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# Attach an IP interface to an iSCSI endpoint

Unisphere provides monitoring and management for Internet Small Computer Systems Interface (iSCSI) directors, iSCSI ports, iSCSI endpoints, IP interfaces, and IP routes.

## Steps

1. Select a storage system.
2. Select System > iSCSI to open the iSCSI dashboard.
3. Click IP Interface.
4. Select an IP interface and click Attach.
5. Select whether to attach to an existing or new iSCSI endpoint, and do one of the following depending on your selection:
   - Existing:
     1. Select an iSCSI endpoint from the list that is filtered by network ID and director.
   - New:
     1. Click Use Custom Name and type a value for the Endpoint Name. If you do not enter a value, the system generates a unique iqn for the endpoint name. If you enter a value, it must follow the following rules:
        - Start with iqn. or eui. strings.
        - Be composed of alphanumeric characters, colons, dashes, and periods.
        - Be less than, or equal to, 255 characters.
        - Be unique on the storage system.
     2. Optional: Type a value for TCP Port. The default value is 3260. Valid values range from 0 through 65535.
     3. Optional: Click Advanced Options to display the port flag properties for the endpoint being created. Select one or more of the following Port Flags:

        Volume Set Addressing | Enables the volume set addressing mode. When using volume set addressing, you must specify a four-digit address in the following range: (0)000-(0)007, (0)010-(0)017, and so on, to a maximum of (0)FF0-(0)FF7. The first digit must always be set to 0 (the storage systems do not currently support the upper range of volume set).
        Environ Set | Enables the environmental error reporting by the storage system to the host on the specific port
        Avoid Reset Broadcast | This option enables a SCSI bus reset to only occur to the port that received the reset (not broadcast to all channels).
        Disable Q Reset on UA | When enabled, a Unit Attention (UA) that is propagated from another director does not flush the queue for this volume on this director. Used for hosts that do not expect the queue to be flushed on a 0629 sense (only on a hard reset).
        Soft Reset | Supports SCSI soft reset on a port when enabled for a Bull GCOS-7 host
        SCSI 3 | Alters the inquiry data (when returned by any volume on the port) to report that the storage system supports the SCSI-3 protocol. When disabled, the SCSI-2 protocol is supported.
        SCSI Support1 | This option provides a stricter compliance with SCSI standards for managing volume identifiers, multiport endpoints, unit attention reports, and the absence of a volume at LUN 0.
        SPC2 Protocol Version | This flag should be enabled (default) in a Windows 2003 environment running Microsoft HCT test version 12.1. When setting this flag, the port must be offline.
        Open VMS | Enables an Open VMS fibre connection
        ISID Protected | Protected initiator session identifier. This flag applies to iSCSI endpoint only. It has no effect for FA or FCoE ports. When this flag is set on iSCSI endpoint, the system uses the ISID and iSCSI name to calculate the World Wide Name (WWN) in the Persistent Group Registration (PGR) record.

6. Click OK.
   If you switch between the New and Existing selections, the system only applies the changes from within your last selection.
7. Click OK to confirm your changes.

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