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From: sujith sankar <sujithsankar2@gmail.com>
Date: Tue, 3 Oct 2017 17:23:01 +0530
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To: dev@dpdk.org
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Subject: [dpdk-dev] ixgbe - link state change detection of port-channel
 members triggered from Cisco Nexus 9000
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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