Am 28.03.2016 um 11:27 schrieb Götz Reinicke <goetz.reini...@filmakademie.de>: > We have three supermicron servers with two 10Gb Ports each, connected to a > cisco switch stack 1Gb ports. All are on auto speed. > > I configured a LACP bond on both sides on all servers, first with citrix xen > server. > > On one server eth0 goes down from time to time … maybe within minutes, > someday it is up for some hours. > > Two server are fine; the bond is up for 24 days(!) now without any problem. > > Recently I installed centos 7.2 on that server in question and - bam - eth0 > is going down from time to time … > > I checked patch cables, tried an other switch port channel, reconfigured the > ports, reinstalled the os. Same behavior. > > And: We got a replacement server. Same behavior …. :) > > Currently the cisco tech guys don’t see a problem on the switch (which is up > for 3 Years now with 10+ servers connected … no problem so far), from the > citrix side I don’t get much more hints. > > In the logs i just have a Nic Link is Down … Nic Link is Up. It is always > eth0. > > Question: > > Any idea ? One suggestion was Disable all power saving features in the server > bios. Did not do that yet. > > Is there any chance to set some sort of higher debug level for that > nic/kernel/whatever to get some server os side feedback why the port goes > down?
How is your interface exactly configured ? -- LF _______________________________________________ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
