On Tue, Jul 9, 2013 at 7:59 AM, Graeme Carstairs <[email protected]> wrote: > Well after much brain scratching port mirroring wire sniffing etc. > > The power definitely isn't an issue. > > And the ADSL is a combined router modem, ADSL public IP, LAN side private > IP, and its the adsl connection on the wan port thats dropped. > > It dawned on me the other network we tested this PC on is 100Mb and its home > netowrk is Gb > > Set the switch port and card to 100Mb full duplex instead of autodetect and > I can power it off and on without the ADSL being affected. > > set it back to gig and on the windows login screen appearing the ADSL > switches off and comes back in a few seconds/minutes. > > Now prior to this mornings testing we had treid 2 diefferent Netgear ADSL > Routers and a Zyxell and the same issue occured. > > Again when on gig networking there is no errors on the wire, no packet > storms, no unusual traffic nothing reported anywhere apart from internet > access failed till the ADSL resets. > > So that PC is getting left at 100Mb just now. > > Graeme > > > > > > > > On 9 July 2013 13:58, Jonathan Kadoo <[email protected]> wrote: >> >> Does the adsl have an interface to the internal network? If so could it >> be that the pc and adsl have same ip? >> >> >> On Tue, Jul 9, 2013 at 5:22 AM, Graeme Carstairs <[email protected]> >> wrote: >>>> >>>> Hi >>> >>> We have a client with SBS essentials 2011 >>> >>> A smart switch and a Adsl broadband >>> >>> They are having intermittent issues with their broadband the provider is >>> looking into. >>> >>> The bizarre issue is one pc when it is switched on just as the Ctrl alt >>> del appears the Adsl goes down for a few minutes then starts up >>> >>> Checked the pc no viruses/Trojans etc >>> >>> The nic isn't spewing traffic >>> >>> The switch shows no errors >>> >>> I've tried the pc on a different network with no issues >>> >>> Tried different cables and ports >>> >>> And just now dropped the speed of the nic to 100MB >>> >>> but there are no errors other than the Adsl dropping >>> >>> It doesn't help that it drops occasionally when the pcs not there >>> >>> But it happens every time the pc is switched on >>> >>> Any suggestions >>> >>> Graeme
Sounds like that switch isn't so smart, if it can't handle autonegotiation without killing other ports. Kurt
