Date: Fri, 02 Jun 1995 11:57:27 -0700 From: "Justin T. Gibbs" <gibbs@freefall.cdrom.com> To: Carlos Antonio Ruggiero <TOTO@ifqsc.sc.usp.br> Cc: freebsd-hackers@freebsd.org Subject: Re: Slip hangs my machine :-( Message-ID: <199506021857.LAA26758@freefall.cdrom.com> In-Reply-To: Your message of "Fri, 02 Jun 95 15:46:00 %2B0700." <EB77704EB17F001AA6@IFQSC.SC.USP.BR>
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>Hi everybody, > >I'm having trouble with my slip connection. I waited for 2.0.5 >to see if the problem went away but it is still there... > >I have a leased line to my university ( a cisco router) and a >US Robotics V.FC 28.800 on each side of the connection. The cisco >router is rather old and only supports slip (no VJ compression) > >I've been using this setup since september 1993 (the modem was 14400) >with no problems whatsoever. However, since one of the latest >snaps (the march one I think) the slip connection hangs >the machine after 1 or 2 megabytes of transfers. When I say >"hangs" I mean it! No activity, no ALT-FN, nada. Only the big >red button... > >I'm sure it's not a hardware problem because DOS, OS/2 (aaarrrgh) >and linux seem to be very happy with it. I've been transferring >hundreds of megabytes using linux with no problems. > >I believe it's got to do with some configuration thing but I am >really not sure. What I do is: >slattach -s 38400 -h /dev/cuaa1 >ifconfig sl0 143.107.228.51 143.107.228.4 >route add default 143.107.228.4 > >And that is all. It works for a while and ... freezes... Do >I have to set cuaa1 to some state? Any other parameter to slattach? > >Please help!! It is funny that I have to use linux when FreeBSD >was so nice in this respect when linux was quite shaky, two years >ago... > >Ahh, FreeBSD 2.0 Release seems to be fine but I need the >2940 device driver to use my 2.1G disk and my Exabyte tape :-) > >Thanks > >Carlos Ruggiero (toto@ifq.sc.usp.br) In /etc/sysconfig, set: # # Some broken implementations can't handle the RFC 1323 and RFC 1644 # TCP options. If TCP connections randomly hang, try disabling this, # and bug the vendor of the losing equipment. # tcp_extensions=NO -- Justin T. Gibbs ============================================== TCS Instructional Group - Programmer/Analyst 1 Cory | Po | Danube | Volga | Parker | Torus ==============================================
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