User guide

Configure Serial Port Settings
Chapter 1 Command Line Configuration Tasks 17
Configure Serial Port Settings
Configuring serial port settings involves setting the following options for a
port:
• Point-to-Point (PPP) connections
• Industrial automation (IA)
• Modem emulation
• TCP socket communication
• UDP Multicast communication
• Autoconnection
• Port sharing
Configure PPP Connections
Configuring Point-to-Point Protocol (PPP) connections includes:
• Configuring inbound PPP connections
• Configuring outbound PPP connections
• Using filters on the PPP connections, as needed
Configure Inbound PPP Connections
To configure simple inbound PPP connections from the command line,
follow the steps below. Regarding inbound PPP connections:
• For information on fine-tuning PPP connections, see "set user" on page
230.
• CHAP authentication works between two Digi devices. CHAP will be
negotiated to PAP for all other connections
1. To configure the port for a modem, enter:
#> set ports range=range dev=device
where range is the port or ports and device is “min” for inbound-only
modem connections, or “mio” for bidirectional modem connections.
For example:
#> set ports range=3 device=min
2. To configure flow control for the ports, enter:
#> set flow range=range flow control scheme
where range is the port or ports and flow control scheme is the flow
control required for this connection.
There are several options for establishing a flow-control scheme on
“set flow.” Typically, for modem connections, RTS and CTS are on. The
following example shows a typical flow-control scheme for a modem:
#> set flow range=3 ixon=off ixoff=off rts=on cts=on