From owner-freebsd-questions Sun Nov 16 11:04:59 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id LAA07311 for questions-outgoing; Sun, 16 Nov 1997 11:04:59 -0800 (PST) (envelope-from owner-freebsd-questions) Received: from woman.kitel.co.kr (woman.kitel.co.kr [210.116.210.106]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id LAA07305 for ; Sun, 16 Nov 1997 11:04:54 -0800 (PST) (envelope-from swjeong@woman.kitel.co.kr) Received: from woman.kitel.co.kr (localhost.kitel.co.kr [127.0.0.1]) by woman.kitel.co.kr (8.8.7/8.8.7) with SMTP id DAA00599; Mon, 17 Nov 1997 03:24:17 +0900 (KST) (envelope-from swjeong@woman.kitel.co.kr) Message-ID: <346F3A50.2781E494@woman.kitel.co.kr> Date: Mon, 17 Nov 1997 03:24:16 +0900 From: Jeong Seong Won Organization: kitel X-Mailer: Mozilla 3.01 (X11; I; FreeBSD 2.2.5-RELEASE i386) MIME-Version: 1.0 To: dg@root.com CC: freebsd-questions@FreeBSD.ORG Subject: Re: Network connection often stops. Why ? References: <199711161752.JAA18425@implode.root.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-questions@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk > > 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) Thank you. ---- test ftp session ftp> bin 200 Type set to I. ftp> hash Hash mark printing off. ftp> put menu1.putter.tar mpt local: menu1.putter.tar remote: mpt 200 PORT command successful. 150 Opening BINARY mode data connection for 'mpt'. 226 Transfer complete. 141045760 bytes sent in 64.65 seconds (2.08 Meg/s) ftp> ---- part of 'netstat -i 1' during file transfter input (Total) output packets errs bytes packets errs bytes colls 702 0 3894433 1191 0 1308856 885 1944 0 52236 1735 0 1756141 1817 1797 0 64946 1400 0 2162948 1633 762 0 92377 1420 0 2172839 1113 799 0 71457 1570 0 2312271 1234 847 0 56098 1584 0 1963419 1185 883 0 47396 1682 0 1522724 1213 693 0 54944 1295 0 1512537 988 620 0 102042 1036 0 2395828 786 791 0 68771 1394 0 2177896 1087 920 0 59419 1655 0 1867955 1204 858 0 87879 1598 0 2563406 1329 844 0 627342 1462 0 2275711 1070 1104 0 1072901 2003 0 2303189 1398 717 0 190867 1206 0 5082679 787 688 0 100601 1157 0 2272163 754 1794 0 92633 3531 0 2010000 2814 880 0 81479 1568 0 2635020 1144 928 0 78486 1664 0 2316235 1234 1045 0 66754 1896 0 1816872 1408 836 0 73043 1488 0 2273104 1058