Hi,
On 2015年06月01日 17:22, Hm Balarama wrote: > Hi Iwase, > > Please make me clear. > I've got 2 options. First, I should write a Ryu application. > Or, I could use the simple_switch_stp.py. > Is that right? Do you think there is no way except above 2 options. Yes, I think so. If you want to evaluate the "detection time" of the link failure, simple_switch_stp.py is easy to use. But if you want to evaluate the "recovery time" of link failure, you need to write your own Ryu application. Because simple_switch_stp.py is the sample application which emulates STP protocol. Thanks, Iwase > > Thanks, > Tsogbayar. > > On Mon, Jun 1, 2015 at 5:07 PM, Yusuke Iwase <[email protected] > <mailto:[email protected]>> wrote: > > Hi, > > > On 2015年06月01日 15:09, Hm Balarama wrote: > > Hi, > > > > Mine doesn't work with Mininet. > > Which version do you use? > > I downloaded github.com/osrg/ryu.git <http://github.com/osrg/ryu.git> > <http://github.com/osrg/ryu.git> and installed it. Git branch is the master. > > I could get link events when I run $ ryu-manager --observe-links > --verbose ryu.app.gui_topology.gui_topology > > > > EVENT switches->WebSocketTopology EventLinkAdd > > EVENT ofp_event->switches EventOFPPacketIn > > EVENT ofp_event->switches EventOFPPacketIn > > EVENT switches->WebSocketTopology EventLinkAdd > > EVENT switches->WebSocketTopology EventLinkAdd > > EVENT ofp_event->switches EventOFPPacketIn > > EVENT switches->WebSocketTopology EventLinkAdd > > EVENT ofp_event->switches EventOFPPacketIn > > EVENT ofp_event->switches EventOFPPacketIn > > EVENT ofp_event->switches EventOFPPacketIn > > > > But h1 can't reach to other hosts. > > In your case, was same. > > The same. > > $ sudo python test_topo.py > *** Configuring hosts > h1 h2 h3 > *** Starting CLI: > mininet> h1 ping h2 > ^CPING 10.0.0.2 (10.0.0.2) 56(84) bytes of data. > > --- 10.0.0.2 ping statistics --- > 3 packets transmitted, 0 received, 100% packet loss, time 2016ms > > mininet> > > Because gui_topology is the sample application, installs the flow for > link discovery only, > but does not install the flow for the communications between hosts. > > If you want to discover links and enable to communicate each other at the > same time, > I recommend you to write your Ryu application. > > Thanks, > Iwase > > > > > Thanks, > > Tsogbayar > > > > > > On Mon, Jun 1, 2015 at 10:11 AM, Yusuke Iwase <[email protected] > <mailto:[email protected]> <mailto:[email protected] > <mailto:[email protected]>>> wrote: > > > > Hi, > > > > On 2015年05月29日 17:46, Hm Balarama wrote: > > > Hi Iwase, > > > > > > It didn't work because I used loop topology. > > > s1 > > > / \ > > > / \ > > > s2----s3 > > > > > > > On my mininet environment, I made a looped topology, > > gui_topology worked fine and I could get > EventLinkAdd/EventLinkDelete events. > > > > > > $ sudo python test_topo.py > > Unable to contact the remote controller at 127.0.0.1:6633 > <http://127.0.0.1:6633> <http://127.0.0.1:6633> > > *** Configuring hosts > > h1 h2 h3 > > *** Starting CLI: > > mininet> net > > h1 h1-eth0:s1-eth1 > > h2 h2-eth0:s2-eth1 > > h3 h3-eth0:s3-eth1 > > s1 lo: s1-eth1:h1-eth0 s1-eth2:s2-eth2 s1-eth3:s3-eth3 > > s2 lo: s2-eth1:h2-eth0 s2-eth2:s1-eth2 s2-eth3:s3-eth2 > > s3 lo: s3-eth1:h3-eth0 s3-eth2:s2-eth3 s3-eth3:s1-eth3 > > c0 > > mininet> > > > > > > $ ryu-manager --observe-links --verbose > ryu.app.gui_topology.gui_topology > > ... > > > > > > # input 'ifconfig s1-eth2 down' on s1: > > --- > > EVENT ofp_event->switches EventOFPPortStatus > > EVENT ofp_event->dpset EventOFPPortStatus > > EVENT switches->WebSocketTopology EventLinkDelete > > EVENT switches->WebSocketTopology EventLinkDelete > > DPSET: A port was modified.(datapath id = 0000000000000001, port > number = 2) > > EVENT ofp_event->switches EventOFPPortStatus > > EVENT ofp_event->dpset EventOFPPortStatus > > DPSET: A port was modified.(datapath id = 0000000000000002, port > number = 2) > > --- > > > > Thanks, > > Iwase > > > > > > > I'm sorry if I didn't let you know. > > > In this case, what should I do? > > > > > > Thanks, > > > Tsogbayar. > > > > > > > > > On Fri, May 29, 2015 at 2:10 PM, Yusuke Iwase > <[email protected] <mailto:[email protected]> > <mailto:[email protected] <mailto:[email protected]>> > <mailto:[email protected] <mailto:[email protected]> > <mailto:[email protected] <mailto:[email protected]>>>> wrote: > > > > > > Hi, > > > > > > How about using gui_topology.py with --verbose option? > > > > > > $ ryu-manager --observe-links --verbose > ryu.app.gui_topology.gui_topology > > > > > > With --verbose option, you will get many messages, > > > but please check only EventLinkAdd/EventLinkDelete events, > > > when a link goes up or down. > > > > > > eg.) > > > EVENT switches->WebSocketTopology EventLinkDelete > > > EVENT switches->WebSocketTopology EventLinkDelete > > > > > > Thanks, > > > Iwase > > > > > > > > > On 2015年05月29日 13:54, Hm Balarama wrote: > > > > Hi Iwase, > > > > > > > > I purposed just using Ryu's official apps. Not user's > developed one. > > > > Are there anyway to test a link failure in Ryu? > > > > > > > > Thanks, > > > > Tsogbayar. > > > > > > > > On Fri, May 29, 2015 at 1:23 PM, Yusuke Iwase > <[email protected] <mailto:[email protected]> > <mailto:[email protected] <mailto:[email protected]>> > <mailto:[email protected] <mailto:[email protected]> > <mailto:[email protected] <mailto:[email protected]>>> > <mailto:[email protected] <mailto:[email protected]> > <mailto:[email protected] <mailto:[email protected]>> > <mailto:[email protected] <mailto:[email protected]> > <mailto:[email protected] <mailto:[email protected]>>>>> wrote: > > > > > > > > Hi, > > > > > > > > > So, did you mean I should run like that ryu-manager > simple_switch_stp.py --observe-links? > > > > > > > > No, you don't have to use simple_switch_stp.py, > > > > but you should write your Ryu application and > > > > catch EventLinkAdd/EventLinkDelete events as followings. > > > > > > > > ----------------- > > > > Snippet of code: > > > > ----------------- > > > > ... > > > > from ryu.topology import api > > > > from ryu.topology.event import EventLinkAdd, > EventLinkDelete > > > > ... > > > > > > > > class SampleApp(app_manager.RyuApp): > > > > ... > > > > @set_ev_cls(EventLinkAdd, MAIN_DISPATCHER) > > > > def _link_add_handler(self, ev): > > > > self.logger.info <http://self.logger.info> > <http://self.logger.info> <http://self.logger.info> > <http://self.logger.info>('EventLinkAdd = %s', ev) > > > > ... > > > > > > > > @set_ev_cls(EventLinkDelete, MAIN_DISPATCHER) > > > > def _link_del_handler(self, ev): > > > > self.logger.info <http://self.logger.info> > <http://self.logger.info> <http://self.logger.info> > <http://self.logger.info>('EventLinkDelete = %s', ev) > > > > ... > > > > ----------------- > > > > > > > > And start your app with --observe-links option. > > > > > > > > $ ryu-manager --observe-links ryu.app.sample_app > > > > loading app ryu.app.sample_app > > > > loading app ryu.topology.switches > > > > loading app ryu.controller.ofp_handler > > > > instantiating app ryu.app.sample_app of SampleApp > > > > instantiating app ryu.topology.switches of Switches > > > > instantiating app ryu.controller.ofp_handler of > OFPHandler > > > > ... > > > > > > > > if you input "ifconfig s1-eth2 down" on switch, your > app will show the following messages. > > > > ... > > > > EventLinkDelete = EventLinkDelete<Link: Port<dpid=1, > port_no=2, DOWN> to Port<dpid=2, port_no=2, LIVE>> > > > > EventLinkDelete = EventLinkDelete<Link: Port<dpid=2, > port_no=2, LIVE> to Port<dpid=1, port_no=2, LIVE>> > > > > ... > > > > > > > > > > > > For more information about developing your app, > > > > please refer to the Ryu-Documentation. > > > > http://ryu.readthedocs.org/en/latest/developing.html > > > > > > > > > > > > Thanks, > > > > Iwase > > > > > > > > > > > > On 2015年05月29日 12:26, Hm Balarama wrote: > > > > > Thank you, Iwase. > > > > > Yes, I used simple_switch_stp.py. > > > > > I see timeout_check_period and others in switches.py. > > > > > So, did you mean I should run like that ryu-manager > simple_switch_stp.py --observe-links? > > > > > I'm sorry, I'm a newbee in Ryu. > > > > > > > > > > Thank you, > > > > > Tsogbayar. > > > > > > > > > > On Fri, May 29, 2015 at 11:16 AM, Yusuke Iwase > <[email protected] <mailto:[email protected]> > <mailto:[email protected] <mailto:[email protected]>> > <mailto:[email protected] <mailto:[email protected]> > <mailto:[email protected] <mailto:[email protected]>>> > <mailto:[email protected] <mailto:[email protected]> > <mailto:[email protected] <mailto:[email protected]>> > <mailto:[email protected] <mailto:[email protected]> > <mailto:[email protected] <mailto:[email protected]>>>> > <mailto:[email protected] <mailto:[email protected]> > <mailto:[email protected] <mailto:[email protected]>> > <mailto:[email protected] <mailto:[email protected]> > <mailto:[email protected] <mailto:[email protected]>>> > <mailto:[email protected] <mailto:[email protected]> > <mailto:[email protected] <mailto:[email protected]>> > <mailto:[email protected] <mailto:[email protected]> > <mailto:[email protected] <mailto:[email protected]>>>>>> wrote: > > > > > > > > > > Hi, > > > > > > > > > > First, what Ryu application are you using? > simple_switch_stp.py? > > > > > If so, simple_switch_stp.py is one of the sample > application of Ryu. > > > > > In other words, Ryu does not require to use BPDU, > > > > > just performing like STP switch by using > simple_switch_stp.py. > > > > > > > > > > If you want to recover a link failure with Ryu, > > > > > I recommend you to use ryu.topology modules with > --observe-links option of ryu-manager. > > > > > > https://github.com/osrg/ryu/tree/master/ryu/topology > > > > > > > > > > Thanks, > > > > > Iwase > > > > > > > > > > On 2015年05月29日 10:55, Hm Balarama wrote: > > > > > > Hello, > > > > > > > > > > > > I tested Ryu with loop topology. I used 3 > switches and those are OF enabled. > > > > > > I wanted how much time does Ryu recover a link > failure when I remove cable. > > > > > > So I changed DEFAULT_MAX_AGE in bpdu.py. Also I > set DEFAULT_HELLO_TIME=1. > > > > > > I tested 4 times. > > > > > > DEFAULT_MAX_AGE =1 and average recovery time > was 74 seconds > > > > > > DEFAULT_MAX_AGE =2 and average recovery time > was 72 seconds > > > > > > DEFAULT_MAX_AGE =3 and average recovery time > was 71 seconds > > > > > > DEFAULT_MAX_AGE =5 and average recovery time > was 74 seconds > > > > > > It seems to me a little bit strange. I don't > know why. > > > > > > I expected DEFAULT_MAX_AGE=1 takes very short > time than DEFAULT_MAX_AGE =2,3,5 but it doesn't. > > > > > > Could you please tell me why it happened? > > > > > > > > > > > > Thank you, > > > > > > Tsogbayar. > > > > > > > > > > > > > > > > > > > ------------------------------------------------------------------------------ > > > > > > > > > > > > > > > > > > > > > > > > _______________________________________________ > > > > > > Ryu-devel mailing list > > > > > > [email protected] > <mailto:[email protected]> > <mailto:[email protected] > <mailto:[email protected]>> > <mailto:[email protected] > <mailto:[email protected]> > <mailto:[email protected] > <mailto:[email protected]>>> > <mailto:[email protected] > <mailto:[email protected]> > <mailto:[email protected] > <mailto:[email protected]>> > <mailto:[email protected] > <mailto:[email protected]> > <mailto:[email protected] > <mailto:[email protected]>>>> > <mailto:[email protected] > <mailto:[email protected]> > <mailto:[email protected] > <mailto:[email protected]>> > <mailto:[email protected] > <mailto:[email protected]> > <mailto:[email protected] > <mailto:[email protected]>>> > <mailto:[email protected] > <mailto:[email protected]> > <mailto:[email protected] > <mailto:[email protected]>> > <mailto:[email protected] > <mailto:[email protected]> > <mailto:[email protected] > <mailto:[email protected]>>>>> > > > > > > > https://lists.sourceforge.net/lists/listinfo/ryu-devel > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > ------------------------------------------------------------------------------ > > > > > > > > > > > > > > > > > > > > _______________________________________________ > > > > > Ryu-devel mailing list > > > > > [email protected] > <mailto:[email protected]> > <mailto:[email protected] > <mailto:[email protected]>> > <mailto:[email protected] > <mailto:[email protected]> > <mailto:[email protected] > <mailto:[email protected]>>> > <mailto:[email protected] > <mailto:[email protected]> > <mailto:[email protected] > <mailto:[email protected]>> > <mailto:[email protected] > <mailto:[email protected]> > <mailto:[email protected] > <mailto:[email protected]>>>> > > > > > https://lists.sourceforge.net/lists/listinfo/ryu-devel > > > > > > > > > > > > > > > > > > > > > > > > > > ------------------------------------------------------------------------------ > > > > > > > > > > > > > > > > _______________________________________________ > > > > Ryu-devel mailing list > > > > [email protected] > <mailto:[email protected]> > <mailto:[email protected] > <mailto:[email protected]>> > <mailto:[email protected] > <mailto:[email protected]> > <mailto:[email protected] > <mailto:[email protected]>>> > > > > https://lists.sourceforge.net/lists/listinfo/ryu-devel > > > > > > > > > > > > > > > > > > > > ------------------------------------------------------------------------------ > > > > > > > > > > > > _______________________________________________ > > > Ryu-devel mailing list > > > [email protected] > <mailto:[email protected]> > <mailto:[email protected] > <mailto:[email protected]>> > > > https://lists.sourceforge.net/lists/listinfo/ryu-devel > > > > > > > > > > > > > > ------------------------------------------------------------------------------ > > > > > > > > _______________________________________________ > > Ryu-devel mailing list > > [email protected] <mailto:[email protected]> > > https://lists.sourceforge.net/lists/listinfo/ryu-devel > > > > > > > ------------------------------------------------------------------------------ > > > > _______________________________________________ > Ryu-devel mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/ryu-devel > ------------------------------------------------------------------------------ _______________________________________________ Ryu-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/ryu-devel
