IBM Certification Study Guide AIX V4.3 System Support

12.2 Setting Up the PPP Control Link

The following terms are used in this section for discussion:

PPP Subsystem Name: A unique name to identify the PPP server.
Max Server Connections: The greatest number of clients that may be served at any one time. Typically, this is the number of dial-in modems on the system.
Max Client Connections: The greatest number of outgoing connections at any one time. Typically this is the number of dial-out modems on the system
Max Demand Interfaces: The greatest number of peer connections allowed at any one time. These connections are established on demand, meaning they are triggered by an event. For example, a ping to the remote PPP host.
Max IP Interfaces: The total of the PPP interfaces for the system that is the sum of max server connections, max client connections and max demand connections.
Max Async HDLC Attachments: The number of concurrently active PPP sessions allowed. Typically equal to the Max IP Interface.

The following settings are examples used in this section, for configuring the control PPP daemon:

Note

Normally all other options on the SMIT screen are left at their default values.
You must be root to start PPP and to have access to most files.

Note
Normally all other options on the SMIT screen are left at their default values. You must be root to start PPP and to have access to most files.

The following procedure guides you through creating the PPP Control Link.

On server mickey, add the link through SMIT by entering the command:
```
smitty ppp
```
Choose the option, Link Control Configuration.
Choose the option, Add A Link Configuration.
Fill in the accented fields, as follows, with the values specified previously:

Figure 113: Link Configuration Screen
Press Enter to add the Link.

This process created a file /etc/ppp/lcp_config. You can examine this file as follows:

# cat /etc/ppp/lcp_config
server_name pppserver
lcp_server 1
lcp_client 0
lcp_demand 0
num_if 1
num_hdlc 1