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VOSS & VSP8600: VIST peer mac learned on non-ist port reports wrong port

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TitleVOSS & VSP8600: VIST peer mac learned on non-ist port reports wrong port
Symptoms
  • Customers may observe following error message reporting an incorrect port reference involved in a MAC address movement or loop.
1 2019-06-16T20:47:21.482+02:00 exielc02 IO1 - 0x00138535 - 0004e001 DYNAMIC NONE GlobalRouter COP-SW INFO VIST peer mac 64:6a:52:e3:5d:26 on VID 998 is learnt on non-IST port 3/16, Pointing record back to IST port.Total Peer Mac Move Count: 625432 

 
Environment
  • VSP4000
  • VSP7200
  • VSP8400
  • VSP8600
  • VOSS releases prior to 7.1.5.0 & 8.0.7.0
  • VSP8600 releases prior to 6.3.3.0
Cause
This was the result of a software bug that was present in the VOSS 7.1 & 8.0.x release stream as well as the VSP8600 6.3 release stream reporting the incorrect port when a VIST Peer Mac address is learnt on another (non-VIST) port. The incorrect port reference prevented identifying the source of a potential loop as the message would be generated when a potential loop condition had manifested itself.

 
Resolution
This has been addressed in VOSS releases 7.1.5.0, 8.0.7.0 & 8.1.0.0 upwards and in VSP8600 release 6.3.3.0.
Additional notes

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