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Solaris Express Installation Guide: Network-Based Installations

Sequence of Events in a WAN Boot Installation

Figure 9–1 shows the basic sequence of events in a WAN boot installation. In this figure, a SPARC based client retrieves configuration data and installation files from a web server and an install server over a WAN.

Figure 9–1 Sequence of Events in a WAN Boot Installation

The context describes the graphic.

  1. You boot the client in one of the following ways.

    • Boot from the network by setting network interface variables in the Open Boot PROM (OBP).

    • Boot from the network with the DHCP option.

    • Boot from a local CD-ROM.

  2. The client OBP obtains configuration information from one of the following sources.

    • From boot argument values that are typed at the command line by the user

    • From the DHCP server, if the network uses DHCP

  3. The client OBP requests the WAN boot second level boot program (wanboot).

    The client OBP downloads the wanboot program from the following sources.

    • From a special web server, called the WAN boot server, by using the Hyper Text Transfer Protocol (HTTP)

    • From a local CD-ROM (not shown in the figure)

  4. The wanboot program requests the client configuration information from the WAN boot server.

  5. The wanboot program downloads configuration files that are transmitted by the wanboot-cgi program from the WAN boot server. The configuration files are transmitted to the client as the WAN boot file system.

  6. The wanboot program requests the download of the WAN boot miniroot from the WAN boot server.

  7. The wanboot program downloads the WAN boot miniroot from the WAN boot server by using HTTP or secure HTTP.

  8. The wanboot program loads and executes the UNIX kernel from the WAN boot miniroot.

  9. The UNIX kernel locates and mounts the WAN boot file system for use by the Solaris installation program.

  10. The installation program requests the download of a Solaris Flash archive and custom JumpStart files from an install server.

    The installation program downloads the archive and custom JumpStart files over an HTTP or HTTPS connection.

  11. The installation program performs a custom JumpStart installation to install the Solaris Flash archive on the client.