intfoptions and test adjustments (#992)

* 2.3.0a1

* intfoptions and test_intfoptions tweaks

also added cleanup() to test_walkthrough fixture

examples/intfoptions.py

@@ -25,10 +25,10 @@ def intfOptions():
     # flush out latency from reactive forwarding delay
     net.pingAll()
 
-    info( '\n*** Configuring one intf with bandwidth of 5 Mb\n' )
-    link1.intf1.config( bw=5 )
+    info( '\n*** Configuring one intf with bandwidth of 10 Mb\n' )
+    link1.intf1.config( bw=10 )
     info( '\n*** Running iperf to test\n' )
-    net.iperf()
+    net.iperf( seconds=10 )
 
     info( '\n*** Configuring one intf with loss of 50%\n' )
     link1.intf1.config( loss=50 )

examples/test/test_intfoptions.py

@@ -22,7 +22,7 @@ class testIntfOptions( unittest.TestCase ):
         while True:
             index = p.expect( opts, timeout=600 )
             if index == 0:
-                BW = 5
+                BW = 10
                 bw = float( p.match.group( 1 ) )
                 self.assertGreaterEqual( bw, BW * ( 1 - tolerance ) )
                 self.assertLessEqual( bw, BW * ( 1 + tolerance ) )