6–RoCE Configuration
Preparing the Ethernet Switch
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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
Configuring the 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.
To configure the Dell switch:
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
4.
Verify the DCB map configuration priority group.
Dell(conf-dcbmap-roce)#
do show qos dcb-map roce
-----------------------
State :Complete
PfcMode :ON
--------------------
PG:0 TSA:ETS BW:40 PFC:OFF
Priorities:0 1 2 3 4 6 7
PG:1 TSA:ETS BW:60 PFC:ON
Priorities:5
5.
Apply the DCB map to the port.
Dell(conf)#
interface twentyFiveGigE 1/8/1
Dell(conf-if-tf-1/8/1)#
dcb-map roce
