Thank you for your reply.
I added the same code. However, I only can see the list of switches and the
list of links is empty (Links between switches are wireless.)
I used the following lines to see links.
links_list = get_link(self.topology_api_app, None)
print links_list
Do you have any suggestion to fix the problem?
Thank you
On Thu, Mar 1, 2018 at 9:06 PM, Iwase Yusuke <iwase.yusu...@gmail.com>
wrote:
> Hi,
>
> You can enables the LLDP topology discovery feature, provided by
> "ryu.topology"
> module, to discover switches (and hosts) on your topology.
> https://github.com/osrg/ryu/blob/master/ryu/topology/api.py
> https://github.com/osrg/ryu/blob/master/ryu/topology/event.py
>
> =================
> ...(snip)...
> from ryu.topology import api as topology_api
> from ryu.topology import event as topology_event
>
>
> class MyApp(app_manager.RyuApp):
>
> def my_handler(self, ...):
> ...(snip)...
> switches = topology_api.get_all_switch(self)
> ...(snip)...
>
> @set_ev_cls(topology_event.EventSwitchEnter)
> def _switch_enter_handler(self, ev):
> self.logger.info("switch connected: %s", ev.switch)
> ...(snip)...
> =================
>
> Please note to enable Ryu's topology discovery service, please specify
> "--observe-links" option to "ryu-manager".
>
> $ ryu-manager --help
> ...(snip)...
> --observe-links observe link discovery events.
> ...(snip)...
>
>
> Thanks,
> Iwase
>
>
> On 2018年03月02日 05:13, Myra Sh wrote:
>
>>
>> Hello,
>>
>> I am new to Ryu controller. I have a wireless network with two
>> openvswitch(running on wireless nodes) both of them connected to Ryu.
>>
>> Could you guide me how to enable topology discovery for this
>> wireless network in Ryu?
>>
>> Using other SDN controllers, after connecting Openvswitches to the
>> controller, LLDP messages are exchanged between nodes in the network. Do I
>> need to activate LLDP messages manually in Ryu?
>>
>> Thank you
>>
>>
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>>
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>>
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