Bob Lantz
ee15ce2243
Although we could use print() from __future__, this messes up scripts which use examples as modules. The simple, if not nicest for 2.7, solution is to use info(), output() and other mininet.log functions. The disadvantage is that we may have to adjust things if we change info() to add automatic newlines, but we can burn that bridge in Mininet 3.x.
81 lines
2.3 KiB
Python
Executable File
81 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 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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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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