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[Launchpad Bug Tracker <1463375@xxxxxxxxxxxxxxxxxx>]

[Expired for neutron because there has been no activity for 60 days.]

** Changed in: neutron
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1463375

Title:
  Use fanout RPC message to nofity the security group's change

Status in neutron:
  Expired

Bug description:
  when a security group members or rules change, if it just notify the l2 agents with 'security_groups_member_updated' or 'security_groups_rule_updated', the all related l2 agents need to get the security group details through RPC from
  neutron-server, when the number of l2 agents is large, the load of neutron-server is heavy.
  we can use fanout RPC message with the changed sg details to notify the l2 agents, then l2 agents which has the related devices update the sg information in their memory, they do not need to get the sg details through RPC.

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