Akemi, Thanks for the link. I already researched that one. The systems in question do not have SCSI and buying new NIC cards will not work. -connie sieh On Wed, 11 Feb 2009, Akemi Yagi wrote: > On Wed, Feb 11, 2009 at 1:31 PM, Connie Sieh <[log in to unmask]> wrote: >> There are lots of reports of issues like this for tg3 but most reports end >> in "did not hear from requester so closing" or "Fedora Core X is not >> supported any more so closing". Does anyone know of a real solution to this >> problem. Reading all the bugzilla and Google results for this problem make >> my head hurt :-) . Note that the error message >> "tg3_stop_block timed out" can be a generic message thus having many causes. >> >> We have been experiencing intermittent network failures on systems running >> SLF47 2.6.9-78.0.1 kernel/tg3 3.86 driver . They waiting for the tcp to >> finish, which never happens. The failures are load-related. >> >> This error happened from time to time over the life of these nodes >> but they were operating more or less stably under SLF45/x86_64, tg3 3.77 >> driver. >> >> There are reports of this issue for RHEL 5 too. > > I see one success story in the CentOS forum here (note #4): > > http://www.centos.org/modules/newbb/viewtopic.php?viewmode=flat&order=ASC&topic_id=15932&forum=39 > > May not be a solution for all cases but at lease something to look at. > > Akemi >