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[mininet-discuss] mininet-discuss Digest, Vol 49, Issue 57

Krishnakumar Velappan krishnakumar.v at srec.ac.in
Tue Apr 1 06:37:23 PDT 2014


Respected sir/madam
       send me routing concepts and code for practice in mininet.




On Sun, Mar 30, 2014 at 12:40 AM, <
mininet-discuss-request at lists.stanford.edu> wrote:

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> Today's Topics:
>
>    1. Re: pox install and with VND (Murphy McCauley)
>    2. Re: Scripting Issues with addLink (Ken Jett (kjett))
>    3. (no subject) (Dame Lyngdoh)
>    4. Re: (no subject) (Sukhbir Singh)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 28 Mar 2014 22:56:29 -0700
> From: Murphy McCauley <murphy.mccauley at gmail.com>
> To: ??? <a1991703 at gmail.com>
> Cc: mininet-discuss at lists.stanford.edu
> Subject: Re: [mininet-discuss] pox install and with VND
> Message-ID: <DA6B3953-F95E-49BC-A16D-E3691C9133D6 at gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Sorry -- this is really more POX and VND than Mininet related, but I
> wanted to quickly summarize some off-list activity in case anyone was
> curious or finds this thread in a search...
>
> I wrote some new boilerplate for VND's POX code generation along the lines
> of what I suggested.  I sent it along to Ramon Fontes, who has integrated
> it, so this all works better now.
>
> -- Murphy
>
> (Further discussion on this topic, if any, should probably go to...
> openflow-discuss?  Or maybe pox-dev?)
>
> On Mar 26, 2014, at 12:08 AM, Murphy McCauley <murphy.mccauley at gmail.com>
> wrote:
>
> > The code generated by VND just waits for 15 seconds and then tries to
> install the table entries.  In your case, the switches haven't connected by
> then.
> >
> > Assuming that you're actually running Mininet using the VND-generated
> Mininet script, this is probably because you're using POX dart and the VND
> code wasn't generated with it in mind.  The video is using betta.  It'd
> probably also work with carp.  You could consider downgrading.
> >
> > Unlike previous versions, dart doesn't (currently?) always load the
> openflow component.  It does try to load it on demand ("About the OpenFlow
> Component's Initialization" in the manual).  Unfortunately, the
> VND-generated code doesn't trigger the demand-loading code.
> >
> > Long story short: to get it working with dart, you might try just adding
> the openflow component to your commandline explicitly:
> > ./pox.py openflow controllerScript5906
> >
> > (Ideally, VND's code should be modified to monitor ConnectionUp events
> from switches and install entries when they're connected rather than simply
> waiting for 15 seconds.  This would work with betta and carp too and should
> trigger demand-loading of the openflow component in dart.)
> >
> > -- Murphy
> >
> > On Mar 25, 2014, at 11:37 PM, ??? <a1991703 at gmail.com> wrote:
> >
> >> HI ALL
> >> I TRY TO USE VND with this vedio(
> http://www.ramonfontes.com/visual-network-description-pox-controller/)
> >>
> >> i do the same step with vedio but when i want to open my pox to
> controller my mininet it got error like this:
> >>
> >> root at ethan-To-be-filled-by-O-E-M:/home/ethan/pox# ./pox.py
> controllerScript5906
> >> POX 0.3.0 (dart) / Copyright 2011-2014 James McCauley, et al.
> >> INFO:controllerScript5906:*** Starting... ***
> >> INFO:controllerScript5906:*** Waiting for switches to connect.. ***
> >> INFO:core:POX 0.3.0 (dart) is up.
> >> INFO:controllerScript5906:    *** Installing static flows... ***
> >> WARNING:openflow:Couldn't send to 00-00-00-00-00-05 because we're not
> connected to it!
> >> WARNING:openflow:Couldn't send to 00-00-00-00-00-05 because we're not
> connected to it!
> >> WARNING:openflow:Couldn't send to 00-00-00-00-00-06 because we're not
> connected to it!
> >> WARNING:openflow:Couldn't send to 00-00-00-00-00-06 because we're not
> connected to it!
> >> WARNING:openflow:Couldn't send to 00-00-00-00-00-05 because we're not
> connected to it!
> >> WARNING:openflow:Couldn't send to 00-00-00-00-00-05 because we're not
> connected to it!
> >> WARNING:openflow:Couldn't send to 00-00-00-00-00-06 because we're not
> connected to it!
> >> WARNING:openflow:Couldn't send to 00-00-00-00-00-06 because we're not
> connected to it!
> >> INFO:controllerScript5906:    *** Static flows installed. ***
> >>
> >>
> >> could some one tell me what happen?
> >> my controller does not install correct?
> >> THANKS
> >> ETHAN
> >>
> >>
> >> _______________________________________________
> >> mininet-discuss mailing list
> >> mininet-discuss at lists.stanford.edu
> >> https://mailman.stanford.edu/mailman/listinfo/mininet-discuss
> >
>
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> ------------------------------
>
> Message: 2
> Date: Sat, 29 Mar 2014 14:11:30 +0000
> From: "Ken Jett (kjett)" <kjett at cisco.com>
> To: Sukhbir Singh <sukhbir.in at gmail.com>
> Cc: "mininet-discuss at lists.stanford.edu"
>         <mininet-discuss at lists.stanford.edu>
> Subject: Re: [mininet-discuss] Scripting Issues with addLink
> Message-ID: <CF5C3717.19CE%kjett at cisco.com>
> Content-Type: text/plain; charset="us-ascii"
>
> Perfect!  Thanks for your help, Sukhbir.
>
> On 3/28/14, 12:39 PM, "Sukhbir Singh" <sukhbir.in at gmail.com> wrote:
>
> >>     for a, b in links:
> >>         net.addLink(a, b )
> >
> >"a" and "b" are strings here, when we should be passing a host or a
> >switch object to addLink(). Try this:
> >
> >for a, b in links:
> >    a = net.get(a)
> >    b = net.get(b)
> >    net.addLink(a, b )
> >
> >--
> >Sukhbir
>
>
>
> ------------------------------
>
> Message: 3
> Date: Sat, 29 Mar 2014 21:27:49 +0530
> From: Dame Lyngdoh <lyngdoh.dame at gmail.com>
> To: Mininet <mininet-discuss at lists.stanford.edu>
> Subject: [mininet-discuss] (no subject)
> Message-ID:
>         <CAFu52W8V5CAnGGErv1=
> 9VfcaaboCP-a1PK-PODN5M7+cO+SQ3Q at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> How can I change the default IP address of a node/host using *addHost()*?
> What is the parameter for that?
>
> --
>
> *D. L. Lyngdoh*
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> ------------------------------
>
> Message: 4
> Date: Sat, 29 Mar 2014 12:09:08 -0400
> From: Sukhbir Singh <sukhbir.in at gmail.com>
> To: Dame Lyngdoh <lyngdoh.dame at gmail.com>
> Cc: Mininet <mininet-discuss at lists.stanford.edu>
> Subject: Re: [mininet-discuss] (no subject)
> Message-ID:
>         <
> CADtjFvV9eGhthsirN1qe-GQTaxML613YG_MvK5MiwoMLqrnkiw at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> > How can I change the default IP address of a node/host using addHost()?
> > What is the parameter for that?
>
> Look at setIP() in the documentation/code.
>
> --
> Sukhbir
>
>
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> End of mininet-discuss Digest, Vol 49, Issue 57
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