Sumit,

The integration bridge is defined in the ovs_quantum_plugin.ini file.

This is the name of the OVS integration bridge. There is one per hypervisor.

The integration bridge acts as a virtual "patch port". All VM VIFs are

attached to this bridge and then "patched" according to their network

connectivity.

integration-bridge = br-int

Has this bridge been created on your host? You might need to create is manually using:

sudo ovs-vsctl --no-wait add-br br-int

The database communication params are also defined in the same ini file, verify if the settings match your mysql installation and the database exists:

[DATABASE]

This line MUST be changed to actually run the plugin.

Example: sql_connection = mysql://root:nova@127.0.0.1:3306/ovs_quantum

Replace 127.0.0.1 above with the IP address of the database used by the

main quantum server. (Leave it as is if the database runs on this host.)

sql_connection = mysql://root:nova@localhost/ovs_quantum

Hey Sumit

Since quantum runs as a single service on a single host and not as a distributed service like nova-network etc; the ovs agent instead runs on each host and does the actual underlying configuration like adding tap interfaces and gateways on hosts.

It does scan the database periodically for and additions/removals of ports and networks.

Have you tried starting any VM's in your cloud? the agent only comes into play when ports and vlans have to added/removed to the bridge.