1 2 Previous Next 23 Replies Latest reply on Feb 28, 2019 3:27 PM by sgunelius Go to original post
      • 15. Re: HP FlexFabric 20Gb 2-port 650FLB - Gen9 networking inconsistency
        ben_turner_ Novice

        Interesting, good to hear that we are not alone with this issue. HPE have gone very quite on this one at the moment, will keep the thread up to date though as and when updates come through.

        • 16. Re: HP FlexFabric 20Gb 2-port 650FLB - Gen9 networking inconsistency
          ben_turner_ Novice

          I have some progress from HPE!

           

          They have now been able to replicate the fault and have acknowledged that this could well be a driver issue

           

          The issue has now been escalated from the L2 engineers to the L3 engineers for further testing. They have also said that they will be looking for other customers that have reported this issue globally. If anyone has this issue, please log a support request with HPE, drop me an email/message on the VMTN and I'll pass you the incident to reference this with HPE as well so they can tie them together.

           

          Cheers, Ben.

          • 17. Re: HP FlexFabric 20Gb 2-port 650FLB - Gen9 networking inconsistency
            Futuzz Lurker

            Hello I have this same issue but we do not use iscsi, instead we use fc. We experience disconnections from our redundant paths to our SAN and only the hosts with the hardware from the title are affected. Any updates from HP?

            • 18. Re: HP FlexFabric 20Gb 2-port 650FLB - Gen9 networking inconsistency
              ben_turner_ Novice

              Still very much a work in progress with HPE at the moment. Still pushing them, latest is they need to work with VMware and the hardware vendor with the potential of a new driver to be developed.

               

              Interesting to hear that I am not the only one seeing this issue. If you have the ability to log this with HPE then more cases with the same issue with strengthen the case.

               

              I will keep this thread up to date with anything useful though when/if it arises.

              1 person found this helpful
              • 19. Re: HP FlexFabric 20Gb 2-port 650FLB - Gen9 networking inconsistency
                tvanholland Lurker

                Any word from HPE on this? We are running into the same issue. Interesting little twist to what we are seeing is that if we put a significant amount of load on vmnic2 or vmnic3 the links will drop completely. HPE hasn't been able to pin down the issue for us yet.

                • 20. Re: HP FlexFabric 20Gb 2-port 650FLB - Gen9 networking inconsistency
                  ben_turner_ Novice

                  I have had some feedback, but nothing of any significance. They then also proceeded to close my case, despite my request for more time to test this out and produce more evidence as while there seems to be some merit to the details below - it doesn't answer why I see the latency.

                   

                  --------------------------------------------------------------------------------------------------------------------------------------------------
                  This behaviour is expected in case of multi-channel modes.

                  The same physical port will be shared among multiple logical functions in case of a multi-channel mode.

                  For example, Port #A is associated with even numbered logical functions (i.e. 0,2,4,6, etc).
                  and Port #B is associated with odd numbered logical functions (i.e. 1,3,5,7, etc.).

                  Emulex Firmware design is such that, only primary logical functions (i.e. logical function 0 for Port #A and logical function 1 for Port #B) are privileged to modify Port level features like PortSpeed, Autoneg, etc..

                  This is to avoid multiple logical functions choosing different settings which is not possible since the physical port is same.

                  That is the reason that the driver is not advertising negotiation for those non-primary logical functions.

                  ---------------------------------------------------------------------------------------------------------------------------------------------------

                   

                  I have pulled a server from the cluster and intend on doing so further testing on this. However, recent workload has prevented focus on this issue but I am hoping to have some time for testing on this in the next week or so.

                  • 21. Re: HP FlexFabric 20Gb 2-port 650FLB - Gen9 networking inconsistency
                    sgunelius Expert

                    Did you ever find a resolution for this issue?  I'm moving some BL460c Gen9 hosts with the 650FLB to enclosures with the VCFF 20/40 F8 modules and am curious if I'll start seeing the same connectivity issues.  I'll be defining (3) connections for Management, vMotion & VM traffic and (2) for FC SAN.

                    • 22. Re: HP FlexFabric 20Gb 2-port 650FLB - Gen9 networking inconsistency
                      tvanholland Lurker

                      Not OP but we did end up resolving the issue by changing the port speed on our enclosure uplinks to auto negotiate instead of statically assigned. This was a change by our network team on the virtual port channel configuration. Haven't had any connectivity issues since.

                      • 23. Re: HP FlexFabric 20Gb 2-port 650FLB - Gen9 networking inconsistency
                        sgunelius Expert

                        We started seeing PSODs with the BL460c Gen9 running 6.5 Update 1 and HPE identified an issue with the 650FLB driver in the HPE custom image.  We had only just started migrating to G3 enclosures and leveraging the 650FLB as a CNA.  We got the PSOD with the hosts under a relatively heavy load.  HPE recommended we upgrade to 6.5 Update 2, but confirmed the driver issue was resolved with 6.7 Update 1, so we rebuilt our BL460 Gen9s with HPE custom image VMware-ESXi-6.7.0-Update1-10302608-HPE-Gen9plus-670.U1.10.3.5.12-Oct2018.

                         

                        We also fully patched them afterwards, which dropped down additional 9 patches, so our hosts are showing hypervisor VMware ESXi, 6.7.0, 11675023.  Knock on wood, no PSOD since then and I'm just about done migrating the BL460c Gen9 hosts off my original G1 enclosures.

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