BOOTP Troubleshooting
Troubleshooting
B - 2
B.2 BOOTP Troubleshooting
BOOTP failure does not disable the unit from booting. If the BOOTP request fails even though you
have configured your host to respond to the request, check the following areas:
B.3 TFTP Troubleshooting
If the TFTP request fails even though you have configured your host to respond to the request,
check the areas discussed in the following table.
Table B-2:
BOOTP Troubleshooting
Area to Check
Explanation
Is BOOTP in your
/etc/services
file?
BOOTP must be in the /etc/services file as a real TCP/IP
service. It must not be commented out.
Is the MSS in the
loadhost’s /etc/hosts file?
The MSS must be in this file for the host to answer a BOOTP
or TFTP request.
Is the download file in
the right directory? Is it
world-readable?
The download file must be in the correct directory and be
world-readable for the BOOTP request to be
answered.BOOTP implementations frequently add a default
pathname to the download filename if no explicit path is
present in the configuration file. You should generally
specify the complete pathname for the download file in the
BOOTP configuration file.
Are the MSS and the host
in the same IP network?
Some hosts do not allow BOOTP replies across IP networks.
For example, if the MSS’s IP address is 192.0.1.10 and the
host’s is 192.0.2.30, some host operating systems will not
provide BOOTP replies to the MSS. Use a host that is
running a different operating system, or change the MSS so
that it is on the same IP network as the host.
Table B-3:
TFTP Troubleshooting
Area to Check
Explanation
Is TFTP enabled on
the loadhost?
Ensure that the /etc/inetd.conf file has an uncommented line
enabling the TFTP daemon. Machines may have the TFTP
daemon line commented out.
If the /etc/inetd.conf file has to be modified, the TCP/IP
server process (daemon) has to be told of this via a signal.
Find the process ID (PID) of the inet daemon, and then signal
the process. Normally, the process is signalled by sending it a
HUP signal (kill -HUP nnnnn).
The /etc/inetd.conf or /etc/netd.conf file is re-read whenever
the UNIX host boots. See the man pages (man inetd) for
more information.
Is the filename
correct?
The name and case of the software download file must be
correct. The software file names are uppercase, but can be
renamed. The server will look for uppercase names by
default.
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