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[LIU Yulong <yulong@xxxxxxxxxxxxx>]

Public bug reported:

When subnets or security group ports quantity reach 2000+, it is really
too hard to do trouble shooting if one VM lost the connection. The flow
tables are almost unreadable (reach 30k+ flows). We have no way to check
the ovs-agent flow status. And restart the L2 agent does not help
anymore, since we have so many issue at scale.

This is a subproblem of bug #1813703, for more information, please see the summary:
https://bugs.launchpad.net/neutron/+bug/1813703

** Affects: neutron
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1813708

Title:
  [L2][scale issue] ovs-agent has too many flows to do trouble shooting

Status in neutron:
  New

Bug description:
  When subnets or security group ports quantity reach 2000+, it is
  really too hard to do trouble shooting if one VM lost the connection.
  The flow tables are almost unreadable (reach 30k+ flows). We have no
  way to check the ovs-agent flow status. And restart the L2 agent does
  not help anymore, since we have so many issue at scale.

  This is a subproblem of bug #1813703, for more information, please see the summary:
  https://bugs.launchpad.net/neutron/+bug/1813703

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