*BSD News Article 34782


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From: ches02@ccsun.strath.ac.uk ( "d.sinclair")
Newsgroups: comp.dcom.lans.ethernet,comp.os.386bsd.misc
Subject: Unix PC as dedicated router?
Date: 22 Aug 1994 15:15:32 GMT
Organization: University of Strathclyde Computer Centre
Lines: 46
Message-ID: <33afek$8s8@rockall.cc.strath.ac.uk>
Reply-To: sinclair@dis.strath.ac.uk
NNTP-Posting-Host: rosemount.cc.strath.ac.uk
Keywords: bsd router fast

I'm in the market for a router, currently a simple ethernet-ethernet
thing, but in the longer term perhaps ethernet-fddi or atm, or whatever.

Doing princings on various options leads me to a very nice but very
expensive box by a well known router company.

Then last week, I had a smart idea.  I could buy a high-spec PC, perhaps
with a PCI bus, or similar, put two ethernet cards in it, and run a free
version of Unix on it, such as NetBSD, or FreeBSD - this would at least
be half the price of a dedicated router.  When the time comes, I can buy
an FDDI board for a PC, again at a cheaper price.

Can anyone comment on what I would be losing by taking this approach?

Would the system be able to run as fast as a dedicated router?

 In particular:

   Is NetBSD's or FreeBSD's IP implementation good enough to drive
   the ethernet faster than around 40% utilisation that my Sun-based
   router does at present?

   Will a PCI, VESA, or EISA bus be fast enough to match the software?

Can I implement packet filtering to provide security?

Does either NetBSD or FreeBSD support the sort of hardware I'm talking
about?  Will it in a year's time?  How about a commercial system?

Any specific recommendations?

Is there anything I haven't realised?

Of course, I know that the PC solution cannot match all the specifications
of a good custom router, but at half the price, or less, it's an attractive
proposition.

E-mail replies preferred, to avoid the usual flaming in the bsd group.
I'll post a summary of any interesting results.

Thanks for all comments you can give,