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. --------------------------------------------------- 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