Hi Arslan,
Sorry, the script on Ryu-Book does not create the topology correctly...
(Some options seems to be missing.)
Could you try the following script?
==== qos_sample_topology.py ====
#!/usr/bin/env python
from mininet.cli import CLI
from mininet.net import Mininet
from mininet.node import UserSwitch
from mininet.node import RemoteController
from mininet.link import TCLink
from mininet.log import setLogLevel
def main():
net = Mininet(controller=RemoteController, switch=UserSwitch, link=TCLink)
net.addController('c0')
s1 = net.addSwitch('s1', dpopts='')
s2 = net.addSwitch('s2', dpopts='')
s3 = net.addSwitch('s3', dpopts='')
h1 = net.addHost('h1')
h2 = net.addHost('h2')
h3 = net.addHost('h3')
net.addLink(s1, h1, bw=1)
net.addLink(s2, h2, bw=1)
net.addLink(s3, h3, bw=1)
net.addLink(s1, s2, bw=1)
net.addLink(s1, s3, bw=1)
net.start()
s1.cmdPrint('dpctl unix:/tmp/s1 queue-mod 1 1 80')
s1.cmdPrint('dpctl unix:/tmp/s1 queue-mod 1 2 120')
s1.cmdPrint('dpctl unix:/tmp/s1 queue-mod 1 3 800')
CLI(net)
net.stop()
if '__main__' == __name__:
setLogLevel('info')
main()
================================
With the above script, the modifications of ofsoftswitch13's source codes
(described on Ryu-Book)
are not needed.
Thanks,
Iwase
On 2017年10月24日 18:28, Arslan wrote:
Dear All,
I almost followed the same procedure as explained in the Ryu book for Example of the operation of
QoS by using Meter Table but I made a little modification in the mininet topology file where I added
the controller address. However, the controller is not joining the switch. I am attaching the screen
shot of the controller terminal and mininet topology file here.
I wonder what is the possible reason for it and how it can be solved. Thanks
Regards
Arslan
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