[dpdk-dev] ixgbe - link state change detection of port-channel members triggered from Cisco Nexus 9000

sujith sankar sujithsankar2 at gmail.com
Wed Oct 18 06:27:40 CEST 2017

Hi all,

It would be great if someone could help me with this.


On Tue, Oct 3, 2017 at 5:23 PM, sujith sankar <sujithsankar2 at gmail.com> wrote:
> Hi,
> While testing port-channels (LACP) on ixgbe, I observed that when
> port-channel member interfaces are brought down from Cisco Nexus 9000
> switch, ixgbe PMD is not detecting it.  It was seen that LSC
> interrupts are not getting generated.  This behaviour is intermittent
> and is not seen with Linux kernel mode driver.
> We are using DPDK 16.04 in our code.
> Please find below the details of the NIC and switch.
> NIC firmware version : 0x80000887
> Switch : Cisco Nexus9000 C9372PX (observed the same on Nexus 7000 also)
> Switch firmware : 7.0(3)I1(3)
> This behaviour was not observed while testing with Cumulus or Netgear switches.
> Could the maintainers of ixgbe confirm if there are any such
> inter-operability problems between Cisco switches and Niantic cards?
> Also, is there any work-around for this?
> Thanks,
> -Sujith Sankar

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