Bob Lantz
dc630c540a
Also changed the str format for nodes to use str() rather than repr() so we don't end up with extraneous quotes.
55 lines
1.6 KiB
Python
Executable File
55 lines
1.6 KiB
Python
Executable File
#!/usr/bin/python
|
|
|
|
"""
|
|
Build a simple network from scratch, using mininet primitives.
|
|
This is more complicated than using the higher-level classes,
|
|
but it exposes the configuration details and allows customization.
|
|
"""
|
|
|
|
import logging
|
|
|
|
from mininet.net import init
|
|
from mininet.node import Node
|
|
from mininet.util import createLink
|
|
from mininet.log import lg, info
|
|
|
|
def scratchNet( cname='controller', cargs='ptcp:'):
|
|
|
|
info( "*** Creating nodes\n" )
|
|
controller = Node( 'c0', inNamespace=False )
|
|
switch = Node( 's0', inNamespace=False )
|
|
h0 = Node( 'h0' )
|
|
h1 = Node( 'h1' )
|
|
|
|
info( "*** Creating links\n" )
|
|
createLink( node1=h0, port1=0, node2=switch, port2=0 )
|
|
createLink( node1=h1, port1=0, node2=switch, port2=1 )
|
|
|
|
info( "*** Configuring hosts\n" )
|
|
h0.setIP( h0.intfs[ 0 ], '192.168.123.1', '/24' )
|
|
h1.setIP( h1.intfs[ 0 ], '192.168.123.2', '/24' )
|
|
info( str( h0 ) + '\n' )
|
|
info( str( h1 ) + '\n' )
|
|
|
|
info( "*** Starting network using kernel datapath\n" )
|
|
controller.cmd( cname + ' ' + cargs + '&' )
|
|
switch.cmd( 'dpctl deldp nl:0' )
|
|
switch.cmd( 'dpctl adddp nl:0' )
|
|
for intf in switch.intfs.values():
|
|
switch.cmd( 'dpctl addif nl:0 ' + intf )
|
|
switch.cmd( 'ofprotocol nl:0 tcp:localhost &')
|
|
|
|
info( "*** Running test\n" )
|
|
h0.cmdPrint( 'ping -c1 ' + h1.IP() )
|
|
|
|
info( "*** Stopping network\n" )
|
|
controller.cmd( 'kill %' + cname)
|
|
switch.cmd( 'dpctl deldp nl:0' )
|
|
switch.cmd( 'kill %ofprotocol' )
|
|
|
|
if __name__ == '__main__':
|
|
info( '*** Scratch network demo (kernel datapath)\n' )
|
|
init()
|
|
lg.setLogLevel( 'info' )
|
|
scratchNet()
|