White Papers

7 Dell EMC Networking – RDMA over Converged Ethernet (RoCE v1) Cheat Sheet
3 Configuration details
The following section depicts in full detail the entire switch configuration for both the spines
and leaf. For brevity, only one spine configuration is shown. The configuration is repeated
for the other spine.
3.1 Spine – S4148Fs
3.2 S4148F (OS10)
1. Configure VLT
a. Switch# conf
b. Switch(conf)# vlt domain 1
c. Switch(conf-vlt-1)# discovery-interface ethernet1/1/1-1/1/2
d. Switch(conf-vlt-1)# end
e. Switch#
2. Enable lldp
a. Switch# conf
b. Switch(conf)# lldp enable
c. Switch(conf-lldp)# end
d. Switch#
3. Enable DCBX
a. Switch# conf
b. Switch(conf)# dcbx en
c. Switch#
4. Turn on ETS
a. Switch(config)# system qos
b. Switch(config-sys-qos)# ets mode on
c. Switch(config-sys-qos)# end
d. Switch#
5. Configure the qos-map to match the queues to the CoS values, 0(LAN), 4(iSCSI), and
5(RDMA)
a. Switch# conf t
b. Switch(config)# qos-map traffic-class qmap
c. Switch(config-qos-map)# queue 0 qos-group 0-3,6-7
d. Switch(config-qos-map)# queue 5 qos-group 5
e. Switch(config-qos-map)# queue 4 qos-group 4