FC1 -> FC2: very slow xDSL connection...

Andy Green fedora at warmcat.com
Thu Jun 24 13:29:07 UTC 2004


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On Thursday 24 June 2004 14:11, Andrea Giuliano wrote:
> Dear all,
>
> a few days ago I had my home ADSL connection working, and it was working
> incredibly fast!
>
> Then I decided to upgrade from FC1 to FC2. Note that I've been using FC2
> for some weeks here at work with very positive results.
>
> After the upgrade at home, the connection became so slow that it is
> almost unusable. I swear I didn't touch the network configuration, which
> is indeed very simple: I only did the upgrade, leaving everything as it
> was before.

What kind of hardware interface does the ADSL modem have?  If it is Ethernet, 
use tcpdump to look at the traffic, eg, /sbin/tcpdump host 192.168.0.1 if 
that is your ADSL router IP.  If it is USB or something else, you need to use 
tcpdump -i <interface name> instead.

You should consider turning off ECN as a test too since some routers choke on 
it.

echo 0 > /proc/sys/net/ipv4/tcp_ecn

Also, what is your network setup like generally?

- -Andy

- -- 
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