Hello,
On Wed, Mar 31, 2010 at 12:50 PM, Rick Stevens <ricks@xxxxxxxx> wrote:
> On 03/31/2010 09:07 AM, Oliver Ruebenacker wrote:
>> Hello,
>>
>> On Tue, Mar 30, 2010 at 6:28 PM, Rick Stevens<ricks@xxxxxxxx> wrote:
>>> On 03/30/2010 12:06 PM, Oliver Ruebenacker wrote:
>>>> Hello,
>>>>
>>>> Since two or three days, my network connection seems to have become
>>>> much slower. Loading websites with Firefox now takes a mutliple of the
>>>> time, and I am having sporadic "no mirrors found" errors with yum. I
>>>> am running F12 on a Dell Latitude D820 laptop, and I am connected by
>>>> wire to a router. There has been no noticeable change on two Windows
>>>> machines connected to the same router. All machines connect via DCHP.
>>>>
>>>> What can I do to diagnose or fix the problem? Thanks!
>>>
>>> First, "ifconfig -a" and look at the error counts for each interface.
>>> If you see a lot, then you start looking at hardware (bad cables, dirty
>>> or loose connectors, flakey NICs, etc.).
>>>
>>> If the errors look OK, have a look at your (DSL|cable) modem's
>>> statistics and see if there's something odd going on at the WAN side
>>> of things. If using cable modem or DSL, you may need to reboot your
>>> router and/or modem. I make a habit of doing that every six months
>>> or so.
>>>
>>> If you're running nscd, purge your nscd DNS cache ("nscd -i hosts").
>>
>> ifconfig shows no errors. I restarted the router and did nscd -i
>> hosts, and it got worse. Now, opening some pages (e.g. BBC News) takes
>> more than half a minute. The Windows machines connected to the same
>> router, on the other hand, load web pages just fine.
>
> If you use DHCP, you need to restart the network bit on your Linux.
> machine if you reboot the router. The easiest way is to reboot the
> system. To do it manually:
>
> Network Manager: "sudo service NetworkManager restart"
> Classic Network: "sudo service network restart"
Thank you, this time rebooting helped a lot. I think it is still
slower than usual, but definitely faster than before.
Take care
Oliver
--
Oliver Ruebenacker, Computational Cell Biologist
Systems Biology Linker at Virtual Cell (http://vcell.org/sybil)
Turning Knowledge Data into Models
Center for Cell Analysis and Modeling
http://www.oliver.curiousworld.org
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