The problem I'm trying to solve is that we have scripted (quite possibly erroneously) a controller that should have the IP 10.0.2.2 but the controller keeps getting set to 127.0.0.1. If I do an ovs-vsctl show to bring up the bridge interfaces for OVS/Mininet, the controller is set to 127.0.0.1. This behaviour is unexpected as we have written a script for it to be 10.0.2.2 So for now, I have to use the command ovs-vsctl set-controller bridge tcp:10.0.2.2:6633. The controller is not connected but the entry should be persistent in the OVSDB database if I'm right?
On Wed, Aug 7, 2013 at 6:50 PM, <w...@ateneo.edu> wrote: > Can you check if the controller is running? Also the error says 127.0.0.1 > and not 10.0.2.2. Is that a typo? > > Sent on the move. > *From: *Dmita Levy > *Sent: *Thursday, August 8, 2013 6:43 AM > *To: *w...@ateneo.edu > *Subject: *Re: [mininet-discuss] Problems Changing Controller in OpenFlow > Tutorial > > Sorry, that's an error in typing. The controller port is indeed 6633 but > we'd like it to be something along the lines of 10.x.x.x:6633 and not keep > trying to use the loopback interface of 127.0.0.1:6633 > > Thanks Always! > Dmita > > On Wed, Aug 7, 2013 at 6:41 PM, <w...@ateneo.edu> wrote: > >> Check controller port. Is it 663 or 6633? Is it running? >> >> Sent on the move. >> *From: *Dmita Levy >> *Sent: *Thursday, August 8, 2013 3:21 AM >> *To: *mininet-disc...@lists.stanford.edu >> *Cc: *Omair Fatmi >> *Subject: *[mininet-discuss] Problems Changing Controller in OpenFlow >> Tutorial >> >> Hello, >> >> I am running the following script to create a custom topology in the >> OpenFlow mininet environment. The script runs as it should but I get the >> error message >> >> Unable to contact the remote controller at 127.0.0.1:663 >> Unable to contact the remote controller at 127.0.0.1:663 >> Unable to contact the remote controller at 127.0.0.1:663 >> >> but the switches are created fine. Am I scripting this correctly? >> >> #!/usr/bin/python >> >> from mininet.net import Mininet >> from mininet.node import OVSKernelSwitch, RemoteController >> from mininet.cli import CLI >> from mininet.log import setLogLevel >> >> def addHost(net, N): >> name= 'h%d' % N >> ip = '10.0.0.%d' % N >> mac = '00:00:00:00:00:%02d' % N >> return net.addHost(name, ip=ip, mac=mac) >> >> >> >> def MultiControllerNet(c1ip = '10.0.2.2', c2ip = '10.0.2.2', c3ip = >> '10.0.2.2'): >> net = Mininet(controller=RemoteController, switch=OVSKernelSwitch, >> autoSetMacs=True) >> print "Creating controllers" >> c1 = net.addController(name = 'Floodlight1', controller = >> RemoteController, defaultIP=c1ip, port=6633) >> c2 = net.addController(name = 'Floodlight2', controller = >> RemoteController, defaultIP=c2ip, port=6633) >> c3 = net.addController(name = 'Floodlight3', controller = >> RemoteController, defaultIP=c3ip, port=6633) >> >> print "*** Creating switches" >> s1 = net.addSwitch( 's1' ) >> s2 = net.addSwitch( 's2' ) >> s3 = net.addSwitch( 's3' ) >> s4 = net.addSwitch( 's4' ) >> s5 = net.addSwitch( 's5' ) >> s6 = net.addSwitch( 's6' ) >> s7 = net.addSwitch( 's7' ) >> s8 = net.addSwitch( 's8' ) >> s9 = net.addSwitch( 's9' ) >> s10 = net.addSwitch( 's10' ) >> s11 = net.addSwitch( 's11' ) >> s12 = net.addSwitch( 's12' ) >> s13 = net.addSwitch( 's13' ) >> s14 = net.addSwitch( 's14' ) >> s15 = net.addSwitch( 's15' ) >> s16 = net.addSwitch( 's16' ) >> s17 = net.addSwitch( 's17' ) >> s18 = net.addSwitch( 's18' ) >> s19 = net.addSwitch( 's19' ) >> s20 = net.addSwitch( 's20' ) >> s21 = net.addSwitch( 's21' ) >> s22 = net.addSwitch( 's22' ) >> s23 = net.addSwitch( 's23' ) >> s24 = net.addSwitch( 's24' ) >> s25 = net.addSwitch( 's25' ) >> s26 = net.addSwitch( 's26' ) >> s27 = net.addSwitch( 's27' ) >> s28 = net.addSwitch( 's28' ) >> s29 = net.addSwitch( 's29' ) >> s30 = net.addSwitch( 's30' ) >> s31 = net.addSwitch( 's31' ) >> s32 = net.addSwitch( 's32' ) >> s33 = net.addSwitch( 's33' ) >> s34 = net.addSwitch( 's34' ) >> s35 = net.addSwitch( 's35' ) >> s36 = net.addSwitch( 's36' ) >> >> print "*** Creating hosts" >> hosts1 = [ addHost( net, n ) for n in 1, 2 ] >> hosts2 = [ addHost( net, n ) for n in 3, 4 ] >> hosts3 = [ addHost( net, n ) for n in 5, 6 ] >> hosts4 = [ addHost( net, n ) for n in 7, 8 ] >> hosts5 = [ addHost( net, n ) for n in 9, 10 ] >> hosts6 = [ addHost( net, n ) for n in 11, 12 ] >> hosts7 = [ addHost( net, n ) for n in 13, 14 ] >> hosts8 = [ addHost( net, n ) for n in 15, 16 ] >> hosts9 = [ addHost( net, n ) for n in 17, 18 ] >> hosts10 = [ addHost( net, n ) for n in 19, 20 ] >> hosts11 = [ addHost( net, n ) for n in 21, 22 ] >> hosts12 = [ addHost( net, n ) for n in 23, 24 ] >> hosts13 = [ addHost( net, n ) for n in 25, 26 ] >> hosts14 = [ addHost( net, n ) for n in 27, 28 ] >> hosts15 = [ addHost( net, n ) for n in 29, 30 ] >> hosts16 = [ addHost( net, n ) for n in 31, 32 ] >> >> print "*** Creating links" >> for h in hosts1: >> s21.linkTo( h ) >> for h in hosts2: >> s22.linkTo( h ) >> for h in hosts3: >> s23.linkTo( h ) >> for h in hosts4: >> s24.linkTo( h ) >> for h in hosts5: >> s25.linkTo( h ) >> for h in hosts6: >> s26.linkTo( h ) >> for h in hosts7: >> s27.linkTo( h ) >> for h in hosts8: >> s28.linkTo( h ) >> for h in hosts9: >> s29.linkTo( h ) >> for h in hosts10: >> s30.linkTo( h ) >> for h in hosts11: >> s31.linkTo( h ) >> for h in hosts12: >> s32.linkTo( h ) >> for h in hosts13: >> s33.linkTo( h ) >> for h in hosts14: >> s34.linkTo( h ) >> for h in hosts15: >> s35.linkTo( h ) >> for h in hosts16: >> s36.linkTo( h ) >> >> s1.linkTo( s4 ) >> s2.linkTo( s3 ) >> s1.linkTo( s3 ) >> s2.linkTo( s4 ) >> s1.linkTo( s17 ) >> s1.linkTo( s18 ) >> s2.linkTo( s19 ) >> s2.linkTo( s20 ) >> >> s5.linkTo( s7 ) >> s6.linkTo( s8 ) >> s5.linkTo( s8 ) >> s6.linkTo( s7 ) >> s5.linkTo( s17 ) >> s5.linkTo( s18 ) >> s6.linkTo( s19 ) >> s6.linkTo( s20 ) >> >> s9.linkTo( s11 ) >> s10.linkTo( s12 ) >> s9.linkTo( s12 ) >> s10.linkTo( s11 ) >> s9.linkTo( s17 ) >> s9.linkTo( s18 ) >> s10.linkTo( s19 ) >> s10.linkTo( s20 ) >> >> s13.linkTo( s15 ) >> s14.linkTo( s16 ) >> s13.linkTo( s16 ) >> s14.linkTo( s15 ) >> s13.linkTo( s17 ) >> s13.linkTo( s18 ) >> s14.linkTo( s19 ) >> s14.linkTo( s20 ) >> >> s3.linkTo( s21 ) >> s3.linkTo( s22 ) >> s4.linkTo( s23 ) >> s4.linkTo( s24 ) >> s7.linkTo( s25 ) >> s7.linkTo( s26 ) >> s8.linkTo( s27 ) >> s8.linkTo( s28 ) >> s11.linkTo( s29 ) >> s11.linkTo( s30 ) >> s12.linkTo( s31 ) >> s12.linkTo( s32 ) >> s15.linkTo( s33 ) >> s15.linkTo( s34 ) >> s16.linkTo( s35 ) >> s16.linkTo( s36 ) >> print "*** Building network" >> net.build() >> # In theory this doesn't do anything >> c1.start() >> c2.start() >> c3.start() >> >> print "*** Starting Switches" >> s1.start([c1]) >> s2.start([c1]) >> s3.start([c3]) >> s4.start([c2]) >> s5.start([c1]) >> s6.start([c1]) >> s7.start([c3]) >> s8.start([c2]) >> s9.start([c1]) >> s10.start([c1]) >> s11.start([c3]) >> s12.start([c2]) >> s13.start([c1]) >> s14.start([c1]) >> s15.start([c3]) >> s16.start([c2]) >> s17.start([c1]) >> s18.start([c1]) >> s19.start([c3]) >> s20.start([c2]) >> s21.start([c1]) >> s22.start([c1]) >> s23.start([c3]) >> s24.start([c2]) >> s25.start([c1]) >> s26.start([c1]) >> s27.start([c3]) >> s28.start([c2]) >> s29.start([c1]) >> s30.start([c1]) >> s31.start([c3]) >> s32.start([c2]) >> s33.start([c1]) >> s34.start([c1]) >> s35.start([c3]) >> s36.start([c2]) >> >> return net >> >> net = MultiControllerNet() >> CLI(net) >> >> >> _______________________________________________ >> mininet-discuss mailing list >> mininet-disc...@lists.stanford.edu >> https://mailman.stanford.edu/mailman/listinfo/mininet-discuss >> >> > >
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