iX 6.5)

64 Chapter4

BOOTP Service

Troubleshooting bootpd

The BOOTPQRY program is a diagnostic tool used to check the

conﬁguration of bootpd. It uses the supplied parameters to construct a

boot request to send to a BOOTP server. It prints the contents of the boot

reply, including the client’s Internet address, the name of a boot ﬁle,

and the name and address of the server that sent the reply. BOOTPQRY

formats and prints RFC1048 or CMU-style vendor information included

in the reply.

The boot request packet is broadcast on the BOOTP server port.

Responding servers return a bootreply packet on the BOOTP client port.

BOOTPQRY can only display bootreply packets when the BOOTP server

broadcasts the reply on the client port or when the hardware address

and IP address supplied in the boot request are those of the host on

which BOOTPQRY is run.

To use the BOOTPQRY program to troubleshoot bootpd, do the following:

1. Open the bootpd conﬁguration ﬁle and look for the entry describing

the network device you want to test.

2. When you ﬁnd the entry, add the ba tag to it. This will force bootpd

to broadcast the reply so that BOOTPQRY can display it.

3. Run the BOOTPQRY program by entering the BOOTPQRY command

followed by the hardware address of the network you are testing,

expressed in hexadecimal notation. For example, at the CI prompt

you would enter:

:BOOTPQRY.NET.SYS 08000902CA00

Or, from the POSIX shell, you would enter:

$/etc/bootpquery 08000902CA00

Diagnostic Options

The following options provide the information for the boot request:

Option Purpose

haddr The hardware address of the BOOTP client to use in the

boot request. A BOOTP server responds if it has

conﬁguration information for a host with this link level

address.

htype The type of address speciﬁed as haddr, which may be

ether or ieee802. The default address type is ether.

-i<ipaddr> The Internet address of the BOOTP client <ipaddr> to

use in the boot request. If the BOOTP client doesn’t know

its IP address, the BOOTP server supplies it in the