Administrator Guide

● iSCSI DCBx TLVs are supported.
NOTE: After a switch is reloaded, powercycled, or upgraded, any information exchanged during the initial handshake is not
available. If the switch establishes communication after reloading, it detects that a session was in progress but could not
obtain complete information for it. Any incomplete information is not available in the show commands.
NOTE: After a switch is reloaded, powercycled, or upgraded, the system may display the ACL_AGENT-3-
ISCSI_OPT_MAX_SESS_LIMIT_REACHED: Monitored iSCSI sessions reached maximum limit log
message. This cannot be inferred as the maximum supported iSCSI sessions are reached. Also, number of iSCSI sessions
displayed on the system may show any number equal to or less than the maximum.
The following illustration shows iSCSI optimization between servers and a storage array in which a stack of three switches
connect installed servers (iSCSI initiators) to a storage array (iSCSI targets) in a SAN network. iSCSI optimization running on
the master switch is configured to use dot1p priority-queue assignments to ensure that iSCSI traffic in these sessions receives
priority treatment when forwarded on stacked switch hardware.
Figure 62. iSCSI Optimization Example
iSCSI Optimization
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