SVS200 (T1714-96008, June 2006)

LUN Configuration and Security Manager XP user guide for the XP12000/XP10000/SVS200 43

• Port number: You must assign part numbers to iSCSI ports when configuring iSCSI environments. Use

LUN Manager to specify a decimal port number within the range of 1 to 65535. A port number’s

initial value is 3260.

• Keep-alive timer: You must specify the Keep-alive timer when configuring iSCSI environments. The

Keep-alive timer is used when there is a connection between an iSCSI port and another iSCSI node.

For example, if the keep-alive timer is set to 60 seconds, the array checks whether packet

communications occurred between an iSCSI port and another iSCSI node (such as a host bus adapter

or switching hub) every 60 seconds.

Use LUN Manager to specify a value within the range of 0 to 64,800 seconds. The Keep-alive timer’s

initial value is 60 seconds.

• Whether to register iSCSI ports in iSNS servers: The iSNS server is a server computer on which an

iSNS service is installed. iSNS is an acronym for Internet Storage Name Service. This server manages

IP addresses and iSCSI names of iSCSI ports. Using iSNS servers is optional. If you configure and use

iSNS servers, iSCSI ports are easily discovered and managed.

NOTE: For more information about configuring iSNS servers, see the iSNS-related

documentation.

• iSNS server’s IP address: To use an iSNS server, you must specify the iSNS server’s IP address.

• iSNS server’s TCP port number: To use an iSNS server, you must specify the iSNS server’s TCP port

number.

NOTE: Specify 3205 as the TCP port number if you use Microsoft® iSNS Server as the iSNS

server. If you specify other than 3205, you cannot register iSCSI ports in the iSNS server.

Status of connections between hosts and the array

Use LUN Manager to issue a ping command from an array iSCSI port to a host. The ping command

checks whether the host and array can communicate with each other. If the host responds to the ping

command, the host and array can communicate with each other. For more information, see ”Checking the

status of the connection between hosts and the array (iSCSI environments only)” on page 103.

User authentication (Fibre Channel environments)

When configuring Fibre Channel environments, you can use LUN Manager to set user authentication

between the array’s ports and hosts. In Fibre Channel environments, ports and hosts use Null DH-CHAP

(Challenge Handshake Authentication Protocol with a Null Diffie-Hellmann algorithm) as the

authentication method. This section provides an overview of user authentication.

NOTE: Throughout this user guide, Null DH-CHAP is sometimes referred to as CHAP.

User authentication operations and settings

User authentication operations in Fibre Channel environments contain the following phases:

1. A host group of the array authenticates a host attempting to connect (authentication of hosts).

2. The host authenticates the connection-target host group of the array (authentication of host groups).

CAUTION: Because host bus adapters currently do not support this function, this authentication

phase is not used in Fibre Channel environments.

3. A target port of the array authenticates a Fibre Channel switch attempting to connect (authentication of

Fibre Channel switches).