diff --git a/mininet/test/test_hifi.py b/mininet/test/test_hifi.py
new file mode 100644
index 0000000..ace7bb5
--- /dev/null
+++ b/mininet/test/test_hifi.py
@@ -0,0 +1,127 @@
+#!/usr/bin/env python
+
+"""Package: mininet
+   Test creation and pings for topologies with link and/or CPU options."""
+
+import unittest
+
+from mininet.net import Mininet
+from mininet.node import OVSKernelSwitch
+from mininet.node import CPULimitedHost
+from mininet.link import TCLink
+from mininet.topo import Topo
+from mininet.log import setLogLevel
+
+
+SWITCH = OVSKernelSwitch
+# Number of hosts for each test
+N = 2
+
+
+class SingleSwitchOptionsTopo(Topo):
+    "Single switch connected to n hosts."
+    def __init__(self, n=2, hopts=None, lopts=None):
+        if not hopts:
+            hopts = {}
+        if not lopts:
+            lopts = {}
+        Topo.__init__(self, hopts=hopts, lopts=lopts)
+        switch = self.addSwitch('s1')
+        for h in range(n):
+            host = self.addHost('h%s' % (h + 1))
+            self.addLink(host, switch)
+
+
+class testOptionsTopo( unittest.TestCase ):
+    "Verify ability to create networks with host and link options."
+
+    def runOptionsTopoTest( self, n, hopts=None, lopts=None ):
+        "Generic topology-with-options test runner."
+        mn = Mininet( topo=SingleSwitchOptionsTopo( n=n, hopts=hopts,
+                                                    lopts=lopts ),
+                      host=CPULimitedHost, link=TCLink )
+        dropped = mn.run( mn.ping )
+        self.assertEqual( dropped, 0 )
+
+    def assertWithinTolerance(self, measured, expected, tolerance_frac):
+        """Check that a given value is within a tolerance of expected
+        tolerance_frac: less-than-1.0 value; 0.8 would yield 20% tolerance.
+        """
+        self.assertTrue( float(measured) >= float(expected) * tolerance_frac )
+        self.assertTrue( float(measured) >= float(expected) * tolerance_frac )
+
+    def testCPULimits( self ):
+        "Verify topology creation with CPU limits set for both schedulers."
+        CPU_FRACTION = 0.1
+        CPU_TOLERANCE = 0.8  # CPU fraction below which test should fail
+        hopts = { 'cpu': CPU_FRACTION }
+        #self.runOptionsTopoTest( N, hopts=hopts )
+
+        mn = Mininet( SingleSwitchOptionsTopo( n=N, hopts=hopts ),
+                      host=CPULimitedHost )
+        mn.start()
+        results = mn.runCpuLimitTest( cpu=CPU_FRACTION )
+        mn.stop()
+        for cpu in results:
+            self.assertWithinTolerance( cpu, CPU_FRACTION, CPU_TOLERANCE )
+
+    def testLinkBandwidth( self ):
+        "Verify that link bandwidths are accurate within a bound."
+        BW = 5  # Mbps
+        BW_TOLERANCE = 0.8  # BW fraction below which test should fail
+        # Verify ability to create limited-link topo first;
+        lopts = { 'bw': BW, 'use_htb': True }
+        # Also verify correctness of limit limitng within a bound.
+        mn = Mininet( SingleSwitchOptionsTopo( n=N, lopts=lopts ),
+                      link=TCLink )
+        bw_strs = mn.run( mn.iperf )
+        for bw_str in bw_strs:
+            bw = float( bw_str.split(' ')[0] )
+            self.assertWithinTolerance( bw, BW, BW_TOLERANCE )
+
+    def testLinkDelay( self ):
+        "Verify that link delays are accurate within a bound."
+        DELAY_MS = 15
+        DELAY_TOLERANCE = 0.8  # Delay fraction below which test should fail
+        lopts = { 'delay': '%sms' % DELAY_MS, 'use_htb': True }
+        mn = Mininet( SingleSwitchOptionsTopo( n=N, lopts=lopts ),
+                      link=TCLink )
+        ping_delays = mn.run( mn.pingFull )
+        test_outputs = ping_delays[0]
+        # Ignore unused variables below
+        # pylint: disable-msg=W0612
+        node, dest, ping_outputs = test_outputs
+        sent, received, rttmin, rttavg, rttmax, rttdev = ping_outputs
+        self.assertEqual( sent, received )
+        # pylint: enable-msg=W0612
+        for rttval in [rttmin, rttavg, rttmax]:
+            # Multiply delay by 4 to cover there & back on two links
+            self.assertWithinTolerance( rttval, DELAY_MS * 4.0,
+                                        DELAY_TOLERANCE)
+
+    def testLinkLoss( self ):
+        "Verify that we see packet drops with a high configured loss rate."
+        LOSS_PERCENT = 99
+        REPS = 1
+        lopts = { 'loss': LOSS_PERCENT, 'use_htb': True }
+        mn = Mininet( topo=SingleSwitchOptionsTopo( n=N, lopts=lopts ),
+                      host=CPULimitedHost, link=TCLink )
+        # Drops are probabilistic, but the chance of no dropped packets is
+        # 1 in 100 million with 4 hops for a link w/99% loss.
+        dropped_total = 0
+        mn.start()
+        for _ in range(REPS):
+            dropped_total += mn.ping(timeout='1')
+        mn.stop()
+        self.assertTrue(dropped_total > 0)
+
+    def testMostOptions( self ):
+        "Verify topology creation with most link options and CPU limits."
+        lopts = { 'bw': 10, 'delay': '5ms', 'use_htb': True }
+        hopts = { 'cpu': 0.5 / N }
+        self.runOptionsTopoTest( N, hopts=hopts, lopts=lopts )
+
+
+if __name__ == '__main__':
+    setLogLevel( 'warning' )
+    unittest.main()
diff --git a/mininet/test/test_nets.py b/mininet/test/test_nets.py
new file mode 100644
index 0000000..fde8e87
--- /dev/null
+++ b/mininet/test/test_nets.py
@@ -0,0 +1,50 @@
+#!/usr/bin/env python
+
+"""Package: mininet
+   Test creation and all-pairs ping for each included mininet topo type."""
+
+import unittest
+
+from mininet.net import Mininet
+from mininet.node import Host, Controller
+from mininet.node import UserSwitch, OVSKernelSwitch
+from mininet.topo import SingleSwitchTopo, LinearTopo
+from mininet.log import setLogLevel
+
+SWITCHES = { 'user': UserSwitch,
+             'ovsk': OVSKernelSwitch,
+}
+
+
+class testSingleSwitch( unittest.TestCase ):
+    "For each datapath type, test ping with single switch topologies."
+
+    def testMinimal( self ):
+        "Ping test with both datapaths on minimal topology"
+        for switch in SWITCHES.values():
+            mn = Mininet( SingleSwitchTopo(), switch, Host, Controller )
+            dropped = mn.run( mn.ping )
+            self.assertEqual( dropped, 0 )
+
+    def testSingle5( self ):
+        "Ping test with both datapaths on 5-host single-switch topology"
+        for switch in SWITCHES.values():
+            mn = Mininet( SingleSwitchTopo( k=5 ), switch, Host, Controller )
+            dropped = mn.run( mn.ping )
+            self.assertEqual( dropped, 0 )
+
+
+class testLinear( unittest.TestCase ):
+    "For each datapath type, test all-pairs ping with LinearNet."
+
+    def testLinear5( self ):
+        "Ping test with both datapaths on a 5-switch topology"
+        for switch in SWITCHES.values():
+            mn = Mininet( LinearTopo( k=5 ), switch, Host, Controller )
+            dropped = mn.run( mn.ping )
+            self.assertEqual( dropped, 0 )
+
+
+if __name__ == '__main__':
+    setLogLevel( 'warning' )
+    unittest.main()