Restored scratchnet and scratchnetuser demos.
Also changed the str format for nodes to use str() rather than repr() so we don't end up with extraneous quotes.
This commit is contained in:
Bob Lantz
+26
-26
@@ -11,44 +11,44 @@ import logging
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from mininet.net import init
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from mininet.node import Node
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from mininet.util import createLink
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from mininet.log import info
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# print out info() messages, including cmdPrint
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logging.LOGLEVELDEFAULT = logging.INFO
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from mininet.log import lg, info
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def scratchNet( cname='controller', cargs='ptcp:'):
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# Create Network
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print "*** creating Nodes"
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info( "*** Creating nodes\n" )
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controller = Node( 'c0', inNamespace=False )
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switch = Node( 's0', inNamespace=False )
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h0 = Node( 'h0' )
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h1 = Node( 'h1' )
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print "*** creating links"
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info( "*** Creating links\n" )
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createLink( node1=h0, port1=0, node2=switch, port2=0 )
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createLink( node1=h1, port1=0, node2=switch, port2=1 )
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# Configure hosts
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print "*** configuring hosts"
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info( "*** Configuring hosts\n" )
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h0.setIP( h0.intfs[ 0 ], '192.168.123.1', '/24' )
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h1.setIP( h1.intfs[ 0 ], '192.168.123.2', '/24' )
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print h0
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print h1
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# Start network using kernel datapath
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controller.cmdPrint( cname + ' ' + cargs + '&' )
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switch.cmdPrint( 'dpctl deldp nl:0' )
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switch.cmdPrint( 'dpctl adddp nl:0' )
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info( str( h0 ) + '\n' )
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info( str( h1 ) + '\n' )
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info( "*** Starting network using kernel datapath\n" )
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controller.cmd( cname + ' ' + cargs + '&' )
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switch.cmd( 'dpctl deldp nl:0' )
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switch.cmd( 'dpctl adddp nl:0' )
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for intf in switch.intfs.values():
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switch.cmdPrint( 'dpctl addif nl:0 ' + intf )
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switch.cmdPrint( 'ofprotocol nl:0 tcp:localhost &')
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# Run test
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print h0.cmd( 'ping -c1 ' + h1.IP() )
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# Stop network
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controller.cmdPrint( 'kill %' + cname)
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switch.cmdPrint( 'dpctl deldp nl:0' )
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switch.cmdPrint( 'kill %ofprotocol' )
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switch.stop()
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controller.stop()
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switch.cmd( 'dpctl addif nl:0 ' + intf )
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switch.cmd( 'ofprotocol nl:0 tcp:localhost &')
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info( "*** Running test\n" )
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h0.cmdPrint( 'ping -c1 ' + h1.IP() )
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info( "*** Stopping network\n" )
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controller.cmd( 'kill %' + cname)
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switch.cmd( 'dpctl deldp nl:0' )
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switch.cmd( 'kill %ofprotocol' )
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if __name__ == '__main__':
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info( '*** Scratch network demo\n' )
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info( '*** Scratch network demo (kernel datapath)\n' )
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init()
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lg.setLogLevel( 'info' )
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scratchNet()
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+49
-33
@@ -8,40 +8,56 @@ but it exposes the configuration details and allows customization.
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This version uses the user datapath.
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"""
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from mininet.mininet import init, Node, createLink
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from mininet.net import init
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from mininet.node import Node
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from mininet.util import createLink
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from mininet.log import lg, info
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def scratchNetUser( cname='controller', cargs='ptcp:'):
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# Create Network
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# It's not strictly necessary for the controller and switches
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# to be in separate namespaces. For performance, they probably
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# should be in the root namespace. However, it's interesting to
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# see how they could work even if they are in separate namespaces.
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controller = Node( 'c0' )
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switch = Node( 's0')
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h0 = Node( 'h0' )
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h1 = Node( 'h1' )
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createLink( controller, switch )
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createLink( h0, switch )
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createLink( h1, switch )
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# Configure control network
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controller.setIP( controller.intfs[ 0 ], '10.0.123.1', '/24' )
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switch.setIP( switch.intfs[ 0 ], '10.0.123.2', '/24' )
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# Configure hosts
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h0.setIP( h0.intfs[ 0 ], '192.168.123.1', '/24' )
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h1.setIP( h1.intfs[ 0 ], '192.168.123.2', '/24' )
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# Start network using user datapath
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controller.cmdPrint( cname + ' ' + cargs + '&' )
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switch.cmdPrint( 'ifconfig lo 127.0.0.1' )
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switch.cmdPrint( 'ofdatapath -i ' + ','.join( switch.intfs[ 1: ])
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+ ' ptcp: &' )
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switch.cmdPrint( 'ofprotocol tcp:' + controller.IP() + ' tcp:localhost &' )
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# Run test
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h0.cmdPrint( 'ping -c1 ' + h1.IP() )
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# Stop network
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controller.cmdPrint( 'kill %' + cname)
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switch.cmdPrint( 'kill %ofdatapath' )
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switch.cmdPrint( 'kill %ofprotocol' )
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# Create Network
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# It's not strictly necessary for the controller and switches
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# to be in separate namespaces. For performance, they probably
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# should be in the root namespace. However, it's interesting to
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# see how they could work even if they are in separate namespaces.
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info( '*** Creating Network\n' )
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controller = Node( 'c0' )
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switch = Node( 's0')
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h0 = Node( 'h0' )
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h1 = Node( 'h1' )
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createLink( controller, 0, switch, 0 )
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createLink( h0, 0, switch, 1 )
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createLink( h1, 0, switch, 2 )
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info( '*** Configuring control network\n' )
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controller.setIP( controller.intfs[ 0 ], '10.0.123.1', '/24' )
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switch.setIP( switch.intfs[ 0 ], '10.0.123.2', '/24' )
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info( '*** Configuring hosts\n' )
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h0.setIP( h0.intfs[ 0 ], '192.168.123.1', '/24' )
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h1.setIP( h1.intfs[ 0 ], '192.168.123.2', '/24' )
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info( '*** Network state:\n' )
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for node in controller, switch, h0, h1:
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info( str( node ) + '\n' )
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info( '*** Starting controller and user datapath\n' )
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controller.cmd( cname + ' ' + cargs + '&' )
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switch.cmd( 'ifconfig lo 127.0.0.1' )
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intfs = [ switch.intfs[ port ] for port in (1, 2) ]
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switch.cmd( 'ofdatapath -i ' + ','.join( intfs ) + ' ptcp: &' )
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switch.cmd( 'ofprotocol tcp:' + controller.IP() + ' tcp:localhost &' )
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info( '*** Running test\n' )
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h0.cmdPrint( 'ping -c1 ' + h1.IP() )
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info( '*** Stopping network\n' )
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controller.cmd( 'kill %' + cname )
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switch.cmd( 'kill %ofdatapath' )
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switch.cmd( 'kill %ofprotocol' )
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if __name__ == '__main__':
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init()
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scratchNetUser()
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info( '*** Scratch network demo (user datapath)\n' )
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init()
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lg.setLogLevel( 'info' )
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scratchNetUser()
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+4
-4
@@ -54,7 +54,7 @@ class Node( object ):
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def __init__( self, name, inNamespace=True ):
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self.name = name
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closeFds = False # speed vs. memory use
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# xpgEcho is needed so we can echo our sentinel in sendCmd
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# xpg_echo is needed so we can echo our sentinel in sendCmd
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cmd = [ '/bin/bash', '-O', 'xpg_echo' ]
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self.inNamespace = inNamespace
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if self.inNamespace:
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@@ -170,7 +170,7 @@ class Node( object ):
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"""Send a command, wait for output, and return it.
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cmd: string"""
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log = info if verbose else debug
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log( '*** %s : %s', self.name, cmd )
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log( '*** %s : %s\n' % ( self.name, cmd ) )
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self.sendCmd( cmd )
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return self.waitOutput( verbose )
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@@ -261,9 +261,9 @@ class Node( object ):
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# Other methods
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def __str__( self ):
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result = self.name + ':'
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result += ' IP=' + repr( self.IP() )
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result += ' IP=' + str( self.IP() )
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result += ' intfs=' + ','.join( sorted( self.intfs.values() ) )
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result += ' waiting=' + repr( self.waiting )
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result += ' waiting=' + str( self.waiting )
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return result
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