Date: Tue, 31 Jul 2001 12:01:49 +0200 From: Christoph Sold <so@server.i-clue.de> To: root <pureevilis@home.com> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Nic Problems Message-ID: <3B66820D.D581DB8@i-clue.de> References: <3B65B28C.CD8BE112@home.com>
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You probably have your NICs detecting a switch. The correct configuration for any HUB-connected NIC is half-duplex. Full duplex would cause the bandwidth drop you have seen. Read the man page for your NICs, then configure them for half-dx operation. HTH -Christoph Sold root wrote: > > I have attached the following description in plain text. > > Please send help or suggestions to: > pureevilis@home.com > > ------------------------------------------------------------------------ > I am having bandwidth issues with my freeBSD > Operating system. > I am attempting to setup 3 computers through > a hub. When I plug my @home cable modem > directly into the FreeBSD computer I get > about 300kb download, but if I plug it into > the hub (Even with NO other computers plugged > into the huh) it goes down to about < 10kb) > I have done the following to attempt to > troubleshoot the problem: > > 1: I have tried every port on hub w/ no other > computers hooked in. > > 2: I have tried > 3 CAT 5 wires > > 3: I have tried 4 nics (2 SMC's 1 Realtek and > 1 Lynksys) > > 4: I have tried 2 hubs (1 is a netgear, > I do not know the others brand name, > but it does work, as I tested it on > other computers in room) > > 5: Reinstalling Operating system > 3 times. > > 6: Installed other operating systems (Linux > [Linux did not experience this problem]) > > I currently have 3 SMC 10/100 PCI ethernet > cards in the machine. > ________________________________________ > bash-2.04# dmesg | grep address > rl0: Ethernet address: 00:e0:29:98:17:dd > rl1: Ethernet address: 00:04:e2:0b:74:97 > rl2: Ethernet address: 00:04:e2:0b:74:7f > bash-2.04# > ---------------------------------------- > > I have reinstalled the operating system > using the GENERIC kernel. > ________________________________________ > bash-2.04# uname -a > FreeBSD xxxxxxx.xxxxxx.tx.home.com > 4.2-RELEASE FreeBSD 4.2-RELEASE #0: > Mon Nov 20 13:02:55 GMT 2000 > jkh@bento.FreeBSD.org: > /usr/src/sys/compile/GENERIC > i386 > bash-2.04# > --------------------------------------- > > My hub setup is the following: > _______________________________________ > @home cable modem plugged into UPLINK > on hub. > FreeBSD plugged into any of remaining > ports. > For testing, I sometimes plug one-two > other computers into hub (There > download speed continues to remain > at approx 300kb while plugged into > hub regardless of FreeBSD's presense). > --------------------------------------- > > Any help or suggestions regarding this issue > would be greatly appreciated. > I have been a Linux user for about 2 years > and have recently fallen in love with FreeBSD. > I would really hate to have to go back > because of a bandwidth issue. > > Also, I dont know if it means anything, > but I do get an ICMP Bandwidth message > when being nmaped. > _________________________________________ > bash-2.04# nmap -P0 127.0.0.1 > > Starting nmap V. 2.53 by fyodor@insecure.org > ( www.insecure.org/nmap/ ) > Jul 30 14:02:52 deicide /kernel: > icmp-response bandwidth limit 364/200 pps > Jul 30 14:02:53 deicide /kernel: icmp-response > bandwidth limit 384/200 pps > ^C > caught SIGINT signal, cleaning up > bash-2.04# > ------------------------------------------ > > Did not think it was relevant though as > my bandwidth is fine plugged directly into > computer from modem. > > Anyways, Please help. > Thank you, > Jason. > > EMAIL: pureevilis@home.com -- Freundliche Grüße aus Waiblingen Christoph Sold -- Systemadministrator, i-clue GmbH, Endersbacher Str. 57, 71334 Waiblingen Fon: (0 71 51) 9 59 01-12, Fax: (0 71 51) 9 59 01-55, Mail: so@i-clue.de To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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