Hi,
I'm new to openVswitch and Ryu. There is a description about using Ryu Network
Operating System with OpenStack as Openflow controller in Ryu 1.2
documentation.
However, this instruction is a little bit complicated for anewbie like me,
so I'm thinking about using openVswitch directly with Ryu without
OpenStack. Hence I follow the following steps.
1. I install Ryu using source from github.
2. I also install openvswitch on my system.
3. Then I setup a secure channel between ryu and the openvswitch as
mentioned in
http://osrg.github.com/ryu/doc/tls.html
4. sudo ovs-vsctl show gives the following output.
df19569b-d38b-41a5-a723-fb80504cd5e5
Bridge "br0"
Controller "127.0.0.1:6633"
Port "br0"
Interface "br0"
type: internal
ovs_version: "1.4.0+build0"
5. I run ryu-manager with two applications
a) simple_switch.py
b) rest.py
as shown below.
sudo ryu-manager ryu/app/simple_switch.py ryu/app/rest.py
The output that I get is as follows.
[sudo] password for karthik.sharma:
loading app ryu/app/simple_switch.py
loading app ryu/app/rest.py
loading app ryu.controller.ofp_handler
creating context wsgi
creating context network
instantiating app ryu/app/rest.py
instantiating app ryu.controller.ofp_handler
instantiating app ryu/app/simple_switch.py
My question is as follows.
I would like to write an application that does topology discovery of
openvswitches.
I tried running sudo ryu-manager ryu/topology/dumper.py again it gave
similar output as above.
- this apps dumps discovery events? (what are discovery events?)
- where does it dump it?
- do I have to trigger something inorder for the app to produce an output?
How can I see the output?
Kind Regards,
Karthik
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