[nox-dev] Rewrite MAC Address OpenFlow
Hi, I'm not able to change the MAC address of an HTTP packet OpenFlow follows the code I'm using to "try" to change, but it is coming out in error: actions = [openflow.OFPAT_SET_DL_DST, "00:00:00:00:00:02"] self.install_datapath_flow (dpid, flow, 5, 0, actions, bufid, openflow.OFP_DEFAULT_PRIORITY, inport, packet) I am developing a python load balancer. What am I doing wrong? Thanks, Alexander Scaranti ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev
[nox-dev] openvswitch controller communication
Hi All May not be the right forum but I would sincerely appreciate a pointer. How does the openvswitch communicate with a controller? What marshaling technique is used given that the controller can be implemented in any language? Where can I read about this? Thanks in advance Avinash ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev
Re: [nox-dev] Unable to Ping (OpenflowVMS)
I agree that it's probably not a NOX problem. I'm not sure mininet will help directly either, though our VM should mostly work out of the box. I would suggest making absolutely sure that your switches are starting and loading correctly. On May 27, 2011, at 12:23 PM, Murphy McCauley wrote: > I forgot to mention that I think OpenFlow VMS is no longer really supported, > with the idea being that mininet supercedes it. Maybe KK will chime in here. > :) > > It seems like maybe you have a problem with the switches/VMs and not really a > NOX issue. You could try putting a print statement in pyswitch's packet_in > handler to see if it's even getting any packets. > > -- Murphy > > On Friday, May 27, 2011 11:56:13 AM Daniel Philip wrote: >> I tried but still facing the same error. Host Unreachable on Host 1 screen. >> Also, I notice the following error message in all the screens (Of1, Of2, >> Host 1, Host 2) >> >> modprobe: FATAL: Could not load /lib/modules/2.6.27-rcl/modules.dep: No >> such file or directory >> >> Could you please clarify if this is what is causing the problem? >> >> Thanks, >> Daniel >> >> On Fri, May 27, 2011 at 8:33 PM, Murphy McCauley wrote: >>> If your topology has no loops, try "nox_core -v -v -i ptcp:6633 >>> pyswitch". >>> >>> Also, if you're not using the destiny branch, you might try that... >>> >>> -- Murphy >>> >>> On Friday, May 27, 2011 11:06:55 AM Daniel Philip wrote: Hi, As per the manual: $ nox_core -i ptcp:6633 routing Thanks, Daniel On Fri, May 27, 2011 at 8:03 PM, Murphy McCauley wrote: > What is the commandline you're using to run NOX? > > -- Murphy > > On Friday, May 27, 2011 10:48:41 AM Daniel Philip wrote: >> Hi, >> >> I tried to set up the example network as in OpenFlowVMS description >> page. > > I > >> also installed and could run successfully NOX controller as well as >> I > > could > >> run the vms-start.py. >> the screen for Of1, Of2, Host 1, Host 2 are successful. But, the >> ping failed. Host unreachable from host1 to host2 or vice versa. >> >> Could you please advice? >> >> Thanks, >> Daniel > ___ > nox-dev mailing list > nox-dev@noxrepo.org > http://noxrepo.org/mailman/listinfo/nox-dev ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev
Re: [nox-dev] Unable to Ping (OpenflowVMS)
OK. Thank you. I will try that too. In the meanwhile, I am also going to try out Mininet. Thanks again, Daniel On Fri, May 27, 2011 at 9:23 PM, Murphy McCauley wrote: > I forgot to mention that I think OpenFlow VMS is no longer really > supported, > with the idea being that mininet supercedes it. Maybe KK will chime in > here. > :) > > It seems like maybe you have a problem with the switches/VMs and not really > a > NOX issue. You could try putting a print statement in pyswitch's packet_in > handler to see if it's even getting any packets. > > -- Murphy > > On Friday, May 27, 2011 11:56:13 AM Daniel Philip wrote: > > I tried but still facing the same error. Host Unreachable on Host 1 > screen. > > Also, I notice the following error message in all the screens (Of1, Of2, > > Host 1, Host 2) > > > > modprobe: FATAL: Could not load /lib/modules/2.6.27-rcl/modules.dep: No > > such file or directory > > > > Could you please clarify if this is what is causing the problem? > > > > Thanks, > > Daniel > > > > On Fri, May 27, 2011 at 8:33 PM, Murphy McCauley wrote: > > > If your topology has no loops, try "nox_core -v -v -i ptcp:6633 > > > pyswitch". > > > > > > Also, if you're not using the destiny branch, you might try that... > > > > > > -- Murphy > > > > > > On Friday, May 27, 2011 11:06:55 AM Daniel Philip wrote: > > > > Hi, > > > > > > > > As per the manual: > > > > > > > > $ nox_core -i ptcp:6633 routing > > > > > > > > Thanks, > > > > Daniel > > > > > > > > On Fri, May 27, 2011 at 8:03 PM, Murphy McCauley > wrote: > > > > > What is the commandline you're using to run NOX? > > > > > > > > > > -- Murphy > > > > > > > > > > On Friday, May 27, 2011 10:48:41 AM Daniel Philip wrote: > > > > > > Hi, > > > > > > > > > > > > I tried to set up the example network as in OpenFlowVMS > description > > > > > > page. > > > > > > > > > > I > > > > > > > > > > > also installed and could run successfully NOX controller as well > as > > > > > > I > > > > > > > > > > could > > > > > > > > > > > run the vms-start.py. > > > > > > the screen for Of1, Of2, Host 1, Host 2 are successful. But, the > > > > > > ping failed. Host unreachable from host1 to host2 or vice versa. > > > > > > > > > > > > Could you please advice? > > > > > > > > > > > > Thanks, > > > > > > Daniel > ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev
Re: [nox-dev] Unable to run components under 'netapps'
Did you run the boot.sh script specifying only core apps? Perhaps even more importantly, it seems like you're using a very old version of NOX. Unless your switches don't support OpenFlow 1.0 or you have some other reason not to do so, I would suggest you start by upgrading to NOX destiny. -- Murphy On Friday, May 27, 2011 12:18:42 PM andrea simeoni wrote: > Hi guys, > > I have successfully installed a Virtual Machine containing NOX and Mininet. > Following the walkthrough I was able to transform an HUB to a learning > switch. > > Moreover I premit that I've well understood how components are linked by > mean of "meta.xml" files, > > Now I'm trying to use the "sample_routing" component present in > "noxcore/src/nox/netapps.." > But when I issue the command > > > ./nox_core -v -i ptcp:6633 sample_routing > > I get the following error: > > 00017|nox|ERR:Application 'sample_routing' description not found. > > I'm ONLY able to launch components in the 'coreapps' directory > Notice that in my installation I can't find two directories > > noxcore/build/src/nox/netapps > noxcore/build/src/nox/webapps > > while it's only present > > noxcore/build/src/nox/coreapps > > moreover the following three directories exist > > noxcore/src/nox/netapps > noxcore/src/nox/webapps > noxcore/src/nox/coreapps > > Maybe that is the problem? > > Could someone help me? ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev
Re: [nox-dev] Unable to Ping (OpenflowVMS)
I forgot to mention that I think OpenFlow VMS is no longer really supported, with the idea being that mininet supercedes it. Maybe KK will chime in here. :) It seems like maybe you have a problem with the switches/VMs and not really a NOX issue. You could try putting a print statement in pyswitch's packet_in handler to see if it's even getting any packets. -- Murphy On Friday, May 27, 2011 11:56:13 AM Daniel Philip wrote: > I tried but still facing the same error. Host Unreachable on Host 1 screen. > Also, I notice the following error message in all the screens (Of1, Of2, > Host 1, Host 2) > > modprobe: FATAL: Could not load /lib/modules/2.6.27-rcl/modules.dep: No > such file or directory > > Could you please clarify if this is what is causing the problem? > > Thanks, > Daniel > > On Fri, May 27, 2011 at 8:33 PM, Murphy McCauley wrote: > > If your topology has no loops, try "nox_core -v -v -i ptcp:6633 > > pyswitch". > > > > Also, if you're not using the destiny branch, you might try that... > > > > -- Murphy > > > > On Friday, May 27, 2011 11:06:55 AM Daniel Philip wrote: > > > Hi, > > > > > > As per the manual: > > > > > > $ nox_core -i ptcp:6633 routing > > > > > > Thanks, > > > Daniel > > > > > > On Fri, May 27, 2011 at 8:03 PM, Murphy McCauley wrote: > > > > What is the commandline you're using to run NOX? > > > > > > > > -- Murphy > > > > > > > > On Friday, May 27, 2011 10:48:41 AM Daniel Philip wrote: > > > > > Hi, > > > > > > > > > > I tried to set up the example network as in OpenFlowVMS description > > > > > page. > > > > > > > > I > > > > > > > > > also installed and could run successfully NOX controller as well as > > > > > I > > > > > > > > could > > > > > > > > > run the vms-start.py. > > > > > the screen for Of1, Of2, Host 1, Host 2 are successful. But, the > > > > > ping failed. Host unreachable from host1 to host2 or vice versa. > > > > > > > > > > Could you please advice? > > > > > > > > > > Thanks, > > > > > Daniel ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev
[nox-dev] Unable to run components under 'netapps'
Hi guys, I have successfully installed a Virtual Machine containing NOX and Mininet. Following the walkthrough I was able to transform an HUB to a learning switch. Moreover I premit that I've well understood how components are linked by mean of "meta.xml" files, Now I'm trying to use the "sample_routing" component present in "noxcore/src/nox/netapps.." But when I issue the command ./nox_core -v -i ptcp:6633 sample_routing I get the following error: 00017|nox|ERR:Application 'sample_routing' description not found. I'm ONLY able to launch components in the 'coreapps' directory Notice that in my installation I can't find two directories noxcore/build/src/nox/netapps noxcore/build/src/nox/webapps while it's only present noxcore/build/src/nox/coreapps moreover the following three directories exist noxcore/src/nox/netapps noxcore/src/nox/webapps noxcore/src/nox/coreapps Maybe that is the problem? Could someone help me? ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev
Re: [nox-dev] Unable to Ping (OpenflowVMS)
I tried but still facing the same error. Host Unreachable on Host 1 screen. Also, I notice the following error message in all the screens (Of1, Of2, Host 1, Host 2) modprobe: FATAL: Could not load /lib/modules/2.6.27-rcl/modules.dep: No such file or directory Could you please clarify if this is what is causing the problem? Thanks, Daniel On Fri, May 27, 2011 at 8:33 PM, Murphy McCauley wrote: > If your topology has no loops, try "nox_core -v -v -i ptcp:6633 pyswitch". > > Also, if you're not using the destiny branch, you might try that... > > -- Murphy > > On Friday, May 27, 2011 11:06:55 AM Daniel Philip wrote: > > Hi, > > > > As per the manual: > > > > $ nox_core -i ptcp:6633 routing > > > > Thanks, > > Daniel > > > > On Fri, May 27, 2011 at 8:03 PM, Murphy McCauley wrote: > > > What is the commandline you're using to run NOX? > > > > > > -- Murphy > > > > > > On Friday, May 27, 2011 10:48:41 AM Daniel Philip wrote: > > > > Hi, > > > > > > > > I tried to set up the example network as in OpenFlowVMS description > > > > page. > > > > > > I > > > > > > > also installed and could run successfully NOX controller as well as I > > > > > > could > > > > > > > run the vms-start.py. > > > > the screen for Of1, Of2, Host 1, Host 2 are successful. But, the ping > > > > failed. Host unreachable from host1 to host2 or vice versa. > > > > > > > > Could you please advice? > > > > > > > > Thanks, > > > > Daniel > ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev
Re: [nox-dev] send_openflow_packet interface with buffer and ofp_action_header
send_openflow_packet()'s API is kind of broken due to changes made since earlier versions of OpenFlow, and is very, very likely to be removed altogether in the next major release of NOX. There are other ways to do the same thing. If you look at the source of send_openflow_packet(), you'll see that it just calls some other functions to do all the work, which should give you an idea of other ways you might do it, but I don't remember a super easy way off the top of my head. BUT, I think you can basically just take a buffer full of actions, cast it to an array of ofp_action_header, and it'll work fine with send_openflow_packet() (though it's pretty ugly). To get a buffer full of actions from an ofp_action_list, use myactionlist.mem_size() to allocate a buffer of the correct size (use this number for the actions_len argument to send_openflow_packet() too), and then use myactionlist.pack(mybuffer) to fill the buffer with the actions. For help creating a Buffer, look in include/buffer.hh. There are at least a couple subclasses, but Array_buffer is probably a safe choice. Should be as easy as new Array_buffer(your_data, your_data_length). -- Murphy On Thursday, May 26, 2011 02:11:12 PM Gopinath Palani wrote: > Hello , > > Please let me know how to use > send_openflow_packet(const datapathid&, const Buffer& packet, const > ofp_action_header actions[],unit16_t actions_len,unit16_t in_port,bool > block); my requirement is to create udp packet and send it to a particular > tp_dst and port, It will be helpful if someone guide me in > creating a Buffer, > and I'm able to create ofp_action_list with actions for OFPAT_SET_TP_DST > and OFPAT_OUTPUT but don't know how to convert ofp_action_list to > ofp_action_header type. > > Thanks > Gopinath ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev
Re: [nox-dev] Unable to Ping (OpenflowVMS)
If your topology has no loops, try "nox_core -v -v -i ptcp:6633 pyswitch". Also, if you're not using the destiny branch, you might try that... -- Murphy On Friday, May 27, 2011 11:06:55 AM Daniel Philip wrote: > Hi, > > As per the manual: > > $ nox_core -i ptcp:6633 routing > > Thanks, > Daniel > > On Fri, May 27, 2011 at 8:03 PM, Murphy McCauley wrote: > > What is the commandline you're using to run NOX? > > > > -- Murphy > > > > On Friday, May 27, 2011 10:48:41 AM Daniel Philip wrote: > > > Hi, > > > > > > I tried to set up the example network as in OpenFlowVMS description > > > page. > > > > I > > > > > also installed and could run successfully NOX controller as well as I > > > > could > > > > > run the vms-start.py. > > > the screen for Of1, Of2, Host 1, Host 2 are successful. But, the ping > > > failed. Host unreachable from host1 to host2 or vice versa. > > > > > > Could you please advice? > > > > > > Thanks, > > > Daniel ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev
Re: [nox-dev] Unable to Ping (OpenflowVMS)
Hi, As per the manual: $ nox_core -i ptcp:6633 routing Thanks, Daniel On Fri, May 27, 2011 at 8:03 PM, Murphy McCauley wrote: > What is the commandline you're using to run NOX? > > -- Murphy > > On Friday, May 27, 2011 10:48:41 AM Daniel Philip wrote: > > Hi, > > > > I tried to set up the example network as in OpenFlowVMS description page. > I > > also installed and could run successfully NOX controller as well as I > could > > run the vms-start.py. > > the screen for Of1, Of2, Host 1, Host 2 are successful. But, the ping > > failed. Host unreachable from host1 to host2 or vice versa. > > > > Could you please advice? > > > > Thanks, > > Daniel > ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev
Re: [nox-dev] Unable to Ping (OpenflowVMS)
What is the commandline you're using to run NOX? -- Murphy On Friday, May 27, 2011 10:48:41 AM Daniel Philip wrote: > Hi, > > I tried to set up the example network as in OpenFlowVMS description page. I > also installed and could run successfully NOX controller as well as I could > run the vms-start.py. > the screen for Of1, Of2, Host 1, Host 2 are successful. But, the ping > failed. Host unreachable from host1 to host2 or vice versa. > > Could you please advice? > > Thanks, > Daniel ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev
Re: [nox-dev] Error message while running the nox controller
I don't think I'm aware of any bugs that would cause this in stock NOX, but can you retry with the destiny branch? If it continues to happen with the destiny branch, can you please use tcpdump or wireshark to send a trace of the connection between NOX at the switch? -- Murphy On Friday, May 27, 2011 10:36:10 AM ahmad numan wrote: > ./nox_core -V gives output > > "*NOX 0.9.0(zaku)~full~beta (nox_core)*" > > I download using git* > * > > *git clone git://noxrepo.org/nox* > > > Ahmed bilal > > On Fri, May 27, 2011 at 9:12 PM, Murphy McCauley wrote: > > Which version of NOX is this? Has it been modified at all? > > > > -- Murphy > > > > On Friday, May 27, 2011 05:58:16 AM ahmad numan wrote: > > > Hello > > > I configured a linux powered machine to run as OpenFlow switch (OVS) > > > and connect it with out-of-band NOX controller (NOX controller was > > > > initialized > > > > > by following instruction "*nox_core -i ptcp:6633 routing*"). When I > > > connected the switch with controller i got following error message > > > > > > *openflow-event|ERR:received Openflow error packet from > > > > dpid=002320ba0007: > > > type=1, code=7, 24 bytes of data* > > > > > > and the "*ovs-openflowd*" terminal showed following error* > > > > > > "attempt to reuse the buffer*" > > > > > > while discussing on ovs-discuss mailing list they suggest that "Send a > > > given buffer_id only in a single OpenFlow request". Guide me how can I > > > solve this problem > > > > > > Thanks > > > Ahmed Bilal ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev
[nox-dev] Unable to Ping (OpenflowVMS)
Hi, I tried to set up the example network as in OpenFlowVMS description page. I also installed and could run successfully NOX controller as well as I could run the vms-start.py. the screen for Of1, Of2, Host 1, Host 2 are successful. But, the ping failed. Host unreachable from host1 to host2 or vice versa. Could you please advice? Thanks, Daniel ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev
Re: [nox-dev] Error message while running the nox controller
./nox_core -V gives output "*NOX 0.9.0(zaku)~full~beta (nox_core)*" I download using git* * *git clone git://noxrepo.org/nox* Ahmed bilal On Fri, May 27, 2011 at 9:12 PM, Murphy McCauley wrote: > Which version of NOX is this? Has it been modified at all? > > -- Murphy > > On Friday, May 27, 2011 05:58:16 AM ahmad numan wrote: > > Hello > > I configured a linux powered machine to run as OpenFlow switch (OVS) and > > connect it with out-of-band NOX controller (NOX controller was > initialized > > by following instruction "*nox_core -i ptcp:6633 routing*"). When I > > connected the switch with controller i got following error message > > > > *openflow-event|ERR:received Openflow error packet from > dpid=002320ba0007: > > type=1, code=7, 24 bytes of data* > > > > and the "*ovs-openflowd*" terminal showed following error* > > > > "attempt to reuse the buffer*" > > > > while discussing on ovs-discuss mailing list they suggest that "Send a > > given buffer_id only in a single OpenFlow request". Guide me how can I > > solve this problem > > > > Thanks > > Ahmed Bilal > ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev
Re: [nox-dev] Error message while running the nox controller
Which version of NOX is this? Has it been modified at all? -- Murphy On Friday, May 27, 2011 05:58:16 AM ahmad numan wrote: > Hello > I configured a linux powered machine to run as OpenFlow switch (OVS) and > connect it with out-of-band NOX controller (NOX controller was initialized > by following instruction "*nox_core -i ptcp:6633 routing*"). When I > connected the switch with controller i got following error message > > *openflow-event|ERR:received Openflow error packet from dpid=002320ba0007: > type=1, code=7, 24 bytes of data* > > and the "*ovs-openflowd*" terminal showed following error* > > "attempt to reuse the buffer*" > > while discussing on ovs-discuss mailing list they suggest that "Send a > given buffer_id only in a single OpenFlow request". Guide me how can I > solve this problem > > Thanks > Ahmed Bilal ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev
[nox-dev] Error message while running the nox controller
Hello I configured a linux powered machine to run as OpenFlow switch (OVS) and connect it with out-of-band NOX controller (NOX controller was initialized by following instruction "*nox_core -i ptcp:6633 routing*"). When I connected the switch with controller i got following error message *openflow-event|ERR:received Openflow error packet from dpid=002320ba0007: type=1, code=7, 24 bytes of data* and the "*ovs-openflowd*" terminal showed following error* "attempt to reuse the buffer*" while discussing on ovs-discuss mailing list they suggest that "Send a given buffer_id only in a single OpenFlow request". Guide me how can I solve this problem Thanks Ahmed Bilal ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev
