Date: Sun, 30 Nov 1997 16:01:17 +0900 From: Jeong Seong Won <swjeong@woman.kitel.co.kr> To: dg@root.com Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Network connection often stops. Why ? Message-ID: <34810F3D.41C67EA6@woman.kitel.co.kr> References: <199711161918.LAA19771@implode.root.com>
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> > About twenty of 686 FreeBSD 2.2.1 Machine is connected > > via FastEthernet.(Intel EtherExpress) > > Hub is SMC tigerstack.(not a switching) > > Problem occurs in the same way when I used SMC 9332BDT. > > Network options MAXMEM=262144 > > Concurrent User is aboue 230 per machine. > > Problem is that suddenly telnet session stop. > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > When this happens, all key stokes is not effective, and at last > > conection is closed. > > vnode, file table, mbuf, somaxconn is sufficient. > >It seldom crashes (per two month or so). > >Normally, when telnet session stops and is closed, the server > >is normal. And stop at one telnet session doesn't have effect on > >the other telnet session. > > This is very strange. > Have you noticed the problem with any other methods > of logging in - such as rlogin or perhaps ssh? > Have you had any problems with any other TCP connections > (ftp, for example)? > > >1. rlogin : It stops the same as telnet. > > > >2. ftp : Between two fxp0. It seems to be ok. > > But I think collision is too much. > > > >*. : This problem much more often occurs when I used telnet session > > across dedicated frame-relay line. > > (my company has another office 200km apart from here. > > and two offices are linked via 256k frame-relay by two > > cisco2501) > > Hmmm. This is sounding more like a non-ethernet network problem, > perhaps bit-sensitive. Are you positive that the problem occurs > both between two local machines as well as across > your frame-relay link? Yes, you were right. The problem was in the router. When I changed router O/S, the problem didn't occur. Thank you !!
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