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Traffic forwarding stops when ARP entry is programmed without port number

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TitleTraffic forwarding stops when ARP entry is programmed without port number
Symptoms
This issue can be mostly seen with NLB servers where the port number for ARP entry is not programmed. If ARP entry does not have port number, then it's corresponding hardware entry will be programmed with port 0 which means it should be lifted to CPU and forwarded by CPU.
Environment
  • EXOS 16.1.3.6 patch1-7
  • Summit Stack only
  • NLB
Cause
This is found to be a software issue and the same is corrected, please check the resolution section for the fixed version.
Resolution
The switch needs to be upgraded where this issue is fixed. 
CR number xos0067253
16.1.4.2-patch1-10 and later 
16.2.3.4 and later 
21.1.3.7-patch1-2 and later 
Additional notes

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