Hi,
I've created a topology including three UserSwitch (Reference Switches) and
assigned a bandwidth of 500 Mb/s, but when i'm using iperf to check the
bandwidth, it shows 385 kb/s only.
So can anyone help me out here with this.
And when i'm using the OVSSwitch, with iperf it shows the bandwidth of 392
Mb/s.
My n/w topology is as given below:-
#!/usr/bin/env python
from mininet.net import Mininet
from mininet.node import RemoteController,UserSwitch
from mininet.link import TCLink
from mininet.cli import CLI
from mininet.util import quietRun
from mininet.log import setLogLevel, info
net = Mininet(link=TCLink,listenPort=6634);
# Add hosts and switches
Host1 = net.addHost('h1')
Host2 = net.addHost('h2')
Host3 = net.addHost('h3')
Switch1 = net.addSwitch('s1',cls=UserSwitch)
Switch2 = net.addSwitch('s2',cls=UserSwitch)
Switch3 = net.addSwitch('s3',cls=UserSwitch)
linkopts = dict(bw=500)
net.addLink(Host1, Switch1, **linkopts )
net.addLink(Switch1, Switch2, **linkopts )
net.addLink(Switch2, Switch3, **linkopts )
net.addLink(Host2, Switch2, **linkopts )
net.addLink(Host3, Switch3, **linkopts )
net.addController('c1')
net.build()
net.start()
# CLI
CLI( net )
# Clean up
net.stop()
The results of command iperf h1 h3 is 385 kb/s
where the expected result should have been around 490 Mb/s
Kindly let me know, is there anything wrong with the code or it's just that
the bandwidth parameter doesn't work with UserSwitch.
Thanks & Regards,
--
Sumit Paliwal
M.Tech. ICT,
IIT Jodhpur
*"Have a great Day... "*
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