Serial Line IP (SLIP) protocol
The Serial Line IP (SLIP) protocol is a
very simple protocol which allows two machines to
communicate via TCP/IP over a serial line. This protocol
simply defines the octets necessary for framing and
escaping octets in an IP packet. At the sending
end, all octets in the IP packet that should be
preceded by an ``escape'' character, will be
``escaped'' before sending this packet; this packet
transmission will end with a FRAME_END
octet. At the receiving end, the octets will be gathered
and any ``escaped'' octets will be transposed (as
necessary), until a FRAME_END is received
for this packet; then the resulting packet will be passed
up to IP.
The following ioctl calls can be used to adjust
the behavior of the SLIP module.
The following header file includes the definitions for
Please note that the S_MTU
ioctl is the only ioctl call which
needs a parameter value, an integer.
Turn on TCP/IP header compression.
Turn off TCP/IP header compression.
Turn on automatic detection of TCP/IP header compression
(start using compression when peer system does).
Turn off automatic detection of TCP/IP header compression.
Do not allow ICMP packets out on the wire.
Allow ICMP packets out on the wire.
Set the ``maximum transmission unit'' (MTU)
value for this interface. This request requires an integer
as a parameter value to indicate the new MTU size.
RFC 1055, RFC 1144
© 2004 The SCO Group, Inc. All rights reserved.
UnixWare 7 Release 7.1.4 - 25 April 2004