Hi- Thanks for the reply. I still have some more doubts ... please find then inline.
Kindly help me understand these... On Tue, Dec 11, 2012 at 2:59 PM, Gary Kotton <[email protected]> wrote: > On 12/11/2012 09:50 AM, Trinath Somanchi wrote: > > Hi- > > I have the following first set of doubts regarding the Folsom Quantum > > [1] With regard of Quantum Plug-in, How does the RPC communication take > place between the Agent and the plug-n ? In the source code, > ovs_quantum_plugin.py, I find the setup_rpc method and AgentRPCAPI class > what does the reverse RPC tasks. Can any one guide me on understanding this. > > > When the OVS detects that a new interface has been added it will query the > plugin for the interface details. This will enable it to create the > relevant networking for the specific interface, for example tags etc. The > agent requests information from the plugin when it detects that there is a > new resources. > In addition to this there are cases when the plugin will notify the agent > - for example if the admin status of a port has changed. > > > > [2] What is the significance of the file quantum/db/dhcp_rpc_base.py? > Many plugins in the quantum/plugins directory use the methods in the class. > > > This enables the DHCP agent to request information from the plugin. > > Trinath>> But then dhcp-agent has to use this api. But why the plugins are using this api? I see in the source code that, ryu, nec and ovs plugins use this dhcp_rpc_base for redirected processing of data. > > [3] With core_plugin configuration being in place, can we have some > other plugin too existing in Quantum? Can any one guide me on how to > achieve the same, like a Fake plugin? > > > In V2 there is no fake plugin. There are a number of different plugins > that make sue of the base DB plugin - for example the linuxbridge, > openvswitch, NEC, RYU etc. > > > > [4] Why OVS quantum Plug-in doesn't support create/update/delete of port > and subnets? > > > The OVS plugin inherits the base plugin. If it does not need to make any > additions then it will use the base methods implementation. If you look at > https://review.openstack.org/#/c/16210/ you will see that in some cases > changes need to be made - for example extending the ports to support > security groups. > > > > > Kindly help me understand these ... > > > It is all pretty complicated. My suggestion would be to get a evstack > installation up and running and playing around with the configurations and > the agents. Once you start to understand how all of the components interact > it will be easier to follow. > > > Thanks in advance > > > > -- > Regards, > ---------------------------------------------- > Trinath Somanchi, > +91 9866 235 130 > > > > _______________________________________________ > Mailing list: https://launchpad.net/~openstack > Post to : [email protected] > Unsubscribe : https://launchpad.net/~openstack > More help : https://help.launchpad.net/ListHelp > > > > _______________________________________________ > Mailing list: https://launchpad.net/~openstack > Post to : [email protected] > Unsubscribe : https://launchpad.net/~openstack > More help : https://help.launchpad.net/ListHelp > > -- Regards, ---------------------------------------------- Trinath Somanchi, +91 9866 235 130
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