HP StorageWorks 8/80 HP StorageWorks Fabric OS 6.2 administrator guide (5697-0 - Page 307

DDS et 1 iS C S I virtual targets (V T s ) DD1 iS C S I initiator A VT 1 IP network VT 2 iS C S I initiator B DD2 VT 3 iS C S I gateway s ervic e Figure 38 Discovery domain set configuration example Switch-to-iSCSI initiator authentication iSCSI sessions are authenticated using CHAP (Challenge Handshake Authentication Protocol). The iSCSI gateway service supports the following three strategies for CHAP authentication: • One-way: Only the iSCSI VT authenticates the session. • Mutual: Both the iSCSI initiator and the iSCSI VT authenticate the session. • Binding user names: Specific user names can be bound to an iSCSI VT. Only those user names can be used for authentication during iSCSI login. NOTE: iSCSI gateway service does not support IPSec. Load balancing through connection redirection Connection redirection allows iSCSI sessions to be evenly distributed across ports on the same blade. Before the maximum number of connections is reached for any given port, logins are redirected to the next available port, resulting in an even distribution of sessions. This distribution occurs only during the first login phase. Existing connections are not redistributed when iSCSI ports change state from disabled to enabled or offline to online. Connection redirection does not need to be committed as a configuration parameter. It is independently enabled and disabled. Enabling and disabling connection redirection for load balancing 1. Connect to the switch and log in. 2. Enter the appropriate form of the iscsiSwCfg command for the operation you want to perform: To enable connection redirection, use the iscsiSwCfg --enableconn command. For HP StorageWorks 4/256 SAN Directors, the -s option can be used to enable connection redirection for specific slots, and the all option may be used to enable connection redirection for all slots. The following example enables connection redirection for ports on blades located in slots 3, 4, and 9. switch:admin> iscsiswcfg --enableconn -s 3,4,9 The operation completed successfully To disable connection redirection, use the iscsiSwCfg - -disableconn command. For the HP StorageWorks 4/256 SAN Director, the -s option can be used to disable Fabric OS 6.2 administrator guide 305