VMware VS4-ENT-PL-A - vSphere Enterprise Plus Setup Manual page 131

Many DHCP servers can PXE boot hosts. If you are using a version of DHCP for Microsoft Windows, see the
DHCP server documentation to determine how to pass the next-server and filename arguments to the
target machine.
gPXE Example
This example shows how to configure a ISC DHCP version 3.0 server to enable gPXE.
allow booting;
allow bootp;
# gPXE options
option space gpxe;
option gpxe-encap-opts code 175 = encapsulate gpxe;
option gpxe.bus-id code 177 = string;
class "pxeclients" {
match if substring(option vendor-class-identifier, 0, 9) = "PXEClient";
next-server TFTP server address;
if not exists gpxe.bus-id {
filename "/gpxelinux.0";
}
}
subnet Network address netmask Subnet Mask {
range Starting IP Address Ending IP Address;
}
When a machine attempts to PXE boot, the DHCP server provides an IP address and the location of the
binary file on the TFTP server. The IP address assigned is in the range defined in the subnet
gpxelinux.0
section of the configuration file.
PXELINUX (without gPXE) Example
This example shows how to configure a ISC DHCP version 3.0 server to enable PXELINUX.
#
# DHCP Server Configuration file.
# see /usr/share/doc/dhcp*/dhcpd.conf.sample
#
ddns-update-style ad-hoc;
allow booting;
allow bootp;
class "pxeclients" {
match if substring(option vendor-class-identifier, 0, 9) = "PXEClient";
next-server xxx.xxx.xx.xx;
filename = "pxelinux.0";
}
subnet 192.168.48.0 netmask 255.255.255.0 {
range 192.168.48.100 192.168.48.250;
}
When a machine attempts to PXE boot, the DHCP server provides an IP address and the location of the
binary file on the TFTP server. The IP address assigned is in the range defined in the subnet
pxelinux.0
section of the configuration file.
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Chapter 6 Before You Install ESXi
131