adding example to test functionality of port numbering

examples/numberedports.py

+#!/usr/bin/python
+
+"""
+Create a network with 5 hosts, numbered 1-4 and 9. 
+"""
+
+from mininet.net import Mininet
+from mininet.node import Controller
+from mininet.cli import CLI
+from mininet.log import setLogLevel, info
+#from mininet.topo import Topo
+from mininet.node import Node
+
+def validatePort( self, intf ):
+    "Validate intf's OF port number"
+    ofport = int( self.cmd( 'ovs-vsctl get Interface', intf,
+                          'ofport' ) )
+    if ofport != self.ports[ intf ]:
+        warn( 'WARNING: ofport for', intf, 'is actually', ofport,
+              '\n' )
+        return 0
+    else:
+        return 1
+
+def net():
+
+    "Create a network with 5 hosts."
+
+    net = Mininet( controller=Controller )
+
+    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' )
+    h3 = net.addHost( 'h3', ip='10.0.0.3' )
+    h4 = net.addHost( 'h4', ip='10.0.0.4' )
+    h5 = net.addHost( 'h5', ip='10.0.0.5' )
+
+    info( '*** Adding switch\n' )
+    s1 = net.addSwitch( 's1' )
+
+    info( '*** Creating links\n' )
+    net.addLink( h1, s1 )
+    net.addLink( h2, s1 )
+    net.addLink( h3, s1 )
+    net.addLink( h4, s1 )
+    net.addLink( h5, s1, port1 = 1, port2 = 9 )
+
+    root = Node( 'root', inNamespace=False )
+    info( '*** Starting network\n' )
+    net.start()
+    #info( s1.intfs, "\n" )
+    # print the interfaces, their port numbers, and the port requests
+    info( '\n*** printing and validating the ports running on each interface\n' )
+    for intfs in s1.intfList():
+        if not intfs.name == "lo":
+            info( intfs, ': ', root.cmd( 'ovs-vsctl get Interface', intfs, 'ofport' ) )
+            info ( 'Validating ', intfs, '... ' )
+            if validatePort( s1, intfs ):
+                info( 'Validated.\n' )
+    print '\n'
+        
+    #info( root.cmd( 'ovs-vsctl list interface | grep -A 2 s1 ' ) )
+    net.pingAll()
+    print '\n'
+
+    info( '*** Stopping network' )
+    net.stop()
+
+if __name__ == '__main__':
+    setLogLevel( 'info' )
+    net()
+