[SOLVED] Network problem: slow for wired but fast for wifi

leosgb · Last edited by leosgb on Thu Apr 12, 2007 1:48 am; edited 1 time in total

I am having this problem with my home network. I have a desktop wired to my router and I have a laptop that connects to the router thru wifi.

My intranet is really fast. All transfers in the network happen at speeds close to the 54 Mbps maximum data rate for my router. My laptop has a very quick connection to the internet. BUT all outbound connections from my desktop are incredibly slow.

What kind of information is needed to try to figure out what happens here?

I just tried to ping similar addresses from both desktop and laptop and I get the same response times. This is funny because the pages seem so much heavier from my desktop (take much longer to load).

Does anyone have a similar problem? I would appreciate any help. I am using a 3COM card:

Ethernet controller: 3Com Corporation 3c905B 100BaseTX [Cyclone] (rev 34)

jmbsvicetto · Posted: Tue Apr 10, 2007 4:37 am Post subject:

Hi.

If you're using Gentoo on both, compare the network configuration in both systems. If I understood you, the desktop works well on your LAN and is only slow when accessing the Internet, is that right? If so, look at your DNS configuration.
You can test if you have a name resolution problem, by connecting using ip addresses instead of dns names.
_________________
Jorge.

Your twisted, but hopefully friendly daemon.
AMD64 / x86 / Sparc Gentoo
Help answer || emwrap.sh

footloose123 · n00b Joined: 10 Apr 2007 Posts: 2

If you can ping a url from a console and get immediate DNS resolution but using a web browser makes you wait 10 seconds then you may be having a problem with ipV6 trying to resolve first. Check your kernel config if this is the case and remove ipV6.

leosgb · Posted: Wed Apr 11, 2007 1:59 am Post subject:

Hi,

Thanks for the suggestions. First, my desktop is gentoo and my laptop is windows xp.

So this is what I tried following the suggestions:

1) ping www.google.com and www.yahoo.com from both computers. I get the same delay so I suppose DNS and packet routing is taking the same amount of time.

2) checked my current kernel .config and I do have ipv6 enabled.

So, should I try to recompile my kernel w/o ipv6 support? Is it safe? After the ping test I started to believe that my problem lies in my firefox and not in my network. Can this be possible?

Thanks for all suggestions!

footloose123 · n00b Joined: 10 Apr 2007 Posts: 2

I had the exact problem you are describing and the solution is to remove ipV6 from the kernel and recompile. IpV6 isn't nessessary for normal internet use,

jmbsvicetto · Posted: Wed Apr 11, 2007 7:08 pm Post subject:

Well, a simpler solution is to build mozilla-firefox with USE="-ipv6". You should add it to /etc/portage/package.use.
_________________
Jorge.

Your twisted, but hopefully friendly daemon.
AMD64 / x86 / Sparc Gentoo
Help answer || emwrap.sh

leosgb · Posted: Thu Apr 12, 2007 1:48 am Post subject:

Oooops if I had only seen the previous post earlier :( well so I just finished rebooting my system with new kernel (no ipv6) and my network is working as expected. Thanks for all suggestions. I will add the -ipv6 to my portage stuff for the future just in case I forget and need to add support for other applications. Thanks again.

Smart1 · n00b Joined: 16 May 2007 Posts: 66

Thanks many for this Tipp about ipv6.

I made new kernel 2.6.21.3 without ipv6 Support and my Swiftfox works now very quickly. Also with Privoxy and Tor too. :lol: