Technical data

Configuring Serial Lines
3.2 Setting Up a PPP Interface (Alpha Only)
Alternatively, use the sysconfig utility. First, define the TCP/IP Services foreign
commands:
$ @SYS$MANAGER:TCPIP$DEFINE_COMMANDS.COM
Enter the following SYSCONFIG commands:
$ SYSCONFIG -r inet ipforwarding=1
$ SYSCONFIG -r inet ipgateway=1
$ SYSCONFIG -q inet
To send notifications automatically on all connected LANs when new hosts or
networks become reachable, use dynamic routing with the /SUPPLY option. For
example, every time a PPP link is set up to a new subnetwork, RIP (Routing
Information Protocol) advertises a corresponding route.
For example, enter the following commands:
TCPIP> START ROUTING /SUPPLY
TCPIP> SET CONFIGURATION START ROUTING /SUPPLY
If your PPP and Ethernet interfaces are in the same network, a route is created
automatically for the client hosts and an ARP proxy is advertised.
3.2.1.6 Initiating a PPP Connection
You use the OpenVMS PPP utility (PPPD) and associated commands to establish
and manage a temporary PPP connection from an OpenVMS Alpha client host
to an OpenVMS dialup provider or terminal server. Note that NETMBX and
OPER privileges are required to establish a successful connection and to display
OPCOM messages.
To invoke PPPD, enter the DCL command PPPD. The PPPD commands are
summarized in the following table. For detailed information about PPPD
commands and qualifiers, enter the HELP command.
Command Function
CONNECT Establishes a network connection through the current physical port or a
specified remote port.
DIAL_OUT Allows direct access to a device in order to dial out over a modem or link
to an external device.
DISCONNECT Terminates the network connection and returns control to the terminal
driver.
EXIT Leaves the utility and returns you to the DCL command prompt ($).
HELP Displays help text for PPPD commands.
SET Determines the device and line characteristics for the specified terminal.
SHOW Displays the device and line characteristics of the specified terminal.
To initiate a PPP connection from an OpenVMS Alpha client to an OpenVMS
dialup provider or terminal server, follow these steps.
1. Confirm that you have NETMBX and OPER privileges.
2. Use the PPPD command DIAL_OUT and specify the terminal device. After
the atdt command, enter the telephone number of the dialup provider or
terminal server. (With some modems, you might need to type the number
again until dialing begins.)
3–8 Configuring Serial Lines