I4BISPPP(4) BSD Kernel Interfaces Manual I4BISPPP(4)NAMEi4bisppp — isdn4bsd synchronous PPP over ISDN B-channel network driver
SYNOPSIS
pseudo-device "i4bisppp" [count]
DESCRIPTION
The i4bisppp driver interfaces the IP subsystem of the operating system
with the isdn4bsd package so that a transport of IP packets over an ISDN
link is possible.
The driver is just a glue layer between Serge Vakulenko's sppp backend
and the ISDN4BSD package.
Beginning with i4b version 0.95 (and only for FreeBSD and DragonFly), the
sppp subsystem was integrated into the i4bisppp driver to support more
i4b/ISDN specific options. As a consequence it is no longer necessary to
add a "options sppp" to your kernel config(8) file. For configuration of
the i4bsppp driver, either the spppcontrol(8) utility is used or it is
configured via isdnd(8) and its associated isdnd.rc(5) file.
In case an IP packet for a remote side arrives in the driver and no con‐
nection is established yet, the driver communicates with the isdnd(8)
daemon to establish a connection.
The driver has support for interfacing to the bpf(4) subsystem for using
tcpdump(1) with the isp interfaces.
The spppcontrol(8) utility is used to configure all aspects of PPP
required to connect to a remote site.
LINK0 and LINK1
The link0 and link1 flags given as parameters to ifconfig(8) have the
following meaning for the isp devices:
link0 wait passively for connection
link1 auto-dial on output
The link0 and link1 flags are set to off by default.
See sppp(4) for a more detailed discussion of the flags,
SEE ALSOtcpdump(1), bpf(4), sppp(4), isdnd.rc(5), isdnd(8), spppcontrol(8)AUTHORS
The i4bisppp device driver was written by Joerg Wunsch
⟨joerg@FreeBSD.org⟩ and then added to ISDN4BSD by Gary Jennejohn
⟨gj@FreeBSD.org⟩.
This manpage was written by Hellmuth Michaelis ⟨hm@FreeBSD.org⟩.
BSD August 31, 2000 BSD
