Files
mininet/examples/emptynet.py
T
lantz b7c412073a CI matrix build + 20.04 fixes (#990)
Ubuntu 20.04 fixes:
- fixes sshd test
- speeds up examples/{treeping64,tree1024}.py
- debugging hacks/output for testLinkChange
- removes cfs from examples/popen.py
- improves nat in nodelib (netplan fixes?)
- makes some tests executable
- waits for switches to connect in tests to
  avoid race conditions
-- adds mn -w option and wait CLI command
Changes:
- REMOVES default "-v" argument for Controller()
  and adds verbose(=False) option; avoiding logging
  makes it faster
- CHANGES waitConnected to wait for 5 seconds
  as documented; we may wish to implement an argument
  to -w to set this timeout
Issues?
- There may still be an issue with the ovs-netplan-clean
  service causing the boot to hang ;-(
2021-01-03 20:00:33 -08:00

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Python
Executable File

#!/usr/bin/python
"""
This example shows how to create an empty Mininet object
(without a topology object) and add nodes to it manually.
"""
from mininet.net import Mininet
from mininet.node import Controller
from mininet.cli import CLI
from mininet.log import setLogLevel, info
def emptyNet():
"Create an empty network and add nodes to it."
net = Mininet( controller=Controller, waitConnected=True )
info( '*** Adding controller\n' )
net.addController( 'c0' )
info( '*** Adding hosts\n' )
h1 = net.addHost( 'h1', ip='10.0.0.1' )
h2 = net.addHost( 'h2', ip='10.0.0.2' )
info( '*** Adding switch\n' )
s3 = net.addSwitch( 's3' )
info( '*** Creating links\n' )
net.addLink( h1, s3 )
net.addLink( h2, s3 )
info( '*** Starting network\n')
net.start()
info( '*** Running CLI\n' )
CLI( net )
info( '*** Stopping network' )
net.stop()
if __name__ == '__main__':
setLogLevel( 'info' )
emptyNet()