82 lines
2.3 KiB
Python
Executable File
82 lines
2.3 KiB
Python
Executable File
#!/usr/bin/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 __future__ import print_function
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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 )
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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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print( '\n' )
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# test the network with pingall
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net.pingAll()
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print( '\n' )
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info( '*** Stopping network' )
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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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