Users Guide

● Starting from release 10.4.1.1, when you perform a fresh installation of OS10, iSCSI autoconfig is enabled and flowcontrol
receive is set to on. However, when you upgrade from an earlier release to release 10.4.1.1 or later, the existing iSCSI
configuration is retained and the flowcontrol receive could be set to on or off, depending on the iSCSI configuration before
the upgrade.
● When you re-configure the iSCSI TCP ports and IP addresses of target storage devices at the same time using the iscsi
target port command, iSCSI optimization may fail on interfaces connected to the devices. To successfully enable iSSCI
optimization, enter only the new TCP port number(s) in the command and do not specify an IP address
● On an S3048-ON switch, iSCSI auto-configuration is disabled, by default. You must manually enable iSCSI optimization on
the switch using the iscsi enable command.
iSCSI synchronization on VLT
An iSCSI session is learned on a VLT LAG during the following scenarios:
● If the iSCSI session receives control packets, as login-request or login-response, on the VLT LAG.
● If the iSCSI session does not receive control packets but receives data packets on the VLT LAG. This happens when you
enable iSCSI session monitoring after the iSCSI session starts.
The information learned about iSCSI sessions on VLT LAGs synchronizes with the VLT peers.
iSCSI session synchronization happens based on various scenarios:
● If the iSCSI login request is received on an interface that belongs to a VLT LAG, the information synchronizes with VLT peer
and the connection associates with the interface.
● Any updates to connections, including aging updates that are learned on VLT LAG members synchronizes with the VLT peer.
● If the iSCSI login request is received on a non-VLT interface, followed by a response from a VLT interface, the connection is
associated with the VLT LAG interface and the information about the session synchronizes with the VLT peer.
● When a VLT interconnect comes up, information about iSCSI sessions learned on the VLT LAG exchanges between the VLT-
peers.
iSCSI commands
iscsi aging
Sets the aging time for monitored iSCSI sessions.
Syntax
iscsi aging [time minutes]
Parameters time minutes — Enter the aging time in minutes allowed for monitoring iSCSI sessions, from 5 to
43,200.
Default 10 minutes
Command Mode CONFIGURATION
Usage
Information
Configure the aging time that is allowed for monitored iSCSI sessions on TCP ports before the session
closes. The no version of this command disables the aging time.
Example
OS10(config)# iscsi aging time 30
Supported
Releases
10.3.0E or later
iscsi enable
Enables iSCSI autodetection of attached storage arrays and switch autoconfiguration.
Syntax
iscsi enable
Parameter None
Default
None
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