Installing and Administering PPP

82 Chapter 4

Common pppd Options

IP Routing Tips

Figure 4-1

#!/bin/sh

PATH=/usr/bin:/usr/etc:/etc:/bin

mesg n

stty -tostop

exec pppd `hostname`: idle 180

Designate subnet 6 for remote machines. Assign nomad the IP address

134.19.6.17. The PPP daemon on nomad would be started in the

Autostart script as:

pppd 134.19.6.17:134.19.5.22 auto idle 180

or, if all the names can be found in the local /etc/hosts (or resolved via

NIS/YP, NetInfo, the Domain Name Service, or some other mechanism

without ﬁrst needing to bring up the PPP link), it could look like

pppd nomad:alpha auto idle 180

The next line in nomad’s Autostart would set up an IP route through

the dial-in gateway:

route add net 134.19.0.0 134.19.5.22 1

Alternatively, and necessarily if the LAN were also connected to the

Internet:

route add default alpha 1

Similarly, the pppd on alpha would be started as

pppd alpha:nomad auto idle 180

bravo needs to have a network route for 134.19.6.0 pointing through

alpha.

route add net 134.19.6.0 alpha 1