Hi, please take a minute and go through the whole wiki, as it will provide some general insight. The answers to most questions are there. For the specific question, see http://noxrepo.org/noxwiki/index.php/NOX_Components, and specifically "Discovery", "Topology" and "Authenticator", which are both used by the 'routing' application.
Also http://noxrepo.org/noxwiki/index.php/FAQ#What_kind_of_routing_does_NOX_support.3F Regards 2011/3/10 杨宇 <[email protected]> > Hi,Kyriakos Zarifis > I'm little confused by the followings; > In the webpage "http://noxrepo.org/noxwiki/index.php/Routing " there > has the following sentences: > The routing application keeps track of shortest-path routes between any > two authenticated datapaths in the network. Routing interacts with the > Topology component in order to maintain routes. On link changes, the set of > affected routes is updated. > " On link changes, the set of affected routes is updated." How the > routing application know about the link state changed? like sending the > hello packet in OSPF? > What's the mechanism of the routing application? How it works with > the NOX.. > Thanks a lot. > > > Best regards > ------------------ > Yang > 2011-03-10 > > ------------------------------------------------------------- > 发件人：Kyriakos Zarifis > 发送日期：2011-03-10 10:24:20 > 收件人：杨宇 > 抄送：kk yap; nox-dev > 主题：Re: [nox-dev] different between ofdatapath and dpctl > > >Hi, > > > >as KK said, if you want IP routing functionality you would have to build > an > >application with the routing logic yourself on top of NOX. The 'routing' > >functionality that ships with nox does not do traditional IP routing (what > >is does is briefly described here: > >http://noxrepo.org/noxwiki/index.php/Routing ) > > > >Depending on what you want to do, this existing "routing" component might > >work for you. (you can decide after taking a look at how it works and what > >it actually does) Otherwise, the wiki itself provides information on > >developing your own components. > > > >If you just want to see the topology that you described working, running > >./nox_core with the 'sample_routing' component should do it. > >But implementing full traditional IP routing logic would require some more > >effort. > > > >2011/3/9 杨宇 <[email protected]> > > > >> Hi, > >> Which webpage or tutorial may be a reference? > >> May you give me some suggestion? > >> > >> Best regards > >> ------------------ > >> Yang > >> 2011-03-10 > >> > >> ------------------------------------------------------------- > >> 发件人：kk yap > >> 发送日期：2011-03-10 09:46:14 > >> 收件人：杨宇 > >> 抄送：nox-dev > >> 主题：Re: Re: Re: [nox-dev] different between ofdatapath and dpctl > >> > >> > > >> Hi, > >> > >> You have to write your own controller components for this. From what > >> I remember, NOX does not ship with standard components that is "full > >> IP routing". I might be wrong. > >> > >> Regards > >> KK > >> > >> 2011/3/9 杨宇 <[email protected]>: > >> > Hi kk yap, > >> > Thanks for your reply. > >> > These days, I read a lot of tutorial of openflow and nox in the > >> > website. Maybe I mixed these command line. > >> > Which I want to do is the followings: > >> > > >> > I want to set up a topology like this: > >> > > >> > > >> > controller > >> > __________|__________ > >> > | | | > >> > switch switch switch > >> > > >> > | | > >> > PC1 PC2 > >> > > >> > The openflow switches should be worked as routers. PC1 and Pc2 > are > >> in > >> > the different subnet. > >> > > >> > What should I configure the switches and controllers that Pc1 can > >> ping > >> > the PC2. > >> > > >> > I was confused because lots of the experiment are in the mininet > and > >> all > >> > of the hosts(like PC1 and Pc2)are in the same subnet in the Openflow > >> > tutorial page. > >> > > >> > These tutorial are not suitable to my experiments. > >> > > >> > > >> > > >> > Thank you again. > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > Best regards > >> > > >> > > >> > > >> > yang > >> > 2011-03-10 > >> > ________________________________ > >> > 发件人： kk yap > >> > 发送时间： 2011-03-09 22:52:16 > >> > 收件人： 杨宇 > >> > 抄送： nox-dev > >> > 主题： Re: Re: [nox-dev] different between ofdatapath and dpctl > >> > Hi, > >> > This is because you are trying to add a kernel datapath on a userspace > >> > switch. I do not see this pair of commands being used in the link you > >> > provided ( > >> > http://www.openflow.org/foswiki/bin/view/OpenFlow/Deployment/HOWTO/LabSetup > >> ). > >> > Any reason for doing so? > >> > /var/run/dp0 is the UNIX domain socket to communicate to the switch > >> > with. You need it when you run ofprotocol. And the datapath id is > >> > 004E46324304. The userspace switch supports only one datapath from > >> > what I recall. > >> > Regards > >> > KK > >> > PS>> Please don't drop the mailing list. > >> > On 9 March 2011 06:48, 杨宇 <[email protected]> wrote: > >> >> hello, kk > >> >> thansk for your reply.. > >> >> > >> >> > >> >>> # ./udatapath/ofdatapath --detach punix:/var/run/dp0 -d > >> 004E46324304 > >> >>> -i eth1,eth2 > >> >> This runs the OpenFlow switch. > >> >> > >> >> I think the punix:/var/run/dp0 is the created switch. > >> >> and the 004E46324304 is the datapath , is that true ? > >> >> > >> >> > >> >> ________________________________ > >> >> 发件人： kk yap > >> >> 发送时间： 2011-03-09 22:34:50 > >> >> 收件人： 杨宇 > >> >> 抄送： nox-dev > >> >> 主题： Re: [nox-dev] different between ofdatapath and dpctl > >> >> Hi, > >> >> Comments inline. > >> >> Regards > >> >> KK > >> >> 2011/3/9 杨宇 <[email protected]>: > >> >>> hi, all > >> >>> when I follow the tutorial in the page > >> >>> " > >> > http://www.openflow.org/foswiki/bin/view/OpenFlow/Deployment/HOWTO/LabSetup > >> >>> " > >> >>> there is a command line: > >> >>> # ./udatapath/ofdatapath --detach punix:/var/run/dp0 -d > >> 004E46324304 > >> >>> -i eth1,eth2 > >> >> This runs the OpenFlow switch. > >> >>> Is this same with the command line: > >> >>> ./dpctl adddp nl:0 > >> >> This commandline tool ask the switch you just ran to create a > datapath. > >> >>> > >> >>> what's the difference between this two commands? > >> >>> > >> >>> Thans a lot > >> >>> > >> >>> Best regards. > >> >>> > >> >>> > >> >>> yang > >> >>> _______________________________________________ > >> >>> nox-dev mailing list > >> >>> [email protected] > >> >>> http://noxrepo.org/mailman/listinfo/nox-dev > >> >>> > >> >>> > >> _______________________________________________ > >> nox-dev mailing list > >> [email protected] > >> http://noxrepo.org/mailman/listinfo/nox-dev > >> > > >
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