Reference Guide

• Spanning-tree portfast is enabled on the interface.
• Unicast storm control is disabled on the interface.
Enter the iscsi profile-compellent command in INTERFACE Configuration mode; for example:
Dell(conf-if-te-o/50# iscsi profile-compellent
Enable and Disable iSCSI Optimization
The following describes enabling and disabling iSCSI optimization.
NOTE: iSCSI monitoring is disabled by default. iSCSI auto-configuration and auto-detection are
enabled by default. Also, iSCSI session snooping is disabled and CAM allocation for iSCSI is set to 0.
When you enable iSCSI on the switch:
• If PFC is disabled on an interface, link-level flow control is enabled and flow control settings are set to
rx on tx off on the interface. (If you enabled PFC on an interface, link-level flow control cannot
be enabled.)
• iSCSI session snooping is enabled.
• iSCSI LLDP monitoring starts to automatically detect EqualLogic arrays.
The following message displays when you enable iSCSI on a switch and describes the configuration
changes that are automatically performed:
%STKUNIT0-M:CP %IFMGR-5-IFM_ISCSI_ENABLE: iSCSI has been enabled causing flow
control to be
enabled on all interfaces. EQL detection and enabling iscsi profile-compellent
on an interface
may cause some automatic configurations to occur like jumbo frames on all ports
and no storm
control and spanning tree port-fast on the port of detection.
You can reconfigure any of the auto-provisioned configuration settings that result when you enable iSCSI
on a switch.
When you disable the iSCSI feature, iSCSI resources are released and the detection of EqualLogic arrays
using LLDP is disabled. Disabling iSCSI does not remove the MTU, flow control, portfast, or storm control
configuration applied as a result of enabling iSCSI.
NOTE: By default, CAM allocation for iSCSI is set to 0. This disables session monitoring.
Default iSCSI Optimization Values
The following table lists the default values for the iSCSI optimization feature.
Table 32. iSCSI Optimization Defaults
Parameter Default Value
iSCSI Optimization global setting Disabled
iSCSI CoS mode (802.1p priority queue mapping) Enabled: dot1p priority 4 without the remark
setting
iSCSI CoS Packet classification VLAN classifies the iSCSI packets instead of by
DSCP values.
iSCSI Optimization
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