Comment 4 for bug 1602614

venkata anil (anil-venkata) wrote :

Change https://review.openstack.org/#/c/255237/ is the complete fix for this bug.

In this change, flood flows to all HA router's nodes are established during router interface add, through l2pop. After transition to master, keepalived sends GARP. When compute nodes receives this GARP message, they add unicast flow to the master HA node. So to create flows during failover, no interaction between neutron components( i.e processing of port binding and update, and also l3 agent and server interaction for updating router states) is required, hence reduction in ovs flow setup time and minimize packet loss.