I think he means if you are connected to a switch and the connection to another device on the switch is removed. In this case there is no loss of link since the switch maintains that but there is a loss of connection.
>-----Original Message----- >From: lwip-users-bounces+bauerbach=arrayonline....@nongnu.org >[mailto:lwip-users-bounces+bauerbach=arrayonline....@nongnu.org] On >Behalf Of Krzysztof Wesolowski >Sent: Tuesday, August 21, 2012 3:59 PM >To: Mailing list for lwIP users >Subject: Re: [lwip-users] how to detect cable down in this case > >Lwip is "just" network a stack, it does not interact with physical >medium directly. > >In ethernet application usually (always?) PHY i responsible for link >up/down, >negotiation, mode configuration etc. > >So your driver must detectrelated events and/or check state, and >report it to LwIP. > >Regards, >Krzysztof Wesołowski, > > >On Tue, Aug 21, 2012 at 9:42 PM, vincent cui <vincent....@enlogic.com> >wrote: >> Hi: >> >> When internet cable is plugged into board, but another side is plugged >out >> Slotn how lwip know that the cable is down? >> >> Vincent >> >> _______________________________________________ >> lwip-users mailing list >> lwip-users@nongnu.org >> https://lists.nongnu.org/mailman/listinfo/lwip-users > >_______________________________________________ >lwip-users mailing list >lwip-users@nongnu.org >https://lists.nongnu.org/mailman/listinfo/lwip-users _______________________________________________ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
