On Tue, 26 Jul 2016 16:55:15 +0200 Wim <wimwerk...@gmail.com> wrote: > Hi, > > We're using XL710 cards on linux 4.4.15 using the latest driver 1.5.19 and > it seems that link detection isn't working correctly. > > We've got multiple servers with 2 cards, the first port of every card is > put in to a LACP portchannel with a cisco switch (4500x, 4900m). When we > bring the portchannel down on the cisco side, most of the time only one > card detects the link down. Sometimes none of them, seldom both. > > Ethtool detects there something wrong though, look at speed and duplex, but > thinks the link is still up. > > I found those 2 mails > http://www.spinics.net/lists/netdev/msg347183.html > http://lists.osuosl.org/pipermail/intel-wired-lan/Week-of-Mon-20160314/004433.html > > And enabling linkpolling on those cards fixes the issue. So maybe it should > default be enabled again ? > > Thanks, > > Wim
I similar the same thing (with DPDK) and reported it to Intel. There seems to be a firmware bug where the link state of the second port is always down if the first port is down. My guess is that the ports get confused somewhere in the firmware for link detect. ------------------------------------------------------------------------------ What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic patterns at an interface-level. Reveals which users, apps, and protocols are consuming the most bandwidth. Provides multi-vendor support for NetFlow, J-Flow, sFlow and other flows. Make informed decisions using capacity planning reports.http://sdm.link/zohodev2dev _______________________________________________ E1000-devel mailing list E1000-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired
