47 lines
1.2 KiB
Python
47 lines
1.2 KiB
Python
"""Custom topology example
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author: Brandon Heller (brandonh@stanford.edu)
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Two directly connected switches plus a host for each switch:
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host --- switch --- switch --- host
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Adding the 'topos' dict with a key/value pair to generate our newly defined
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topology enables one to pass in '--topo=mytopo' from the command line.
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"""
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from mininet.topo import Topo
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from mininet.node import Node
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class MyTopo( Topo ):
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"Simple topology example."
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def __init__( self, enable_all = True ):
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"Create custom topo."
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# Add default members to class.
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super( MyTopo, self ).__init__()
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# Set Node IDs for hosts and switches
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leftHost = 1
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leftSwitch = 2
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rightSwitch = 3
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rightHost = 4
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# Add nodes
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self.addNode( leftSwitch, Node( isSwitch=True ) )
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self.addNode( rightSwitch, Node( isSwitch=True ) )
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self.addNode( leftHost, Node( isSwitch=False ) )
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self.addNode( rightHost, Node( isSwitch=False ) )
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# Add edges
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self.add_edge( leftHost, leftSwitch )
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self.add_edge( leftSwitch, rightSwitch )
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self.add_edge( rightSwitch, rightHost )
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# Consider all switches and hosts 'on'
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self.enable_all()
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topos = { 'mytopo': ( lambda: MyTopo() ) }
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