Empirically, kulakwitsa kwakukulu kunapezeka mu D-Link DGS-3000-10TC switch (Hardware Version: A2), yomwe imalola kuti kukana ntchito kuyambitsidwe potumiza paketi yapaintaneti yopangidwa mwapadera. Pambuyo pokonza mapaketi oterowo, kusinthaku kumalowa m'malo okhala ndi 100% CPU katundu, zomwe zingathetsedwe ndi kuyambiranso.
Pofotokoza vutoli, thandizo la D-Link linayankha "Masana abwino, pambuyo pofufuza kwina, opanga amakhulupirira kuti palibe vuto ndi DGS-3000-10TC. Vutoli lidali chifukwa cha phukusi losweka lomwe linatumizidwa ndi DGS-3000-20L ndipo pambuyo pokonza palibe vuto ndi firmware yatsopano. Mwa kuyankhula kwina, zatsimikiziridwa kuti kusintha kwa DGS-3000-20L (ndi zina zomwe zili mndandandawu) zimaswa paketi kuchokera kwa kasitomala wa PPP-over-Ethernet Discovery (pppoed), ndipo vutoli likukhazikika mu firmware.
Panthawi imodzimodziyo, oimira D-Link samavomereza kukhalapo kwa vuto lofananalo mu chitsanzo china cha DGS-3000-10TC, ngakhale kuti amapereka chidziwitso chomwe chimalola kuti chiwopsezo chibwerezedwe. Atakana kukonza vutoli, kuwonetsa kuthekera kochita chiwembu komanso kulimbikitsa kumasulidwa kwa firmware yosinthidwa ndi wopanga, kutayira kwa pcap kwa "phukusi la imfa" kudasindikizidwa, komwe kungatumizedwe kukawona vuto. pogwiritsa ntchito tcpreplay utility.
Source: opennet.ru