Configuring and Managing MPE/iX Internet Services (August 2002)

Chapter 4
BOOTP Service
The bootpd Configuration File
56
Tags Used in bootpd Configuration File
You can use any of the following tags to enter client or relay data into the bootpd configuration file.
Tag Description
ba or ba=address Tells bootpd to broadcast the boot reply to the client. If you specify no
value for ba, bootpd sends the boot reply on the configured broadcast
address of each network interface on the server’s system. If you
specify an IP-address for its value, bootpd sends the boot reply to a
specific IP or broadcast address. Use the ba tag only for diagnostic
purposes, for example when debugging boot replies with BOOTPQRY.
bf=filename Specifies the filename, in Hierarchical File Structure (HFS) syntax, of
the bootfile that the client should download. The client’s boot request,
and the values of the hd and bf tags, determine the contents of the
bootfile field in the boot reply packet.
bs=size or bs Specifies the size of the bootfile in 512-octet blocks, expressed as a
decimal, octal, or hexadecimal integer. Or, if you omit the value,
bootpd will automatically calculate the bootfile size at each request.
ds=ip address list Specifies the IP address of one or more RFC1034 Domain Name
servers.
gw=ip address list Specifies the IP address of one or more gateways for the client’s
subnet. If you prefer one of multiple gateways, list it first.
ha=hardware-address Specifies the hardware address of the client in hexadecimal. You may
include periods and/or a leading 0x for readability. The ha tag must be
preceded by the ht tag either explicitly or implicitly; see tc below.
hd=home-directory Specifies an HFS directory name to which the bootfile is appended
(see bf tag above). The default value is (/).
hn Directs bootpd to send the client’s hostname in the boot reply. The
BOOTP daemon attempts to send the entire hostname as it is specified
in the configuration file. If this cannot fit into the reply packet, it
attempts to shorten the name to just the host field (up to the first
period, if present) and send that. In no case will bootpd send an
arbitrarily truncated hostname. If nothing reasonable can fit, it sends
nothing.
ht=hardware-type Specifies the hardware type code. The hardware-type can be an
unsigned decimal, octal, or hexadecimal integer corresponding to one
of the ARP Hardware Type codes specified in RFA1010. The
HP e3000 implementation will support ether for ethernet networks
and ieee802 for IEEE 802.3 networks.
ip=ip address Specifies the IP address of the BOOTP client.
sm=subnet-mask Specifies the client’s subnet mask as a single IP address.