Detection And Auto-Configuration For Dell Equallogic Arrays - Dell Force10 S4810P Configuration Manual

If no iSCSI traffic is detected for a session during a user-configurable aging period, the session data is
cleared.
If more than 256 simultaneous sessions are logged continuously , the following message displays indicating
the queue rate limit has been reached.
%STKUNIT2-M:CP %iSCSI-5-ISCSI_OPT_MAX_SESS_EXCEEDED: New iSCSI Session Ignored: ISID -
400001370000 InitiatorName - iqn.1991-05.com.microsoft:dt-brcd-cna-2 TargetName -
iqn.2001-05.com.equallogic:4-52aed6-b90d9446c-162466364804fa49-wj-v1 TSIH - 0"
Only sessions observed by the switch will be learnt; sessions flowing through an adjacent switch will not
be learnt. Session monitoring learns sessions that actually flow through the switch, it does not learn all
sessions in the entire topology.
After a switch is reloaded, any information exchanged during the initial handshake is not available. If the
switch picks up the communication after reloading, it would detect a session was in progress but could not
obtain complete information for it. Any incomplete information of this type would not be available in the
"show" commands.

Detection and Auto-configuration for Dell EqualLogic Arrays

The iSCSI optimization feature includes auto-provisioning support with the ability to detect directly
connected Dell EqualLogic storage arrays and automatically reconfigure the switch to enhance storage
traffic flows.
The switch uses the link layer discovery protocol (LLDP) to discover Dell EqualLogic devices on the
network. LLDP is enabled by default. For more information about LLDP, refer to
Discovery Protocol
The following message is displayed the first time a Dell EqualLogic array is detected and describes the
configuration changes that are automatically performed:
%STKUNIT0-M:CP %IFMGR-5-IFM_ISCSI_AUTO_CONFIG: This switch is being configured for optimal
conditions to support iSCSI traffic which will cause some automatic configuration to occur
including jumbo frames and flow-control on all ports; no storm control and spanning-tree port
fast to be enabled on the port of detection.
The following syslog message is generated the first time an EqualLogic array is detected:
%STKUNIT0-M:CP %LLDP-5-LLDP_EQL_DETECTED: EqualLogic Storage Array detected on interface Te 1/
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• At the first detection of an EqualLogic array, an MTU of 12000 is enabled on all ports and
port-channels (if it is has not already been enabled).
• Spanning-tree portfast is enabled on the interface identified by LLDP.
• Unicast storm control is disabled on the interface identified by LLDP.
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| iSCSI Optimization
(LLDP).
Chapter 30, Link Layer