Configuring Detection and Ports for Dell Compellent ArraysTo configure a port connected to a Dell Compellent storage array, use the following command.• Configure a port connected to a Dell Compellent storage array.INTERFACE Configuration modeiscsi profile-compellentThe command configures a port for the best iSCSI traffic conditions.The following message displays the first time you use the iscsi profile-compellent command toconfigure a port connected to a Dell Compellent storage array and describes the configuration changesthat are automatically performed:%STKUNIT0-M:CP %IFMGR-5-IFM_ISCSI_AUTO_CONFIG: This switch is being configuredfor optimalconditions to support iSCSI traffic which will cause some automaticconfiguration to occurincluding jumbo frames and flow-control on all ports; no storm control andspanning-tree portfast to be enabled on the port of detection.After you execute the iscsi profile-compellent command, the following actions occur:• Jumbo frame size is set to 12000 for all interfaces on all ports and port-channels, if it is not alreadyenabled.• Spanning-tree portfast is enabled on the interface.• Unicast storm control is disabled on the interface.Enter the iscsi profile-compellent command in INTERFACE Configuration mode; for example:Dell(conf-if-te-o/50# iscsi profile-compellentSynchronizing iSCSI Sessions Learned on VLT-Lags with VLT-PeerThe following behavior occurs during synchronization of iSCSI sessions.• If the iSCSI login request packet is received on a port belonging to a VLT lag, the information is syncedto the VLT peer and the connection is associated with this interface.• Additional updates to connections (including aging updates) that are learnt on VLT lag members aresynced to the peer.• When receiving an iSCSI login request on a non-VLT interface followed by a response from a VLTinterface, the session is not synced since it is initially learnt on a non-VLT interface through therequest packet.• The peer generates a new connection log that sees the login response packet. If the login responsepacket uses the ICL path, it is seen by both the peers, which in turn generate logs for this connection.Enable and Disable iSCSI OptimizationThe following describes enabling and disabling iSCSI optimizaiton.NOTE: iSCSI monitoring is disabled by default. iSCSI auto-configuration and auto-detection isenabled by default.If you enable iSCSI, flow control is automatically enabled on all interfaces. To disable flow control on allinterfaces, use the no flow control rx on tx off command and save the configuration. To disable464 iSCSI Optimization
