[svlug] slow network

Drew Bertola drew at drewb.com
Fri Oct 25 18:29:22 PDT 2002


On Fri, Oct 25, 2002 at 06:36:42AM -0400, N. Thomas wrote:
> So I have a (Covad) DSL pipe going into an OpenBSD box that serves as router
> and firewall. This box feeds into a switch, to which Debian and Redhat boxes
> are attached. If you'll permit a bit of ascii art, here is what it looks
> like:
> 
> 
>                                                 -- [RedHat]
>                                                /
>             *Internet* -- [OpenBSD] -- (switch)
>                                                \
>                                                 -- [Debian]
> 
> Okay, so I have two problems:
> 
>     Problem 1:
> 
>         I don't get anything faster than 64kbs between any machine and the
>         outside world.

What do you get between the OpenBSD box and the internet?
 
>     Problem 2:
> 
>         Between the OpenBSD box and either the RedHat or Debian box, the
>         speed is what you would expect, I can transfer a 20Mb file in about
>         10 seconds or so.
> 
>         But between the RedHat and Debian box, the transfer rate is
>         only around 100kbs. What gives?

Switch, cable, NIC???  I'd guess it's hardware.  Also, make sure all
your network settings (subnet mask, etc) are correct.  Usually,
though, you'd see no throughput if their was a network config problem.

Firewalling (iptables)  shouldn't be the issue.

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