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[mininet-discuss] To solve loop in topology using pox

Bob Lantz rlantz at cs.stanford.edu
Sat Dec 7 21:00:17 PST 2013


Not a broken link but rather the wrong domain (should be wordpress.com) - also note that the FAQ is a wiki so anyone can fix it.

On Dec 7, 2013, at 7:09 PM, Gary Brown <uvugdbrown at gmail.com> wrote:

> FYI, this link (http://reproducingnetworkresearch.blogspot.com/) in the FAQ entry you referenced is broken; the blog appears to no longer exist.  The only link left in the FAQ, RipL-POX, still works.
> 
> Gary
> 
> 
> On Sat, Dec 7, 2013 at 6:47 PM, Bob Lantz <rlantz at cs.stanford.edu> wrote:
> As Murphy noted, POX has its own mailing list and forum. ;-p
> 
> However, you may want to look at - and update - this FAQ entry:
> https://github.com/mininet/mininet/wiki/FAQ#wiki-ethernet-loops
> 
> You could also look at Floodlight's IP forwarding - I have heard rumors that it works with some networks with loops in them.
> 
> 
> On Dec 7, 2013, at 11:33 AM, Murphy McCauley <murphy.mccauley at gmail.com> wrote:
> 
> > This isn't the case.  l3_learning is more or less a learning switch -- the addresses are L3 but are not meaningful -- and so still has the problem of floods leading to loops.  If I recall, it's compatible with the spanning_tree module, though.
> >
> > I believe topo_proactive shouldn't have loop problems (but also doesn't support broadcast between switches).
> >
> > -- Murphy
> >
> > On Dec 7, 2013, at 2:20 AM, Silvia Fichera <fichera.sil at gmail.com> wrote:
> >
> >> I've got the same problem and I'm using the l3_learning of pox... I supposed that a level 3 doesn't need spanning tree...
> >>
> >>
> >> 2013/12/6 Murphy McCauley <murphy.mccauley at gmail.com>
> >> Does the forwarding component you're using handle loops?  If not, that may be your problem.  POX comes with a spanning_tree component which can fix this automatically in some cases.  See the POX manual.
> >>
> >> -- Murphy
> >>
> >>
> >> P.S., If you weren't aware, POX has its own mailing list and web forum.
> >>
> >> On Dec 6, 2013, at 1:18 AM, khushboo chhaya <chhaya.khushboo at gmail.com> wrote:
> >>
> >>> Hi
> >>> I am creating a topology in which loop is there using pox as a controller but it is not pinging to any host so please tell how can I solve loop problem in my topology.
> >>> _______________________________________________
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> >>
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> >>
> >>
> >>
> >> --
> >> Silvia Fichera
> >
> > _______________________________________________
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> > https://mailman.stanford.edu/mailman/listinfo/mininet-discuss
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> 
> 
> -- 
> Gary D. Brown

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