Select the interface(s) you want to add to the target portal group and deselect any interface(s) you want to remove from the target portal group. An interface does not have to be enabled for you to assign it to the target portal group.
The network interfaces in a target portal group collectively coordinate an iSCSI session. All TCP connections within an iSCSI session must use interfaces assigned to the same target portal group. Each interface can be assigned to one and only one target portal group.
Data ONTAP can be configured to support multi-connection iSCSI sessions. For more information, see the Data ONTAP Block Access Management Guide for iSCSI and FCP.
When assigning interfaces to target portal groups for clustered filers, make sure the interfaces on each filer fail over to an interface assigned to a target portal group with the same tag on the partner filer. If the target portal group tags do not match at the time of the takeover operation, the initiator will see a different mapping between the target portal and its target portal group. The mismatch can prevent the initiator from reestablishing the multi-connection session to the takeover filer.