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- Newsgroups: comp.unix.questions
- Path: sparky!uunet!psinntp!hyphenw!dwight
- From: dwight@hyphen.com (Dwight Ernest)
- Subject: Re: What is a SLIP connection?
- Message-ID: <1993Jan2.154437.17370@hyphen.com>
- Organization: Hyphen, Inc., Wilmington, MA 01887 USA / +1 508 988-0880
- References: <1i2v69INNfig@uniwa.uwa.edu.au>
- Date: Sat, 2 Jan 1993 15:44:37 GMT
- Lines: 91
-
- smrttadm@uniwa.uwa.edu.au (Jeffrey Smartt) writes:
-
- >can someone please tell me what a SLIP connection is!
-
- A SLIP (serial line Internet protocol) connection is a TCP/IP connection
- implemented through a serial circuit like a modem or a direct-connect
- line. TCP/IP connections can also be implemented through other media,
- e.g. Ethernet, FDDI, token ring, whatever. SLIP connections are often
- used through modem circuits.
-
-
- [The following is a canned response to questions I encounter concerning
- SLIP and PPP.]
-
- I would recommend using PPP (Point-to-Point Protocol) instead of SLIP
- if you have a choice.
- - It's not limited to TCP/IP;
- - It has its own link-layer checksum;
- - It's better supported by most router manufacturers.
-
- Whatever you choose to do, whether it's SLIP or PPP, make sure that the
- implementation you use provides for Van Jacobsen (VJ) header
- compression. There are versions of both SLIP and PPP that support
- this. The version of SLIP that supports it is often referred to as
- CSLIP. With it, interactive TCP/IP usage over slow (<56 kB/s) circuits
- will be less slow to use.
-
- I have a document that I will share with you upon request (on the
- condition that you keep its credit and copyright notices intact) that
- describes how to install a version of SLIP >without< VJ header
- compression into a Sun running 4.1.1 or 4.1.2 SunOS. You can get that
- document by asking me for 'slip.doc'. I can also send you, upon
- request, the version of SLIP to which that document refers, but it
- lacks VJ compression.
-
- For a version of PPP with VJ compression that's free for use, look for
- the 'free Sun PPP implementation from karl@MorningStar.Com'. The
- current patchlevel for that version is 6. I can send this to you as a
- last resort, but you should check your local archive server for it
- first before asking me.
-
- Here is a file from ftp.uu.net which explains more about where to find
- SLIP and PPP implementations:
-
- ----- Begin included message:
- From: bob@MorningStar.Com (Bob Sutterfield)
- Subject: Re: dialup IP (was Re: Telebit and V.32bis)
- In-Reply-To: kozowski@ohsu.edu's message of 10 Jun 91 16:51:54 GMT
- Organization: Morning Star Technologies
- Date: Tue, 11 Jun 91 17:43:21 GMT
-
- In article <1991Jun10.165154.28133@ohsu.edu> kozowski@ohsu.edu (Eric Kozowski) writes:
- In article <BOB.91Jun8234920@remora.MorningStar.Com> bob@MorningStar.Com (Bob Sutterfield) writes:
- ...There are several implementations of each [PPP and SLIP]
- available for free...
-
- Where can I find these via anonymous ftp????
-
- ftp.ee.lbl.gov:cslipbeta.tar.Z
- header-compressed SLIP for Suns and perhaps other stuff
-
- thumper.bellcore.com:pub/ka9q/*
- KA9Q for PCs and other stuff
-
- icarus.riacs.edu:pub/slip/*
- various SLIP stuff for Suns and others
-
- tut.cis.ohio-state.edu:pub/ppp/ppp-sparc4.1.tar.Z
- STREAMS-based header-compressed PPP for SunOS 4
- [Dwight's note: this is the PPP that I'm using, with VJ compression.]
-
- uunet.uu.net:networking/dialupip2.0.tar.Z and .../dialupip2.0.patch.1.Z
- on-demand SLIP for Sun-3s under SunOS 3
-
- uunet.uu.net:networking/*
- miscellaneous SLIP and PPP implementations for various hardware
- and other useful stuff
-
- The current NCSA Telnet family may support SLIP and/or PPP, but I'm
- not familiar with them. That's all I can think of for now - surely
- someone has more that I've forgotten.
-
- Also, several companies sell products incorporating SLIP and PPP.
-
- -----End included message
-
- Good luck,
- --
- --Dwight A. Ernest R&D Manager (USA) I speak only for myself.
- Hyphen, Inc./181 Ballardvale St./Wilmington, MA 01887/+1 508 988 0880 x125
- dwight@hyphen.com
-