i4bisppp(4)
NAME
- i4bisppp - isdn4bsd synchronous PPP over ISDN B-channel net
- work driver
SYNOPSIS
device "i4bisppp" [count] device sppp
DESCRIPTION
- The i4bisppp driver interfaces the IP subsystem of the oper
- ating 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 the sppp(4) backend
- and the
ISDN4BSD package and needs the sppp(4) driver configured in - to the kernel.
- The network interfaces provided by this driver are named
- isp<n>, where
<n> is a number between 0 and count-1 from the kernel config - line.
- For configuration of the i4bsppp driver, either the spppcon
- trol(8) utility is used or the driver can be 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 connection 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) subsys
- tem for using
tcpdump(1) with the isp interfaces.
LINK0 and LINK1
- The link0 and link1 flags given as parameters to ifconfig(8)
- have the
following meaning for the isp<n> 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 ALSO
- tcpdump(1), bpf(4), sppp(4), isdnd.rc(5), isdnd(8), spppcon
- trol(8)
AUTHORS
- The i4bisppp device driver was written by Joerg Wunsch
<joerg@FreeBSD.org> and then added to ISDN4BSD by Gary Jen - nejohn
<gj@FreeBSD.org>. - This manpage was written by Hellmuth Michaelis <hm@FreeB
- SD.org>.
- BSD July 28, 2002