On Sat, Jan 2, 2010 at 9:08 PM, Trent Shipley wrote: > Eric Shubert wrote: > > > Trent Shipley wrote: > > > >> Eric Shubert wrote: > >> > >>> Trent Shipley wrote: > >>> > >>>> Benjamin Francom wrote: > >>>> > >>>>> On Tue, Dec 22, 2009 at 7:18 PM, Mark Phillips > >>>>> wrote: > >>>>> > >>>>>> 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 > 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. > >>>>>>> > >>>>>>> --------------------------------------------------- > >>>>>>> PLUG-discuss mailing list - PLUG-discuss@lists.plug.phoenix.az.us > >>>>>>> To subscribe, unsubscribe, or to change your mail settings: > >>>>>>> http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss > >>>>>>> > >>>>>> --------------------------------------------------- > >>>>>> PLUG-discuss mailing list - PLUG-discuss@lists.plug.phoenix.az.us > >>>>>> To subscribe, unsubscribe, or to change your mail settings: > >>>>>> http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss > >>>>>> > >>>>>> > >>>>> Unplug all devices for at least one min. Start with modem and work > >>>>> your way up to the PC > >>>>> The Vista and Ubuntu machines are separate machines, not a single > dual > >>>>> boot, right? > >>>>> > >>>>> tracert=windows > >>>>> traceroute=linux > >>>>> --------------------------------------------------- > >>>>> PLUG-discuss mailing list - PLUG-discuss@lists.plug.phoenix.az.us > >>>>> To subscribe, unsubscribe, or to change your mail settings: > >>>>> http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss > >>>>> > >>>> I have "rebuilt" the network a couple of times from the modem up. My > >>>> suspicion is focused on the Ubuntu desktop because of the coincidence > >>>> that the problem started with a major upgrade. > >>>> > >>>> Yes. We have the following on the network ... not all at the same > time. > >>>> * Qwest modem, outside the firewall. > >>>> * Netgear wired/802.11g wireless router. No evident problems with > >>>> wireless connections. > >>>> * Ubuntu 9.10 on Dell hardware. Wired connection. (Main suspect) > >>>> Thinking about putting in a new Ethernet card since I have it "in > stock" > >>>> anyway and it's doing me no good in the box. > >>>> * Apple notebook. Wired connection. > >>>> ** Windows Vista. Have seen some symptoms. > >>>> ** OS X. mild symptoms. > >>>> * Apple notebook. Wireless. No known symptoms. > >>>> * Apple iMac. Wireless No known symptoms. > >>>> * (Occasional) HP netbook running Ubuntu 9.10 netbook remix. > Wireless. > >>>> No known symptoms. > >>>> > >>> That's helpful. > >>> > >>> I really doubt the upgrade was a cause of any kind, given that your > >>> Apple notebook (other wired) connection also experiences problems. > >>> > >>> Have you tried alternate wired ports on the Netgear router? Sometimes a > >>> single port/plug can be defective. The whole wired side of the router > >>> might be failing as well. > >>> > >> I have tried swapping wires and ports. It doesn't seem to help. > >> > >> > >>> Do you have a switch you can put in place of the wireless router to see > >>> if the problem persists? > >>> > >> I don't have a spare switch. Of course switches aren't too expensive. > >> I just don't have much use for it outside of testing unless I change my > >> network architecture to something like, > >> * Router > >> ** Wired switch > >> *** wired computers. > >> > > > > I don't think that'll buy you anything, especially if the wired part of > > your router is hosed. I would try something more like this: > > * DSL modem > > ** Wired switch > > *** wired computers > > *** wireless router > > > > FWIW, this isn't really the best from a security standpoint, but I don't > > think it's any less secure than what you have now. > > > > > >>> Does your DSL modem do dhcp/nat? (most do these days) > >>> > >>> > >> The DSL modem definitely does dhcp. I do not know if NAT is being done > >> by the modem or the router. > >> > > > > Probably both. That's not necessarily a problem. You don't want both the > > DSL modem and the router providing dhcp on the same subnet though. > > > > > A new router solved the problem. Everything wired is faster. The > Ubuntu machine is much faster. > > Now back to that Fedora (virtual box): WinXP; Win7 problem. > --------------------------------------------------- > Yes, I love my GIG-E cable modem, even if the thing was expensive, the code is freely available for reverse engineers on Cisco's site, and it fails over into a fine 8080 remo man overflow. -- Skype: (623)239-3392 AT&T: (503)754-4452 http://obnosis.110mb.com/nuke/index.php http://uncyclopedia.wikia.com/wiki/Arizona