• 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.
Default iSCSI Optimization Values
The following table lists the default values for the iSCSI optimization feature.
Table 33. iSCSI Optimization Defaults
Parameter Default Value
iSCSI Optimization global setting Disabled on the S4810 and S4820T.
iSCSI CoS mode (802.1p priority queue mapping)
iSCSI CoS Packet classification When you enable iSCSI, iSCSI packets are queued
based on dot1p, instead of DSCP values.
VLAN priority tag iSCSI flows are assigned by default to dot1p priority
4 without the remark setting.
DSCP None: user-configurable.
Remark Not configured.
iSCSI session aging time 10 minutes
iSCSI optimization target ports iSCSI well-known ports 3260 and 860 are
configured as default (with no IP address or name)
but can be removed as any other configured
target.
iSCSI session monitoring Disabled. The CAM allocation for iSCSI is set to
zero (0).
480 iSCSI Optimization