Hello netdev readers, I'd like to consult following problem we're dealing with:
I have a cluster of three nodes connected to stacked Brocade ICX6610 switches using bonded AOC-STGN-i2S adapters (they're using 82599ES chipsets). The problem is, I see random link failures on practically all interfaces. Link always goes down for very short time, then adapter is reset and link goes up again. Here's dmesg snippet: [Jan22 22:09] ixgbe 0000:03:00.0 eth0: NIC Link is Down [ +0.005610] ixgbe 0000:03:00.0 eth0: initiating reset to clear Tx work after link loss [ +0.012792] bond0: link status definitely down for interface eth0, disabling it [ +1.105826] ixgbe 0000:03:00.0 eth0: Reset adapter [ +0.307518] ixgbe 0000:03:00.0 eth0: detected SFP+: 3 [ +0.145881] ixgbe 0000:03:00.0 eth0: NIC Link is Up 10 Gbps, Flow Control: RX/TX since I'm using bonding, it doesn't disrupt traffic, but I'd still like to resolve it. We're using 5m passive SFP cables, we tried replacing one with 3m piece, to no avail. all three boxes are supermicro X10DRW, running vanilla x86_64 4.0.5 kernel (I'll upgrade it to 4.1.16 soon) we were using broadcom adapter before and they were working without such problems (except for one particular port, which showed mysterious packet drops every few months, thats why we switched to intel-based adapters), so I think cables and switches should be fine, but I'm not sure of course I think I've seen similar problems and they were PM related, but I'm not sure.. anyone seen similar problem? or some tips on how could I debug it? If I could provide more information, please let me know BR nik -- ------------------------------------- Ing. Nikola CIPRICH LinuxBox.cz, s.r.o. 28.rijna 168, 709 00 Ostrava tel.: +420 591 166 214 fax: +420 596 621 273 mobil: +420 777 093 799 www.linuxbox.cz mobil servis: +420 737 238 656 email servis: ser...@linuxbox.cz -------------------------------------
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