Dell PowerEdge FX2/FX2s - Manual (Page 113)

• iSCSI DCBx TLVs are supported.
The following figure shows iSCSI optimization between servers in a server enclosure and a storage array
in which an Aggregator connects installed servers (iSCSI initiators) to a storage array (iSCSI targets) in a
SAN network. iSCSI optimization running on the Aggregator is configured to use dot1p priority-queue
assignments to ensure that iSCSI traffic in these sessions receives priority treatment when forwarded on
Aggregator hardware.
Figure 16. iSCSI Optimization Example
Monitoring iSCSI Traffic Flows
The switch snoops iSCSI session-establishment and termination packets by installing classifier rules that
trap iSCSI protocol packets to the CPU for examination.
Devices that initiate iSCSI sessions usually use well-known TCP ports 3260 or 860 to contact targets.
When you enable iSCSI optimization, by default the switch identifies IP packets to or from these ports as
iSCSI traffic.
iSCSI Optimization 113