoS
Quality of Service (QoS) configuration is a 3-step process:
1. Create class maps to classify traffic.
2. Create QoS and policy maps for the classified traffic.
3. Apply the QoS and policy maps.
FCoE traffic is assigned dot1p priority value 3 by default. In the following tables, dot1p priority value 3 is
mapped to QoS group 3. The remaining dot1p priority values, 0-2 and 4-7, are mapped to QoS group 0. QoS
group 3 is mapped to queue 3, and QoS group 0 is mapped to queue 0. In this example, bandwidth is
allocated 50% to queue 3 for FCoE traffic and 50% to queue 0 for all other traffic using the bandwidth
percent command. (Bandwidth allocations should total 100% and may be adjusted accordingly to optimize
traffic).
Finally, exit configuration mode and save the configuration with the end and write memory commands.
S4148U-F-Port-1
S4148U-F-Port-2
dcbx enable
class-map type network-qos
class_Dot1p_3
match qos-group 3
class-map type queuing map_ETSQueue_0
match queue 0
class-map type queuing map_ETSQueue_3
match queue 3
trust dot1p-map map_Dot1pToGroups
qos-group 0 dot1p 0-2,4-7
qos-group 3 dot1p 3
qos-map traffic-class
map_GroupsToQueues
queue 0 qos-group 0
queue 3 qos-group 3
policy-map type network-qos
policy_Input_PFC
class class_Dot1p_3
pause
pfc-cos 3
policy-map type queuing
policy_Output_BandwidthPercent
class map_ETSQueue_0
bandwidth percent 50
class map_ETSQueue_3
bandwidth percent 50
interface ethernet 1/1/41
flowcontrol receive off
flowcontrol transmit off
priority-flow-control mode on
ets mode on
service-policy input type network-qos
policy_Input_PFC
dcbx enable
class-map type network-qos
class_Dot1p_3
match qos-group 3
class-map type queuing map_ETSQueue_0
match queue 0
class-map type queuing map_ETSQueue_3
match queue 3
trust dot1p-map map_Dot1pToGroups
qos-group 0 dot1p 0-2,4-7
qos-group 3 dot1p 3
qos-map traffic-class
map_GroupsToQueues
queue 0 qos-group 0
queue 3 qos-group 3
policy-map type network-qos
policy_Input_PFC
class class_Dot1p_3
pause
pfc-cos 3
policy-map type queuing
policy_Output_BandwidthPercent
class map_ETSQueue_0
bandwidth percent 50
class map_ETSQueue_3
bandwidth percent 50
interface ethernet 1/1/41
flowcontrol receive off
flowcontrol transmit off
priority-flow-control mode on
ets mode on
service-policy input type network-qos
policy_Input_PFC