Connectivity Guide
In an iSCSI session, a switch connects CNA servers (iSCSI initiators) to a storage array (iSCSI targets) in a SAN or TCP/IP network. iSCSI
optimization running on the switch uses dot1p priority-queue assignments to ensure that iSCSI trac receives priority treatment.
iSCSI conguration notes
• Enable iSCSI optimization so the switch auto-detects and auto-congures Dell EMC EqualLogic storage arrays directly connected to an
interface. iSCSI automatically congures switch parameters after connection to a storage device is veried. You must manually enable
an interface to support a storage device that is directly connected to a port, but not automatically detected by iSCSI.
• Enable iSCSI session monitoring and the aging time for iSCSI sessions. iSCSI monitoring sessions listen on TCP ports 860 and 3260 by
default.
• Congure the CoS/DSCP values applied to ingress iSCSI ows — create a class-iscsi class map in POLICY-CLASS-MAP mode.
• Enable LLDP to use iSCSI. The DCBX application TLV carries information about the dot1p priorities to use when sending iSCSI trac.
This informational TLV is packaged in LLDP PDUs. You can recongure the 802.1p priority bits advertised in the TLVs.
Congure iSCSI optimization
The iSCSI protocol provides storage trac TCP/IP transport between servers and storage arrays in a network using iSCSI commands.
Converged data center services
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