Subject: Re: verrry slow ethernet
To: Cliff Crawford <cjc26@cornell.edu>
From: Jon Lindgren <jlindgren@espus.com>
List: port-i386
Date: 12/31/1999 06:25:42
First off I might suggest MTU discovery, however, you shouldn't get that
far if MTU is the problem. Might I suggest grabbing a quick tcpdump of
the failing session (i.e. the ftp to ftp.gnu.org)? That might
help. Although it might also be a hardware problem, and I can't help you
on that one, sorry.
-Jon Lindgren
"Xyzzy! You're a duck!"
jlindgren@espus.com, yubyub@yubyub.net
Livin' it up in Brooklyn for Y2K...
On Thu, 30 Dec 1999, Cliff Crawford wrote:
> Hello,
> I have two ethernet cards, an ISA NE2000+ and a PCI RealTek 8029 (NE2000
> compatible). I'm running 1.4.1, and am connected via RoadRunner (i.e.
> configured by dhcp). I'm getting intermittent problems with either
> one--basically some web and ftp sites will be extremely slow (like, 100
> bytes a second) while others will load just fine. For example, from
> ftp.eecs.umich.edu I can get a transfer rate of about 80k/s, while
> ftp.gnu.org frequently stalls out while downloading anything (if I can
> get that far--it takes about ten minutes just to display the motd). Also,
> the POP server and news server which I usually use are on the same subnet,
> but fetchmail takes something like five minutes to download three
> messages, then times out, while I can read newsgroups just fine. I know
> this is a problem with my NetBSD setup and not with RoadRunner because
> when I reboot the machine into FreeBSD everything works just fine.
>
> I included the relevant output from dmesg and ifconfig below. Does
> anyone have any idea what's going wrong?
>
> ne2 at pci0 dev 11 function 0: RealTek 8029 Ethernet
> ne2: 10base2, 10baseT, 10baseT-FDX, auto, default auto
> ne2: Ethernet address 52:54:00:ed:62:f5
> ne2: interrupting at irq 11
>
> ne1 at isa0 port 0x300-0x31f irq 10
> ne1: NE2000 Ethernet
> ne1: Ethernet address 00:80:29:ed:ec:30
>
> ne2: flags=8822<BROADCAST,NOTRAILERS,SIMPLEX,MULTICAST> mtu 1500
> address: 52:54:00:ed:62:f5
> media: Ethernet autoselect (10base2)
> ne1: flags=8863<UP,BROADCAST,NOTRAILERS,RUNNING,SIMPLEX,MULTICAST> mtu 1500
> address: 00:80:29:ed:ec:30
> media: Ethernet manual
> inet 24.24.11.7 netmask 0xffffff00 broadcast 24.24.11.255
>
>
> --
> cliff crawford http://www.people.cornell.edu/pages/cjc26/
> -><- "You and your stupid orthography" -- Mark
>