Adaptec 1130U2 - Storage Controller RAID)- U2W SCSI 80 MBps Specifications download pdf (Page 159)

The PXELINUX and gPXE environments allow your target machine to boot the ESXi installer. PXELINUX is

part of the SYSLINUX package, which can be found at

http://www.kernel.org/pub/linux/utils/boot/syslinux/, although many Linux distributions include it. Many

versions of PXELINUX also include gPXE. Some distributions, such as Red Hat Enterprise Linux version 5.3,

include earlier versions of PXELINUX that do not include gPXE.

If you do not use gPXE, you might experience problems while booting the ESXi installer on a heavily loaded

network TFTP is sometimes unreliable for transferring large amounts of data. If you use PXELINUX without

gPXE, the pxelinux.0 binary file, the configuration file, the kernel, and other files are transferred by TFTP. If

you use gPXE, only the gpxelinux.0 binary file and configuration file are transferred by TFTP. With gPXE,

you can use a Web server to transfer the kernel and other files required to boot the ESXi installer.

NOTE VMware tests PXE booting with PXELINUX version 3.86. This is not a statement of limited support.

For support of third-party agents that you use to set up your PXE booting infrastructure, contact the vendor.

Figure 7‑1. Overview of PXE Boot Installation Process

DHCP server

Web server

ESXi target host

ESXi host

Give me an IP

for the virtual

network adapter

UDP

IP & TFTP server

kernel

TCP for gPXELINUX

UDP for PXELINUX

UDP

Give me

the kernel

Give me an IP

for the kernel

TFTP server

gpxelinux.0 or pxelinux.0

UDP

Give me the

network boot loader

scripts depot

Installer

starts

ks.cfg

TCP

Give me an

installation script

Chapter 7 Upgrading and Migrating Your Hosts

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