[OVSDB-14] Avoid adding redundant Openflow Controller entries

Blocks — Tue, 31 Mar 2015 12:24:52 +0000

The OVSDB library and neutron automatically adds openflow controller entries to any newly added bridge or existing bridges. It does so by not affecting any of
the existing controller configuration. While it is a good idea not to impact
the existing config, it is also good not to add redundant controller config.
Having multiple openflow channels connecting back to the same controller is causing issues and must be avoided.

Hence we can either clear all the existing openflow controller entries and add new entries (This will cause a openflow connection flap). Or.
Avoid adding a new controller entry if the existing OVS bridge is configured with Openflow configuration with one of the ODL controller's ip-addresses.

OpenDaylight JIRA

[OVSDB-14] Avoid adding redundant Openflow Controller entries