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    Intel i350 teaming issue

    VovanKVN

      Hello.

      Could someone help with the problem below?

       

      The case:

      We have set up teaming for 2 network interfaces.

      There is huge multicast UDP traffic.

      Sometimes we need to join and leave multicast addresses to start\stop listening the data.

      After the messages (below) appear in Event log the teaming falls apart.

       

      Event Log:

      Current Primary Adapter is switching from: Intel(R) I350 Gigabit Network Connection

      Preferred secondary adapter took over: Intel(R) I350 Gigabit Network Connection

       

      Secondary Adapter has rejoined the Team: Intel(R) I350 Gigabit Network Connection

      Preferred primary adapter has been detected: Intel(R) I350 Gigabit Network Connection

      Current Primary Adapter is switching from: Intel(R) I350 Gigabit Network Connection

      Preferred primary adapter took over: Intel(R) I350 Gigabit Network Connection

       

      Little research shows that the problem was initiated by Intel diver in case there are no some heartbeats (even if a heartbeat was late for milliseconds (~100 msec)).

       

      We tried to introduce some delay (2sec) between join\leave multicast group and it allows us to see the problem much less frequently but the problem is still here.

      Also we set the settings:

      Check Time: 3

      Load Balance Refresh Rate: 50

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