This file describes the installation process for ppp-2.3 on systems
running Solaris 2.  The Solaris 2 and SVR4 ports share a lot of code
but are not identical.  The STREAMS kernel modules and driver for
Solaris 2 are in the svr4 directory (and use some code from the
modules directory).

NOTE: Although the kernel driver and modules have been designed to
operate correctly on SMP systems, they have not been extensively
tested on SMP machines.  Some users of SMP Solaris x86 systems have
reported system problems apparently linked to the use of previous
versions of this software.  I believe these problems have been fixed.


Installation.
*************

1. Run the configure script and make the user-level programs and the
kernel modules.

	./configure
	make

If you wish to use gcc (or another compiler) instead of Sun's cc, edit
the svr4/Makedefs file and uncomment the definition of CC.  You can
also change the options passed to the C compiler by editing the COPTS
definition.

2. Install the programs and kernel modules: as root, do

	make install

This installs pppd, chat and pppstats in /usr/local/bin and the kernel
modules in /kernel/drv and /kernel/strmod, and creates the /etc/ppp
directory and populates it with default configuration files.  You can
change the installation directories by editing svr4/Makedefs.

If your system normally has only one network interface, the default
Solaris 2 system startup scripts will disable IP forwarding in the IP
kernel module.  This will prevent the remote machine from using the
local machine as a gateway to access other hosts.  The solution is to
create an /etc/ppp/ip-up script containing something like this:

	#!/bin/sh
	/usr/sbin/ndd -set /dev/ip ip_forwarding 1

See the man page for ip(7p) for details.

64-bit Support.
***************

This version has been tested under Solaris 7 (and Solaris 8 Beta) in both 
32- and 64-bits environments (Ultra class machines). Installing the package
by executing "make install" will result in additional files residing in
/kernel/drv/sparcv9 and /kernel/strmod/sparcv9 subdirectories.

64-bit modules and driver have been compiled and tested using Sun's cc.

Synchronous Serial Support.
***************************

This version has working but limited support for the on-board synchronous HDLC 
interfaces. It has been tested with the /dev/se_hdlc and /dev/zsh drivers.
Synchronous mode was tested with a Cisco router.

There ppp daemon does not directly support controlling the serial interface.
It relies on the /usr/sbin/syncinit command to initialize HDLC mode and 
clocking.

Some bugs remain: large sized frames are not sent/received properly, and
may be related to the IP mtu. This
may be due to bugs in pppd itself, bugs in Solaris or the serial drivers. 
The /dev/zsh driver seems more larger and can send/receive larger frames
than the /dev/se_hdlc driver. There is a confirmed bug with NRZ/NRZI mode
in the /dev/se_hdlc driver, and Solaris patch 104596-11 is needed to correct
it. (However this patch seems to introduce other serial problems. If you
don't apply the patch, the workaround is to change the nrzi mode to yes or
no, whichever works)

How to start pppd with synchronous support:

#!/bin/sh

local=1.1.1.1   # your ip address here
baud=38400	# needed, but ignored by serial driver

# Change to the correct serial driver/port
#dev=/dev/zsh0
dev=/dev/se_hdlc0
 
# Change the driver, nrzi mode, speed and clocking to match your setup
# This configuration is for external clocking from the DCE
connect="syncinit se_hdlc0 nrzi=no speed=64000 txc=rxc rxc=rxc"
 
/usr/sbin/pppd $dev sync $baud novj noauth $local: connect "$connect"


Sample Cisco router config excerpt:

!
! Cisco router setup as DCE with RS-232 DCE cable
! 
!         
interface Serial0
 ip address 1.1.1.2 255.255.255.0
 encapsulation ppp
 clockrate 64000
 no nrzi-encoding
 no shutdown
!         

