White Papers

Configure Data Center Bridging (optional)
16 Dell EMC Networking S4248-ON Switch Configuration Guide for Dell EMC Unity, SC Series, and PS Series
iSCSI SANs | SCG4077
3.9 Create ETS policy-map for traffic-class bandwidth allocations
OS10(config)# policy-map type queuing <queuing-policy-name>
OS10(config-pmap-queuing)# class <LAN-traffic-map-name>
OS10(config-pmap-c-que)# bandwidth percent <bandwidth-percentage>
OS10(config-pmap-c-que)# exit
OS10(config-pmap-queuing)# class <iSCSI-traffic-map-name>
OS10(config-pmap-c-que)# bandwidth percent <bandwidth-percentage>
OS10(config-pmap-c-que)# exit
OS10(config-pmap-queuing)# exit
Note: The sum of the bandwidth-percentages must be equal to 100. Monitor the LAN and SAN performance
in your environment to determine optimal bandwidth settings.
3.10 Apply policies and VLAN ID to all switch edge ports (except port
channel member ports)
OS10(config)# interface range ethernet 1/1/1-1/1/40
OS10(conf-range-eth1/1/1-1/1/40)# switchport mode trunk
OS10(conf-range-eth1/1/1-1/1/40)# switchport trunk allowed vlan <vlan-id>
OS10(conf-range-eth1/1/1-1/1/40)# service-policy input type network-qos <policy-
map-name>
OS10(conf-range-eth1/1/1-1/1/40)# service-policy output type queuing <queuing-
policy-name>
OS10(conf-range-eth1/1/1-1/1/40)# ets mode on
OS10(conf-range-eth1/1/1-1/1/40)# qos-map traffic-class <queue-map-name>
OS10(conf-range-eth1/1/1-1/1/40)# priority-flow-control mode on
OS10(conf-range-eth1/1/1-1/1/40)# exit
Note: The priority-flow-control setting can be enabled for limited ports on the switch. When breakout ports
are configured, the total number of ports on the switch can be exceed this limit and cause the error
Error:QOS: Insufficient hardware resources. Refer to the release notes for the switch for further details.
3.11 Apply policies and VLAN ID on port channel and its member ports
Note: Configuring for a port channel is mandatory for PS Series, optional for SC Series, and not applicable to
Dell EMC Unity SANs.
OS10(config)# interface port-channel 1
OS10(conf-if-po-1)# switchport mode trunk
OS10(conf-if-po-1)# switchport trunk allowed vlan <vlan-id>
OS10(conf-if-po-1)# no shutdown
OS10(conf-if-po-1)# exit