Administrator Guide

• Target’s IP Address
• Initiator dened session identier (ISID)
• Initiator’s iSCSI qualied name (IQN)
• Target’s IQN
• Initiator’s TCP Port
• Target’s TCP Port
If no iSCSI trac is detected for a session during a user-congurable aging period, the session data is cleared.
Detection and Auto-Conguration 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 recongure the switch to enhance storage trac ows.
The MXL 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 Link Layer Discovery Protocol (LLDP).
The following message displays the rst time a Dell EqualLogic array is detected and describes the conguration 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 rst time an EqualLogic array is detected:
%STKUNIT0-M:CP %LLDP-5-LLDP_EQL_DETECTED: EqualLogic Storage Array detected on interface Te
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• At the rst detection of an EqualLogic array, an MTU of 12000 is enabled on all ports and port-channels (if it has not already
been enabled).
• Spanning-tree portfast is enabled on the interface LLDP identies.
• Unicast storm control is disabled on the interface LLDP identies.
Conguring Detection and Ports for Dell Compellent Arrays
For the best iSCSI trac conditions, the MXL switch auto-congures a port connected to a Dell Compellent storage array, when
congured as compellent connected port through CLI.
The following message displays the rst time a Dell Compellent storage array is detected and describes the conguration 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 MXL switch auto-congures as follows:
• At the rst detection, an MTU of 12000 is enabled on all ports and port-channels (if it is not already enabled).
• Spanning-tree portfast is enabled on the interface identied by CLI, if the port is in L2 mode.
• Unicast storm control is disabled on the interface identied by CLI.
iSCSI Optimization: Operation
iSCSI optimization requires LLDP to be enabled. LLDP is enabled by default on MXL switch.
When the MXL auto-congures with iSCSI enabled, the following actions occurs:
• Link-level ow control is enabled on PFC disabled interfaces.
• iSCSI session snooping is enabled.
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iSCSI Optimization