Hello,
With current implementation of mac learning in VPP, it is possible to configure 
maximum number of learned entries. This limit is global and shared by all 
bridge domains in a given VPP instance.
I am considering implementing a per bridge domain limit making sure that a 
bridge domain can’t exhaust all available entries.

I would like to gather the opinion from the community on that:

  1.  Shall we keep the global limit and add a per bridge domain limit?
  2.  Shall we only implement a per bridge domain limit and remove the global 
limit?

My personal opinion is that #2 may be enough. It guarantees that the overall 
system can’t run low in memory because of too many learned addresses. However, 
it would change the existing behavior.
Do people have an opinion about that ?

Jerome
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