home *** CD-ROM | disk | FTP | other *** search
- Xref: sparky comp.unix.sys5.r4:1155 comp.unix.questions:15271 biz.comp.telebit.netblazer:11 comp.protocols.tcp-ip:5839
- Newsgroups: comp.unix.sys5.r4,comp.unix.questions,biz.comp.telebit.netblazer,comp.protocols.tcp-ip
- Path: sparky!uunet!nntp.telebit.com!mlewis
- From: mlewis@telebit.com (Mark S. Lewis)
- Subject: Re: Netblazer
- In-Reply-To: larry@news.rn.com's message of Thu, 7 Jan 1993 17:00:30 GMT
- Message-ID: <MLEWIS.93Jan7101356@yoyo.telebit.com>
- Sender: news@telebit.com
- Nntp-Posting-Host: yoyo
- Reply-To: mlewis@telebit.com
- Organization: Telebit Corporation; Sunnyvale, CA, USA
- References: <C0Htwu.8A3@news.rn.com>
- Date: Thu, 7 Jan 1993 18:13:56 GMT
- Lines: 43
-
-
- > I currently attach via SLIP over a leased line using v.32bis/v.42bis
- > modems from a Dell machine (on my end) into a smartport on a Telebit Netblazer.
-
- > Would I see any significant increase in throughput using this same
- > physical connection (v.32bis/v.42bis) but replacing the Dell SLIP
- > with a Netblazer on my end -- and connecting my machines via ethernet
- > to the Netblazer?
-
- > I assume this would give me the ability to support PPP/CSLIP since
- > my connection would be Netblazer-Netblazer -- what would PPP buy me
- > over traditional SLIP (our feed is basically for smtp/nntp traffic,
- > with ftps,telnets,rlogins used infrequently)..
-
-
- > --
- > Larry Snyder internet: larry@gator.rn.com
- > keeper of the Gator uucp: uunet!gator!larry
-
- No I don't think you would get a significant performance increase by
- putting a NetBlazer at both ends. You are using relatively slow
- serial lines limited by V.32bis modulation with whatever compression
- you get with V.42bis.
-
- You would get significant performance increase for telnet sessions
- using TCP header compression. This won't help UDP traffic of course.
- This compression can be used with SLIP (CSLIP) or PPP. Many PPP
- implementations include header compression.
-
- The main benefits of PPP are dynamic configurability and the ability
- to run multiple protocols. PPP negotiates things like header
- compression, MRU/MTU size while trying to bring the link up. With
- SLIP all this must be statically configured ahead of time.
-
- PPP has specifications for protocols other than IP. People run IPX,
- AppleTalk, XNS, Decnet, OSI, and bridging over PPP links. SLIP is
- only useful for IP.
-
- ... Mark
-
- =========----------- Mark S. Lewis -----------==========
- inet: mlewis@telebit.com Telebit Corp. Telebit (408) 745-3232
- uucp: uunet!telebit!mlewis Fax (408) 745-3810
-