Further information on this conundrum: I have tried with two new and completely different network cards. The problem is always the same. All loading of modules and bringing up of both the rtnet and the non-rt card functions without complaint. I follow the instructions posted on this mailing. However the actual communication on both is impossible. The response is as though there is a connection but no response can be perceived i.e. there is never any reply from any client. It is possible that the sent message never gets onto the bus in both cases (rt and non-rt) but the operating system is not aware of this and then just warns that there is no response from the client being addressed. I will use wireshark to see whether any messages are being emitted for example when ping tells me that the host is unreachable.
Any advice as to how I could home in on the problem would be greatly appreciated. I badly need the ability to have both a non rt network and rt network connected to a PC. Kind regards, Roland. Roland Tollenaar wrote: > Hi, > >> >> which means you might have used the wrong interface. >> Anything beyond that is a configuration issue that you have to work out. > I doubt it. > > I have a very simple situation > Before any real time rtnet is activate the realtek card is eth0. > I leave this card on and and ping a host. Pinging is succesful and I > leave it on to see at what point things go wrong. > > -I then rmmod e1000 (for the other network card) > -pinging on eth0 still going > -I mknod bla di bla > -pinging on eth0 still going > -I insmod rtnet.ko > -pinging on eth0 still going > -I insmod rtpacket.ko > -pinging on eth0 still going > -I insmod rt_loopback.ko > -pinging on eth0 still going > -I insmod rt_e1000.ko > -pinging on eth0 still going > -I rtifconfig rtlo up > -pinging on eth0 still going > -I rtifconfig rteth0 up > --pinging on eth0 STOPS dead!!! > > After about 15 seconds it (ping on eth0) gives > > From 10.0.0.6 icmp_seq=# Destination Host Unreachable > > and sometimes: ping sendmsg: No buffer space available > ???? Never seen that one before :) > > I then try > > ifconfig eth0 up > > which executes but makes no difference. > > I tried using rteth1 instead of rtet0 but that does not help either. > > If I then unplug the ethernet cable from the realtek card the PC tells > me the connection on eth0 was broken. So it still thinks that the > realtek card is eth0 but somehow it is dead. > > Any ideas because this, from what you posted, does not seem normal to me? > > Afraid my concern about running normal ethernet with another NIC on > rtnet was justified? :( > > Best regards, > > Roland > > > > > >> >> CU Fabian Koch >> TabascoEye >> >> ------------------------------------------------------------------------- >> This SF.net email is sponsored by: Splunk Inc. >> Still grepping through log files to find problems? Stop. >> Now Search log events and configuration files using AJAX and a browser. >> Download your FREE copy of Splunk now >> http://get.splunk.com/ >> _______________________________________________ >> RTnet-users mailing list >> RTnet-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/rtnet-users >> > ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ RTnet-users mailing list RTnet-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/rtnet-users
