Technical data

Configuring Serial Lines
3.3 Setting Up a SLIP Interface
Use the following commands to set up the SLIP interface:
• SET INTERFACE SLn, where n is the number of the interface. If you
omit the interface number, SL0 is assumed. This command takes effect
immediately and stays in effect until the next TCP/IP Services shutdown.
• SET CONFIGURATION INTERFACE SLn, where n is the number of the
interface. If you omit the interface number, SL0 is assumed. This command
makes the change part of the permanent configuration. The change takes
effect at the next product startup.
Table 3–3 describes the command qualifiers used for configuring SLIP interfaces.
Table 3–3 Command Qualifiers Used for Configuring SLIP
Qualifier Description
/[NO]AUTO_START Optional. The default is /AUTO_START.
Automatically creates the interface on startup.
/COMPRESS=[ON|OFF|AUTOMATIC] Optional. The default is no compression.
Enables or disables TCP header compression
(CSLIP). With /COMPRESS=AUTOMATIC,
compression remains off unless the remote
host begins to use it.
/[NO]FLOWCONTROL Optional. The default is No flow control.
Enables the special handling of XON and
XOFF characters to work properly with
modems that are configured to interpret
these characters locally.
Specify /FLOWCONTROL only if the host
at the other end of the line is another host
running TCP/IP Services. If you cannot use
/FLOWCONTROL, configure your modem
to pass all the XON and XOFF characters
through transparently.
/HOST=(host_name, IP_address) Required. Host name or IP address of the
local host. If your host is multihomed, you
must specify an address in dotted-decimal
notation.
/NETWORK_MASK=subnet_address Required. The subnet mask of the local SLIP
interface in dotted-decimal notation.
/SERIAL_DEVICE=device Required for hard-wired or dedicated
modem connections. Optional for dynamic
connections.
Identifies the OpenVMS device name assigned
to the SLIP interface, for example, TTA1.
For example, the following command configures SLIP interface SL5, using
the local IP address assigned to host CROW, with a subnetwork mask of
255.255.255.0. The interface uses the terminal device TTA3:. The /COMPRESS
qualifier enables TCP header compression (CSLIP). The /FLOWCONTROL
qualifier enables special handling of XON and XOFF characters.
TCPIP> SET INTERFACE SL5 /HOST=CROW /NETWORK_MASK=255.255.255.0 -
_TCPIP> /SERIAL_DEVICE=TTA3 /COMPRESS=ON /FLOWCONTROL
3–10 Configuring Serial Lines