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Performance Monitor
Monitor Priority and Pause Frames for RDMA (RoCE) on Dell Switch
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Dell Show Commands:
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Show DCB and ETS for Dell Switch:
S2D# show dcb
S2D# show qos priority-groups
S2D# show qos dcb-map RDMA
S2D# show qos dot1p-queue-mapping
S2D ports
S2D# show interfaces tengigabitethernet 1/x pfc summary
S2D# show interfaces tengigabitethernet 1/x pfc statistics
S2D# show interfaces tengigabitethernet 1/x ets summary
S2D# show interfaces tengigabitethernet 1/x ets detail
S2D# show stack-unit all stack-ports all pfc details
S2D# show stack-unit all stack-ports all ets details
Dell switch configuration example (S4810):
S2D# dcb enable
Example for Host ports for Storage only:
PFC control on QoS Class 3 (SMB)
S2D# configure
S2D (Config)# dcb-map dcb-smb
S2D# priority-group 0 bandwidth 5 pfc off
S2D# priority-group 1 bandwidth 95 pfc on
S2D# priority-pgid 0 0 0 1 0 0 0 0
S2D# exit
Example for Host ports for Storage and Virtual Guest (VM) traffic with one Physical Network Adapter (2 Ports):
PFC control on QoS Class 3 (SMB) and Class 5 (Cluster)
S2D# configure
S2D# dcb-map dcb-smb
S2D# priority-group 0 bandwidth 39 pfc off
S2D# priority-group 1 bandwidth 60 pfc on
S2D# priority-group 2 bandwidth 1 pfc on
S2D# priority-pgid 0 0 0 1 0 2 0 0
S2D# exit
Apply map to ports 0-xx
S2D# configure
S2D# interface range tengigabitethernet 0/0-xx
S2D# dcb-map dcb-smb
S2D# exit
