network woes

[Mark Phillips]

Trent,

I ran into a similar problem today - my network slowed waaaaaaaaaaaaaay down
on me. All I used was ping to methodically to check all the connections and
found that a switch was reseting itself and dropping packets. Basically, I
turn everything off, reset all the routers, cable modems, etc, and then turn
on one piece of equipment at a time and ping to the main router to see if I
can connect and if there is any packet loss. You can find a out a lot of
information by being methodical and knowing your network topology.

Good Luck!

Mark

On Tue, Dec 22, 2009 at 5:52 PM, Trent Shipley <tshipley at deru.com> wrote:

> Somewhere my connection to the Internet is borken.  Load times take
> forever.  It doesn't seem to effect the wireless client routers, but I
> have had trouble on both the wired machines under Ubuntu 9.10 and
> Windows Vista.  Sometimes the Linux machine effectively looses
> connectivity with the Internet.  It comes back if I log out of my X
> session and log back in ... most of the time.  I have a firewall router,
> but effectively no household LAN since I've been too lazy to really
> figure out how to configure the Ubuntu desktop machine as a primary
> domain controller, then adjust it's firewall to suit.
>
>
> I'd like an idiot friendly tool to help track this problem down,
> preferably on the Linux machine which seems to experience the problem
> most consistently.
>
> Baring a GUI tool friendly to mortal users, I am not above using the
> @#$% command line and a text editor.
>
>
> I am not too network savvy.  I have to look up the layers of the OSI
> stack every time.  What is a reasonable diagnostic or fault tree for
> approaching my symptoms.
>
> It is also worth noting that this problem seems to date back to
> precisely when I upgraded from Ubuntu 9.04 to 9.10.
>
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