Slow internet only on Fedora
 

Hi! I just got high speed (10 Megabit) Cable internet in my apartment; and at first all was quite well, and the internet was Coming into my home nice and fast; loading LQ and FedoraForum VERY quickly. But now, my Two Fedora computers (one desktop wired, and one laptop wireless) load pages VERY slowly; sometimes even slower than the DSL (1.5 Megabit) I'm coming off of... The odd thing is, that my Fiancée's Vista Desktop is loading pages just fine... and super fast. I HAVE made a few minor changes, since they set me up, but I don't know why they would only be affecting my Fedora computers. any ideas as to why this may be happening?

Post output of
lspci

ifconfig -a

check
#netstat

#man netstat


check firewall settings

configure services... disable useless ones

I use the outputs from my Desktop, as it is the system I use the most:

the Output of lspci (I have Bolded the Ethernet hardware):
the output of ifconfig -a:
Hope this helps. I wasn't sure if I took too much out
I would've posted the output of netstat, but it was too long. as for disabling "Useless Services" I neither know how, nor know which are useless

These symptoms can be caused by having your home router/NAT device specified as a nameserver. What's in /etc/resolv.conf? If it contains the IP of your NAT device's internal NIC, then change it to one of your ISP's nameservers instead to test.

It's hard to read your posts when you arbitrarily bold words.

srry bout the random boldage... I just try to bold the main Ideas, because I often give too much detail so I bold the main points so that the less-patient can still help me.

Anyway, Unfortunately I'm not knowledgeable enough to know for sure what you mean by "NAT device's internal NIC" but I can tell you that the /etc/resolv.conf files on both my systems are very similar. They each have 3 numbers that I've seen before... in the connection settings windows... They are my primary DNS (which is my router), my secondary DNS and my Tertiary DNS (I think these are from my ISP but not sure... networking isn't my strong point). The only apparent difference between the two files, is that on my laptop there's an extra line on the top that says "search Rome"... Rome was part of my Laptop's old name... In the setup it wanted me to name the computer I called it "Colosseum.Rome" although w/o a ntwork, I'm not sure how necessary it was.

For the sake of testing possible causes, back up your /etc/resolv.conf and then replace its contents with only this:
Do you see an improvement with your problem? (Those are OpenDNS's nameservers, BTW.)

Also, try to disable ipv6
http://blog.taragana.com/index.php/a...ora-linux-why/

Thank you for your posts. I tried both suggestions. Changing the IPs in the resolv.conf file worked very well on both systems. However upon restart, the IPs were restored, and my internet was once again slow (but i know that the reset it supposed to happen). What does the alternate IPs speedimg me up indicate?

Unfortunately disabling IPv6 was impossible as I seem to lack the necessary file (/etc/modprobe.conf) in the proper location

Take a look at post #13 from faislayer in this post
http://www.linuxquestions.org/questi...nstall-718869/

Updade:
Thanks to marko At FedoraForm, I've discovered that my IPv6 is already off. So now I get to figure out the next possible cause of my slow connection. The other lead that I've got, is that editing my /etc/resolv.conf file, and replacing the IPs in it (With IPs from OpenDNS) fixes it... but IDK why, and re-editing the file every time I boot, is annoying, and I'm not entirely comfortable with the whole idea of borrowing someone else's IPs anyway

Visit the OpenDNS URL I posted. They're providing a free beer community service.

If you don't want to change the /etc/resolv.conf every time, then make it system immutable.

# chattr +i /etc/resolv.conf

Or read the dhclient(8) manpages.

AWESOME! this worked.... for a bit... and now both ethernet and Wireless are slow... any other suggestions? is there a way to undo that?

Undoing that attribute setting is as simple as:

# chattr -i /etc/resolv.conf

Keep in mind: if the OpenDNS nameservers are working slowly at the moment, it's probably very temporary. In 2+ years of using them, I have rarely seen noticeable issues.

Thank you. I thought that might do the trick but I wanted to be sure. upon studying my resolv.conf file, i found that it was indeed trying to use my router IP as a nameserver; as well as two other IPs (which logic suggests are my ISP's Nameservers). so I figured I'd just go ahead and use OpenDNS's service and change my router's setup to use those. Unfortunately the original IPs stay put, and OpenDNS's numbers just get added; So OpenDNS sees those, and can't figure out, that its numbers are there too. So I can't move on to step 2... So I've just created a symbolic link to my resolv.conf in my ~/ directory, and edit it manually every time I boot.

Try changing mtu

#ifconfig eth0 mtu 1500


or 1412



#system-config-services
(for modifying services)

@Cassanova: let's revisit and automate the steps here. If you want to exclusively use the OpenDNS nameservers, copy and paste this into a text file called e.g. myscript.sh:
Save myscript.sh, and then from the command line (as root), run:
That should run without errors and you'll be in business again. You should have to do it only once (not every time you boot).

Cool! thanks!