Installing and Administering PPP

Chapter 2 25
Setting Up PPP Connections
Configuration Overview
After PPP connections are configured on both systems and robin is
re-booted, the Autostart file on robin starts pppd for an on-demand
connection from robin to lark. If IP traffic is initiated to lark, the
following occurs, as shown in Figure 2-2:
Figure 2-2 PPP Connection Example (continued)
1. pppd searches the Systems file on robin for an entry in the name
field that matches lark’s hostname or IP address.
2. When a match of lark’s hostname or IP address is found in the
Systems file, the speed field in the matching entry is noted. The
Devices file is then searched for an entry that matches the speed
field in the Systems file entry.
robin
lark
IP traffic to “lark”
Systems file: name ... speed ... chat script
Devices file: dialer ... speed ...
Dialers file: dialer
1
2
3
4
lark is dialed
/etc/passwd file:
login and password sent
user ID ... password ... Login
5
Start pppd on lark
6, 7
to communicate
with robin