Iscsi Cos And Priority Flow Control/Enhanced Transmission Selection Interactions - Dell M6220 User Configuration Manual

iSCSI CoS and Priority Flow Control/Enhanced Transmission Selection
Interactions
When manually or automatically enabling the classification of iSCSI flows on
PC80xx/PCM8024-k/PC81xx series switches, enabling iSCSI CoS is not
recommended.
When using manual configuration of the switch or auto-configuration via
DCBX, the iSCSI packets are classified based on the user priority present in
the VLAN tag and, in this case, enabling iSCSI CoS classification via the
iSCSI command set provides no benefit. Since EQL iSCSI devices require
ETS settings to function correctly with DCBx, the PC80xx and M8024-k
series PowerConnect switches (which do not support ETS) should disable
DCB when EQL devices are connected. PC8100 series switches support both
ETS and DCBx and support DCB configuration in conjunction with EQL
devices.
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Configuring iSCSI Optimization