On Tue, 1 Jul 2014 02:35:24 +0200
"Yashas V Bharadwaj" <[email protected]> wrote:
> I am unable to observe links of all the switches. Following are the steps
> which I have performed.
>
>
>
> 1. Start RYU-Manager with observe-links option.
>
> ./bin/ryu-manager --observe-links /home/ubuntu/PycharmProjects/XSDM/XSDMY.py
>
>
>
> 2. Start mininet with the below topology
>
> sudo mn --topo=tree,3 --controller=remote --switch=ovsk,protocols=OpenFlow13
>
>
>
> ubuntu@sdnhubvm:~[16:47]$ sudo mn --topo=tree,3 --controller=remote
> --switch=ovsk,protocols=OpenFlow13
>
> *** Creating network
>
> *** Adding controller
>
> *** Adding hosts:
>
> h1 h2 h3 h4 h5 h6 h7 h8
>
> *** Adding switches:
>
> s1 s2 s3 s4 s5 s6 s7
>
> *** Adding links:
>
> (h1, s3) (h2, s3) (h3, s4) (h4, s4) (h5, s6) (h6, s6) (h7, s7) (h8, s7) (s1,
> s2) (s1, s5) (s2, s3) (s2, s4) (s5, s6) (s5, s7)
I've attached an example code that I can get 12 links with your
topology properly:
$ ryu-manager --observe-links show_links_13.py
=
from ryu.base import app_manager
from ryu.controller import ofp_event
from ryu.controller.handler import CONFIG_DISPATCHER, MAIN_DISPATCHER
from ryu.controller.handler import set_ev_cls
from ryu.ofproto import ofproto_v1_3
from ryu.topology import api
from ryu.lib import hub
import eventlet
class SimpleSwitch13(app_manager.RyuApp):
OFP_VERSIONS = [ofproto_v1_3.OFP_VERSION]
def __init__(self, *args, **kwargs):
super(SimpleSwitch13, self).__init__(*args, **kwargs)
hub.spawn(self.world)
def world(self):
while True:
print [link.to_dict() for link in api.get_all_link(self).iterkeys()]
eventlet.sleep(10)
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