*BSD News Article 54147


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From: jcnc@maxwell.eppet.pt (Joao Neves Cabral)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Optimize for router processing
Date: 9 Nov 1995 13:10:46 +0100
Organization: EPPET
Lines: 22
Distribution: inet
Message-ID: <47sr46$r3r@maxwell.eppet.pt>
NNTP-Posting-Host: maxwell.eppet.pt
X-Newsreader: TIN [version 1.2 PL2]

Hi all,

We currently have a FreeBSD box (486dx33 with 8mb of RAM) working as
an IP router to the Internet. The connection is established through 
ppp with the dial-on-demmand capability. The machine also serves two
incomming dialup lines, supporting SLIP and PPP connections.

This box routes IP packets between two ethernet LAN's, between the
network hosts and the Internet, and between the PPP/SLIP hosts and 
the all the computers.

Sometimes, on heavy traffic, I get the following message:

  No buffer space available

I would like to build a new kernel, with the TCP/IP tables and
buffers optimized for this kind of processing. Is there any way for this
to be done ? What should I change in the kernel files ?

Thanks in advance,
Joao Cabral.