we have seen on EXOS 15.1 and EXOS 15.2 base software version for X440 switch, some ports stops forwarding the traffic at random interval of time. those port never learn mac address. I would suggest to upgrade the switch to EXOS 15.,3.1.4 patch 1-33 and see if you are facing the similar issue.
AndreiLLW stands for Limited Lifetime Warranty. LLW is for the Hardware so if there is a physical issue it will be replaced. I would recommend Sumit's suggestion first.ThanksP
If you have upgraded the switches to EXOS 15.3.1 patch 1-33 and still seeing the issue, open the case with TAC.
Hey AndreiThe extended diagnostics cover a lot of the HW testing but there are some things it may not catch. TAC can also look at the Show Tech file or see if there are any dumps to help determine the issue.ThanksP
my problem is that ,when i connect the switch(summit x440) with pc's the switch is not working but the lights of all ports are green....
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