Lanfreecommmethod

The lanfreecommmethod option specifies the communications protocol between the IBM® Storage Protect client and Storage Agent. This enables processing between the client and the SAN-attached storage device.

Linux operating systems Oracle Solaris operating
systems AIX operating systems If you are using LAN failover, you must have lanfreecommmethod in the dsm.sys file within a server stanza.

Windows operating systems If you are using LAN failover, you must have lanfreecommmethod TCPip in the client options file (dsm.opt).

Linux operating systems Oracle Solaris operating
systems AIX operating systems For AIX®, Linux® and Solaris, use the lanfreeshmport option to specify the shared memory port number where the Storage Agent is listening.

Windows operating systems For Windows, use the lanfreeshmport option to uniquely identify the storage agent to which the client is trying to connect.

Supported Clients

Linux operating systems Oracle Solaris operating
systems AIX operating systems This option is valid for AIX, Linux, and Oracle Solaris clients.

Windows operating systems This option is valid for all Windows clients.

Options File

Linux operating systems Oracle Solaris operating
systems AIX operating systems Place this option in the dsm.sys file within a server stanza.

Windows operating systems Place this option in the client options file (dsm.opt).

Syntax

Parameters

commmethod

Specifies the supported protocol for the backup-archive client:

TCPip: The Transmission Control Protocol/Internet Protocol (TCP/IP) communication method.
Use the lanfreetcpport option to specify the TCP/IP port number where the Storage Agent is listening. The TCP/IP communication method is the default for non-root users on all supported platforms.
TCPip: The Transmission Control Protocol/Internet Protocol (TCP/IP) communication method.
Use the lanfreetcpport option to specify the TCP/IP port number where the Storage Agent is listening.
V6Tcpip: Indicates that either TCP/IP v4 or v6 should be used, depending on the system configuration and results of a domain name service lookup. The only time this is not true is when dsmc schedule is used and schedmode is prompt. A valid DNS environment must be available.
NAMedpipes: The interprocess communication method that permits message data streams to pass between a client and a server. This is the default. Do not specify the lanfreetcpport option if you want to use the NAMedpipes communication method for LAN-free communication.
SHAREdmem: Use the shared memory communication method when the client and Storage Agent are running on the same system. Shared memory provides better performance than the TCP/IP protocol. The backup-archive client must have local administrator permissions.
SHAREdmem: Use the shared memory communication method when the client and Storage Agent are running on the same system. Shared memory provides better performance than the TCP/IP protocol. This is the default communication method for AIX, Linux, and Solaris root users. When specifying this communication method on AIX, the backup-archive client user can be logged in as root or non-root, as long as the Storage Agent is running as root. If the Storage Agent is not running as root, the user ID running the backup-archive client must match the user ID running the Storage Agent.

Examples

Options file:

lanfreecommmethod tcp

Use only TCP/IP v4

lanfreecommmethod V6Tcpip

Use both TCP/IP v4 or v6, depending on how the system is configured and the results of a domain name service lookup.

Command line:

-lanfreec=tcp

-lanfreec=V6Tcpip

This option is valid only on the initial command line. It is not valid in interactive mode.