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Date:      Tue, 7 Feb 1995 05:39:18 +0100 (MET)
From:      Andreas Johansson <>
Subject:   Re: Trouble sending via TCP
Message-ID:  <>
In-Reply-To: <199502070342.TAA00772@corbin.Root.COM> from "David Greenman" at Feb 6, 95 07:42:02 pm

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According to David Greenman:
> >I'm getting a similar problem with FreeBSD-current, ftp:ed
> > one week and a half ago perhaps. I'm using a 486/SX-25 with
> >4Mb ram (yeck), an Etherlink 16 card connected directly to Internet via our
> >campusnet.
>    Etherlink 16? What driver does this use?

The ie-driver.
ie0 at 0x300-0x30f irq 10 maddr 0xd0000 msize 65536 on isa
 <3C507 R1> ethernet address 00:60:8c:5a:25:19

> >OK, the problem:
> >
> >I get serious trouble when ftp:ing files FROM the FreeBSD machine, typically
> >5kb/sec against very fast machines. Receiving files to the FreeBSD machine
> >works ok -- I have recieved files at >800k/s.
>    I suspect the card/driver. If this is a 3c501, then the solution to the
> problem is clear: get a different card. It only has space for either a
> receive packet or a send packet, but not both (in other words, it's a piece
> of junk that has no chance of working well). I think the 3c505 has similar
> problems dealing with the real world.

Nope, it's a 3c507. I didn't have any problems with TCP when I used Linux.
(On the other hand Linux's NFS sucked so here we are...)
When using some older kernels I got a lot of collisions when doing all kinds
of communication, actually there were more collisions than ok packets.
This behaviour disappeared when I got -current kernel.

One more note about the system: I have another ethernet card (NE2000) that
is connected to one machine only. This one seems to work ok, but then the
connected machine is a VAX 8300 so you never know :)

ed0 at 0x280-0x29f irq 5 on isa
ed0: address 00:00:44:04:1a:b8, type NE2000 (16 bit) 

I am unable to switch cards for campusnet connection/vax connection since
the vax is communicating via 10base2, campusnet with 10baseT and the
3c507 has only got a TP-tranceiver.

> -DG


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