Dell Force10 MXL Blade - Enabling and Disabling Iscsi Optimization

iSCSI Optimization | 281
After you execute the iscsi profile-compellent command, the following actions occur:
• Jumbo frame size is set to 1200 for all interfaces on all ports and port-channels, if it is not already
enabled.
• Spanning-tree portfast is enabled on the interface identified by LLDP if the port is in L2 mode.
• Unicast storm control is disabled on the interface identified by LLDP.
You must enter the
iscsi profile-compellent command in interface configuration mode; for example:
FTOS(conf-if-te-0/50# iscsi profile-compellent
Enabling and Disabling iSCSI Optimization
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 is displayed 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: iSCSI optimization is enabled by default.
Note: When you enable the iSCSI feature using the iscsi enable command, flow control settings are set to
rx on tx off on all interfaces.