69 lines
2.1 KiB
Python
69 lines
2.1 KiB
Python
#!/usr/bin/python
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#
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# run iperf to measure the effective throughput between two nodes when
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# n nodes are connected to a virtual wlan; run test for testsec
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# and repeat for minnodes <= n <= maxnodes with a step size of
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# nodestep
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import datetime
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import logging
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import parser
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from builtins import range
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from core.emulator.coreemu import CoreEmu
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from core.emulator.emudata import IpPrefixes
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from core.emulator.enumerations import EventTypes, NodeTypes
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def example(options):
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# ip generator for example
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prefixes = IpPrefixes(ip4_prefix="10.83.0.0/16")
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# create emulator instance for creating sessions and utility methods
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coreemu = CoreEmu()
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session = coreemu.create_session()
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# must be in configuration state for nodes to start, when using "node_add" below
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session.set_state(EventTypes.CONFIGURATION_STATE)
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# create switch network node
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switch = session.add_node(_type=NodeTypes.SWITCH)
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# create nodes
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for _ in range(options.nodes):
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node = session.add_node()
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interface = prefixes.create_interface(node)
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session.add_link(node.id, switch.id, interface_one=interface)
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# instantiate session
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session.instantiate()
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# get nodes to run example
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first_node = session.get_node(2)
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last_node = session.get_node(options.nodes + 1)
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print("starting iperf server on node: %s" % first_node.name)
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first_node.node_net_cmd("iperf -s -D")
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first_node_address = prefixes.ip4_address(first_node)
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print("node %s connecting to %s" % (last_node.name, first_node_address))
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output = last_node.node_net_cmd(
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"iperf -t %s -c %s" % (options.time, first_node_address)
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)
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print(output)
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first_node.node_net_cmd("killall -9 iperf")
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# shutdown session
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coreemu.shutdown()
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def main():
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logging.basicConfig(level=logging.INFO)
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options = parser.parse_options("switch")
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start = datetime.datetime.now()
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print("running switch example: nodes(%s) time(%s)" % (options.nodes, options.time))
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example(options)
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print("elapsed time: %s" % (datetime.datetime.now() - start))
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if __name__ == "__main__":
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main()
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