6–Configuring RoCE
Preparing the Ethernet Switch
52 BC0154503-00 C
7. Configure network QoS policy maps to set priority flow control for no drop
traffic class.
switch(config)# policy-map type network-qos roce
switch(config)# class type network-qos class-roce
switch(config)# pause no-drop
8. Apply the new policy at the system level.
switch(config)# system qos
switch(config)# service-policy type qos input roce
switch(config)# service-policy type queuing output roce
switch(config)# service-policy type queuing input roce
switch(config)# service-policy type network-qos roce
9. Assign a VLAN ID to the switch port to match the VLAN ID assigned to the
adapter (5).
switch(config)# interface ethernet x/x
switch(config)# switchport mode trunk
switch(config)# switchport trunk allowed vlan 1,5
Dell Z9100 Ethernet Switch
Configuring the Dell Z9100 Ethernet Switch for RoCE comprises configuring a
DCB map for RoCE, configuring priority-based flow control (PFC) and enhanced
transmission selection (ETS), verifying the DCB map, applying the DCB map to
the port, verifying PFC and ETS on the port, specifying the DCB protocol, and
assigning a VLAN ID to the switch port.
1. Create a DCB map.
Dell# configure
Dell(conf)# dcb-map roce
Dell(conf-dcbmap-roce)#
2. Configure two ETS traffic classes in the DCB map with 50 percent
bandwidth assigned for RoCE (group 1).
Dell(conf-dcbmap-roce)# priority-group 0 bandwidth 50 pfc off
Dell(conf-dcbmap-roce)# priority-group 1 bandwidth 50 pfc on
3. Configure the PFC priority to match the adapter priority (5).
Dell(conf-dcbmap-roce)# priority-pgid 0 0 0 0 0 1 0 0