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. > 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. --------------------------------------------------- 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