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Date:      Tue, 11 Jun 1996 19:19:32 +0200 (MET DST)
From:      "Christoph P. Kukulies" <kuku@gilberto.physik.rwth-aachen.de>
To:        wollman@lcs.mit.edu (Garrett Wollman)
Cc:        kuku@gilberto.physik.rwth-aachen.de, freebsd-questions@freefall.FreeBSD.org
Subject:   Re: FreeBSD as a 100Mbit router
Message-ID:  <199606111719.TAA01947@gilberto.physik.rwth-aachen.de>
In-Reply-To: <9606111659.AA25077@halloran-eldar.lcs.mit.edu>

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> <<On Mon, 10 Jun 1996 19:12:19 +0200, "Christoph P. Kukulies" <kuku@gilberto.physik.rwth-aachen.de> said:
> 
> > Anyone having experience with 100Mbit technology?
> > I'm thinking of building a router from our campus FDDI ring to
> > 100MBit Fast Ethernet.
> > Using a P5 and PCI bus what hardware could be recommended?
> 
> Something based on a Triton or Triton II chipset (or whatever Intel
> has decided to call them this week).  The P6 chipsets are not as good
> as yet.  For the Ethernet, I would recommend any board supported by
> the `de' driver; we use DEC DE500-XAs because they were the only ones
> available when we bought them.  For FDDI, there is only one choice;
> the only driver we have is for the the DEC DEFPA card.
> 
> > What router throughput could be expected?
> 
> You should be able to forward large packets at line rate.  Smaller
> packets are significantly more expensive.
> 
> > BTW, how reliable is 100BaseT technology? 
> 
> As reliably as regular Ethernet, provided you stay within the design
> limits.

Thanks for the information and thanks to others who answered to my 
question.

One last question: Specs/Design limits, cards etc. - is there a web site
carrying info on these issues?


> 
> > What does the physical layer look like? Twisted pair phone line
> > (2 wire, shielded)? what type are the connectors and wall outlets?
> 
> It's category 5 UNshielded twisted-pair centered in an eight-position
> modular connector (RJ-45? you may have a different local standard
> number).
> 
> -GAWollman
> 
> --
> Garrett A. Wollman   | Shashish is simple, it's discreet, it's brief. ... 
> wollman@lcs.mit.edu  | Shashish is the bonding of hearts in spite of distance.
> Opinions not those of| It is a bond more powerful than absence.  We like people
> MIT, LCS, ANA, or NSA| who like Shashish.  - Claude McKenzie + Florent Vollant
> 

--Chris Christoph P. U. Kukulies kuku@gil.physik.rwth-aachen.de



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