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mytopo.py
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mytopo.py
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#coding=utf-8
"""
My custom topology
根据Mininet wiki中Router Exercise部分中的拓扑图创建拓扑。
此为定制拓扑文件,使用方法参见Mininet的--custom与--topo属性
"""
from mininet.topo import Topo
class MyTopo( Topo ):
"Simple topology example."
def __init__( self ):
"Create custom topo."
# Initialize topology
Topo.__init__( self )
# Add hosts and switches
host1_1 = self.addHost( 'h1_1', ip = "10.0.1.101/24", defaultRoute = "via 10.0.1.1" )
host1_2 = self.addHost( 'h1_2', ip = "10.0.1.102/24", defaultRoute = "via 10.0.1.1" )
host1_3 = self.addHost( 'h1_3', ip = "10.0.1.103/24", defaultRoute = "via 10.0.1.1" )
host2 = self.addHost( 'h2', ip = "10.0.2.100/24", defaultRoute = "via 10.0.2.1" )
host3 = self.addHost( 'h3', ip = "10.0.3.100/24", defaultRoute = "via 10.0.3.1" )
router1 = self.addSwitch( 'r1' )
switch2 = self.addSwitch( 's2' )
# Add links
self.addLink( host1_1, switch2 )
self.addLink( host1_2, switch2 )
self.addLink( host1_3, switch2 )
# Add links
self.addLink( switch2, router1 )
self.addLink( host2, router1 )
self.addLink( host3, router1 )
topos = { 'mytopo': ( lambda: MyTopo() ) }