lantz
b7c412073a
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 ;-(
64 lines
1.7 KiB
Python
Executable File
64 lines
1.7 KiB
Python
Executable File
#!/usr/bin/python
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"""
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This example creates a multi-controller network from semi-scratch by
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using the net.add*() API and manually starting the switches and controllers.
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This is the "mid-level" API, which is an alternative to the "high-level"
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Topo() API which supports parametrized topology classes.
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Note that one could also create a custom switch class and pass it into
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the Mininet() constructor.
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"""
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from mininet.net import Mininet
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from mininet.node import Controller, OVSSwitch
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from mininet.cli import CLI
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from mininet.log import setLogLevel, info
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def multiControllerNet():
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"Create a network from semi-scratch with multiple controllers."
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net = Mininet( controller=Controller, switch=OVSSwitch,
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waitConnected=True )
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info( "*** Creating (reference) controllers\n" )
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c1 = net.addController( 'c1', port=6633 )
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c2 = net.addController( 'c2', port=6634 )
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info( "*** Creating switches\n" )
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s1 = net.addSwitch( 's1' )
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s2 = net.addSwitch( 's2' )
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info( "*** Creating hosts\n" )
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hosts1 = [ net.addHost( 'h%d' % n ) for n in ( 3, 4 ) ]
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hosts2 = [ net.addHost( 'h%d' % n ) for n in ( 5, 6 ) ]
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info( "*** Creating links\n" )
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for h in hosts1:
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net.addLink( s1, h )
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for h in hosts2:
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net.addLink( s2, h )
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net.addLink( s1, s2 )
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info( "*** Starting network\n" )
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net.build()
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c1.start()
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c2.start()
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s1.start( [ c1 ] )
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s2.start( [ c2 ] )
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info( "*** Testing network\n" )
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net.pingAll()
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info( "*** Running CLI\n" )
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CLI( net )
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info( "*** Stopping network\n" )
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net.stop()
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if __name__ == '__main__':
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setLogLevel( 'info' ) # for CLI output
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multiControllerNet()
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