6.5.1

Example of Booting Using TFTP with IPv6
This example shows how to configure an ISC DHCPv6 server to boot ESXi using a TFTP server at IPv6
address xxxx:xxxx:xxxx:xxxx::xxxx.
#
# ISC DHCPv6 server configuration file snippet. This is not a complete
# configuration file; see the ISC server documentation for details on
# how to configure the DHCP server.
#
allow booting;
allow bootp;
option dhcp6.bootfile-url code 59 = string;
option dhcp6.bootfile-url "tftp://[xxxx:xxxx:xxxx:xxxx::xxxx]/mboot.efi";
When a machine attempts to PXE boot, the DHCP server provides an IP address and the location of the
mboot.efi binary file on the TFTP server.
Example of Booting Using HTTP with IPv4
This example shows how to configure an ISC DHCP server to boot ESXi using a Web server at IPv4
address xxx.xxx.xxx.xxx. The example uses gPXELINUX for legacy BIOS hosts and iPXE for UEFI hosts.
#
# ISC DHCPv6 server configuration file snippet. This is not a complete
# configuration file; see the ISC server documentation for details on
# how to configure the DHCP server.
#
allow booting;
allow bootp;
option client-system-arch code 93 = unsigned integer 16;
class "pxeclients" {
match if substring(option vendor-class-identifier, 0, 9) = "PXEClient";
next-server xxx.xxx.xxx.xxx;
if option client-system-arch = 00:07 or option client-system-arch = 00:09 {
if exists user-class and option user-class = "iPXE" {
# Instruct iPXE to load mboot.efi as secondary bootloader
filename = "mboot.efi";
} else {
# Load the snponly.efi configuration of iPXE as initial bootloader
filename = "snponly.efi";
}
} else {
filename "gpxelinux.0";
}
}
When a machine attempts to PXE boot, the DHCP server provides an IP address and the location of the
gpxelinux.0 or snponly.efi binary file on the TFTP server. In the UEFI case, iPXE then asks the
DHCP server for the next file to load, and this time the server returns mboot.efi as the filename.
vSphere Installation and Setup
VMware, Inc. 39