Installing and Administering Internet Services

180 Chapter 5

Conﬁguring TFTP and BOOTP Servers

Adding Client or Relay Information

A relay entry can contain relay parameters for an individual system or

for a group of systems. If a BOOTP client does not have an individual

entry in the BOOTP server’s /etc/bootptab ﬁle, the group relay

entries are searched. The ﬁrst group relay entry that matches the

BOOTP client is used.

Examples of Adding BOOTP Clients

This section shows examples of adding entries to the /etc/bootptab

ﬁle. The ﬁrst example shows how to conﬁgure a BOOTP server for an

HP 700/X terminal. The second example shows how to conﬁgure a

BOOTP server to relay a client’s bootrequest to another server.

Example 1: Adding an HP 700/X Terminal as a Client

Figure 5-3 shows the network conﬁguration for this example.

Figure 5-3 Example Conﬁguration: HP 700/X Terminal as Client

The following information is added to the /etc/bootptab ﬁle on the

BOOTP server (hpserver):

xterm01: hn: ht=ether: ha=080009030165: \

ip=15.19.8.37: sm=255.255.248.0: \

gw=15.19.8.1: ds=15.19.8.119: bf=/xterminal

To verify the new /etc/bootptab entry, do the following on the BOOTP

server:

1. Add the ba (broadcast address) tag to the entry so that the bootreply

is not sent directly to xterm01. This allows the bootpquery

diagnostic tool to intercept any bootreply packets for xterm01.

Client

BOOTP

Server

Network subnet mask: 255.255.248.0

Host name: xterm01

IP address: 15.19.8.37

Hardware address: 080009030165

Host name: hpserver