Enable And Disable Iscsi Optimization - Dell S4048T Configuration Manual

Enable and Disable iSCSI Optimization

The following describes enabling and disabling iSCSI optimizaiton.
NOTE: iSCSI monitoring is disabled by default. iSCSI auto-configuration and auto-detection is enabled by
default.
If you enable iSCSI, flow control is automatically enabled on all interfaces. To disable flow control on all
interfaces, use the no flow control rx on tx off command and save the configuration. To disable
iSCSI optimization, which can turn on flow control again on reboot, use the no iscsi enable command
and save the configuration.
When you enable iSCSI on the switch, the following actions occur:
• Link-level flow control is globally enabled, if it is not already enabled, and PFC is disabled.
• 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.
iSCSI Optimization 548