Hi Murphy, Thanks a lot for your suggestion. The problem is resolved now after I used the following command to run PoX on the controller node: ./pox.py forwarding.l2_learning openflow.discovery --eat-early-packets openflow.spanning_tree --no-flood --hold-down
by following this <https://github.com/noxrepo/pox/issues/139> link but still hosts are unable to communicate. On Sun, Aug 16, 2015 at 2:51 AM, Murphy McCauley <murphy.mccau...@gmail.com> wrote: > Pleases see the "I'm seeing many packet_in messages and forwarding isn't > working; what gives?" and "Does POX support topologies with loops?" > questions in the FAQ. > > -- Murphy > > On Aug 15, 2015, at 2:11 AM, Sadia Bashir <11msccssbas...@seecs.edu.pk> > wrote: > > Hello, > > I have set up fat-tree topology using InstaGENI aggregate, pls see file > attached for more detail. > > I am setting up edge, aggregate and core switches using following set of > commands: > > ovs-vsctl add-br br0 > ifconfig eth1 0 > ifconfig eth2 0 > ifconfig eth3 0 > ifconfig eth4 0 > ovs-vsctl list-br > ovs-vsctl add-port br0 eth1 > ovs-vsctl add-port br0 eth2 > ovs-vsctl add-port br0 eth3 > ovs-vsctl add-port br0 eth4 > ovs-vsctl list-ports br0 > ifconfig eth1 0 up > ifconfig eth2 0 up > ifconfig eth3 0 up > ifconfig eth4 0 up > ovs-vsctl set-controller br0 tcp:<controller IP>:6633 > ovs-vsctl set bridge br0 protocols=OpenFlow10 > ovs-vsctl set-fail-mode br0 secure > > I have set up a POX(dart) controller with public IP and running > forwarding.l2_learning on it: > ./pox.py log.level --DEBUG pox.forwarding.l2_learning > > all edge, aggregate and core nodes are running ovs 2.3.1 version. > > But firstly, I am not able to ping/iperf between two hosts and secondly, > the controller runs with this error: > > ERROR:openflow.of_01:[62-75-7f-15-b9-4d 14] OpenFlow Error: > [62-75-7f-15-b9-4d 14] Error: header: > [62-75-7f-15-b9-4d 14] Error: version: 1 > [62-75-7f-15-b9-4d 14] Error: type: 1 (OFPT_ERROR) > [62-75-7f-15-b9-4d 14] Error: length: 36 > [62-75-7f-15-b9-4d 14] Error: xid: 118250 > [62-75-7f-15-b9-4d 14] Error: type: OFPET_BAD_REQUEST (1) > [62-75-7f-15-b9-4d 14] Error: code: OFPBRC_BUFFER_UNKNOWN (8) > [62-75-7f-15-b9-4d 14] Error: datalen: 24 > [62-75-7f-15-b9-4d 14] Error: 0000: 01 0d 00 18 00 01 cd ea 00 00 05 d4 > 00 02 00 08 |................| > > Any help/suggestion to fix this issue is much appreciated. OR if anyone in > the list has experience with setting up GENI topologies can point a problem > in the steps I am following. PS the same steps work fine with simple > GENI-topology(3 hosts, 1 switch, 1 controller). > > > Thank you, > *Sadia Bashir* > > -- > > > <GENI Final Fat-tree Topology.png> > > > --