Tom Tofigh | fad498b | 2014-10-29 12:06:24 -0700 | [diff] [blame] | 1 | #!/usr/bin/env python |
| 2 | |
| 3 | ''' file: custom/optical.py ''' |
| 4 | |
| 5 | from mininet.topo import Topo |
| 6 | from mininet.net import Mininet |
| 7 | from mininet.cli import CLI |
| 8 | from mininet.log import setLogLevel, info |
| 9 | from mininet.util import irange |
| 10 | |
| 11 | class OpticalTopo( Topo ): |
| 12 | |
| 13 | def build( self, n=3, tapStart=3 ): |
| 14 | |
| 15 | # Add hosts and switches |
| 16 | hosts = [] |
| 17 | switches = [] |
| 18 | for i in irange( 1, n ): |
| 19 | h = self.addHost( 'h%d' % i ) |
| 20 | s = self.addSwitch( 's%d' % i ) |
| 21 | self.addLink( h, s ) |
| 22 | hosts.append( h ) |
| 23 | switches.append( s ) |
| 24 | |
| 25 | # Add optical tap interfaces |
| 26 | tapNum = tapStart |
| 27 | for sw in switches: |
| 28 | self.addLink( sw, sw, intfName1='%s-eth0' % sw, intfName2='tap%d' % tapNum ) |
| 29 | tapNum += 1 |
| 30 | |
| 31 | # if you use, sudo mn --custom custom/optical.py, then register the topo: |
| 32 | #sudo mn --custom optical-topo.py --topo optical,5 |
| 33 | topos = { 'optical': OpticalTopo } |
| 34 | |
| 35 | def installStaticFlows( net ): |
| 36 | for swName in [ 's1', 's2', 's3', 's4', 's5', 's6' ]: |
| 37 | info( 'Adding flows to %s...' % swName ) |
| 38 | sw = net[ swName ] |
| 39 | sw.dpctl( 'add-flow', 'in_port=1,actions=output=2' ) |
| 40 | sw.dpctl( 'add-flow', 'in_port=2,actions=output=1' ) |
| 41 | info( sw.dpctl( 'dump-flows' ) ) |
| 42 | |
| 43 | def run(): |
| 44 | net = Mininet( topo=OpticalTopo() ) |
| 45 | net.start() |
| 46 | #installStaticFlows( net ) |
| 47 | CLI( net ) |
| 48 | net.stop() |
| 49 | |
| 50 | # if the script is run directly (sudo custom/optical.py): |
| 51 | if __name__ == '__main__': |
| 52 | setLogLevel( 'info' ) |
| 53 | run() |