🚀 go-pugleaf

				Hi !

> From: jpr@jpradley.jpr.com (Jean-Pierre Radley)
> Subject: Re: PPP and/or SLIP
> In article <CE15yG.4z8@qsss08.gs.com> bk@qsss01.gs.com writes:
> >I'd like to know what the diff between PPP and SLIP are.  I'm trying to connect
> >to the internet via jvncnet and they told me they use PPP, actually they
> >use MorningStar PPP.  Depending on who I talk to I get different responses about
> >what each of the protocols are.  First I'm told they are not compatible.
> >Then I hear that PPP is just a negotiator of whether to use slip or cslip (compressed

	IMHO these two are rather different protos. PPP uses different proce-
	ssing on outgoing/incoming IP datagramm. It uses so called HDLC driver.
	The next difference in user interface. PPP uses PPPD - PPP daemon,wich
	waits for connection requests from PPP , establish it by running
	UUCP style calling & login script & finally put PPP module under IP
	to allow them to send datagramms.

	But, is PPP itself responsible for proper routing after establishing
	the PPP connection - this is a question !?
	Suppose I have IP provider with IP 222.222.222.222 ,which  should be
	used as default route to outside world. How do I say to PPP to start
	connection to 222.222.222.222, when I want to make
	ftp sco.com ???
	Should I use route add default 222.222.222.222 1 before it ?
	But phisycal interface doesn't exist this time yet ?
	IMHO , as PPP stands for Point-to-Point, it doesn't allow use
	it for routing at all :(


	A asked some :) SCO tech. about PPP in TCP 1.2.0 - & was replied
	it's based on _old_ RFC , so it doesn't work good enough with modern
	PPPs.
	But as for TCP 1.2.1 - PPP should be very robust in this release ...
	Thus I was told, at least...

> >slip).  This person also tells me that MorningStar PPP runs all 3, ppp, slip and cslip.
> 

	[ some stuff skipped ]

> It took six weeks until one of the them said to me, "hey, you don't want to
> run PPP to talk to the terminal server; you want to run compressed slip."
> 
> The light went on: what they knew about was setting up the Morningstar PPP
> package to run compressed slip.
> 
> [I have never seen or touched Morningstar's package, and I have never heard
> anything but praise for Morningstar; but I'd paid a pretty penny for my SCO
> software, and right in front of me are man pages for slip, ppp, pppd...]
> 
> The other side of my problem concerned SCO ODT 3.0 (Unix 3.2v4.2). I could
> connect to the JVNC terminal server, but not ping a thing there, or connect

	By what mean ? PPP or SLIP ?

> to rest of the world in any way, until I knocked out all the ppp chains I
> had, and the other slip chain as well. When you ask SCO Unix to add a route,

	Do you mean all those chains we can see doing "netconfig" are
	removed now ? Including sl[n],ppp,& loopback ?

> I commented out the slattach line in /etc/tcp, since SCO slattach doesn't
> know how to do any dialing, and only deals with a specific tty line, so I
> didn't want such a command to be launched at boot time.
> 
> Now, after tcp starts, I launch my connection with this sequence:
> I call xcfront, a shell script which calls xc until xc finds an unused

	What is xc ? Does it come with ODT 3.0 ?
	This way, how all those STREAMS modules are bring to obtain
	a SLIP interface ?

SY
Rashid Karimov, Saratov, Russia.