Subject: Re: Are tlp[01] weak for big traffic?
To: NAKAJI Hiroyuki <nakaji@kankyo-u.ac.jp>
From: Andy Ruhl <acruhl@gmail.com>
List: port-cobalt
Date: 12/09/2006 08:39:27
On 12/8/06, NAKAJI Hiroyuki <nakaji@kankyo-u.ac.jp> wrote:
> Hello,
>
> I'm using COBALT Cache RaQ 2 with 256MB RAM running NetBSD/cobalt 4.99.4
> as a NAT router in my room. The outline of my use is like this:
>
>    -----------+----------- main stream (connected to the Internet)
>               |tlp0        OCN registered /29 network
>             +-+-+  \
>             |RaQ|  NAT
>             +-+-+  /
>               |tlp1
>      ---+-----+----------- private subnet (testing network, 192.168.1.0/24)
>       +-+-+
>       |P C|
>       +-+-+
>
> Here, when I download large files such as iso images of NetBSD or Solaris
> Express on PC, the traffice rate at tlp0 and tlp1 decreases and finnally
> it becomes zero. And the PC gets offline.
>
> My assumption is following. What is the possibility?
>
> 1. RaQ 2 is too slow to handle large traffic.
> 2. The HUB I'm using on private subnet is too weak.
> 3. tlp(4) has some problem.
> 4. other
>
> If 3 is the true reason, what shoud I do to debug or improve it? Do I have
> to show more information about my RaQ2?

I've set up my Cobalt to be a gateway/pf firewall just the other day.

I have a similar setup except:

o I'm using a Qube2
o I'm using NetBSD 3.1
o My tlp0 is connected to a wireless game adapter which connects to a
wireless router. That router then connects to my cable modem.

I'm downloading the NetBSD live CD right now, and it has been steady
around 300KB/sec for about 10 minutes. I'm downloading on a PC which
is on the tlp1 NAT private network.

I don't think there is a big difference between our machines.

Andy