lantz
f0c726a42f
This helps with virtualenv although it can open up another security hole if you end up using an unexpected python interpreter. Overall it seems to make sense to err on the side of usability but it's good to be aware of security. However, for the remaining utility scripts that require python 2, we explicitly note this with #!/usr/bin/python2.
82 lines
2.3 KiB
Python
Executable File
82 lines
2.3 KiB
Python
Executable File
#!/usr/bin/env python
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"""
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Create a network with 5 hosts, numbered 1-4 and 9.
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Validate that the port numbers match to the interface name,
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and that the ovs ports match the mininet ports.
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"""
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from mininet.net import Mininet
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from mininet.node import Controller
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from mininet.log import setLogLevel, info, warn
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def validatePort( switch, intf ):
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"Validate intf's OF port number"
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ofport = int( switch.cmd( 'ovs-vsctl get Interface', intf,
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'ofport' ) )
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if ofport != switch.ports[ intf ]:
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warn( 'WARNING: ofport for', intf, 'is actually', ofport, '\n' )
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return 0
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else:
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return 1
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def testPortNumbering():
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"""Test port numbering:
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Create a network with 5 hosts (using Mininet's
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mid-level API) and check that implicit and
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explicit port numbering works as expected."""
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net = Mininet( controller=Controller, waitConnected=True )
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info( '*** Adding controller\n' )
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net.addController( 'c0' )
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info( '*** Adding hosts\n' )
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h1 = net.addHost( 'h1', ip='10.0.0.1' )
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h2 = net.addHost( 'h2', ip='10.0.0.2' )
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h3 = net.addHost( 'h3', ip='10.0.0.3' )
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h4 = net.addHost( 'h4', ip='10.0.0.4' )
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h5 = net.addHost( 'h5', ip='10.0.0.5' )
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info( '*** Adding switch\n' )
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s1 = net.addSwitch( 's1' )
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info( '*** Creating links\n' )
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# host 1-4 connect to ports 1-4 on the switch
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net.addLink( h1, s1 )
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net.addLink( h2, s1 )
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net.addLink( h3, s1 )
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net.addLink( h4, s1 )
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# specify a different port to connect host 5 to on the switch.
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net.addLink( h5, s1, port1=1, port2= 9)
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info( '*** Starting network\n' )
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net.start()
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# print the interfaces and their port numbers
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info( '\n*** printing and validating the ports '
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'running on each interface\n' )
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for intfs in s1.intfList():
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if not intfs.name == "lo":
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info( intfs, ': ', s1.ports[intfs],
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'\n' )
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info( 'Validating that', intfs,
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'is actually on port', s1.ports[intfs], '... ' )
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if validatePort( s1, intfs ):
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info( 'Validated.\n' )
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info( '\n' )
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# test the network with pingall
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net.pingAll()
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info( '\n' )
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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' )
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testPortNumbering()
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