It may be as simple as adding spanning_tree to your commandline.

-- Murphy
On Jun 3, 2012 12:56 PM, "Brandon Heller" <[email protected]> wrote:

> On Sun, Jun 3, 2012 at 5:26 AM, Anthony Salim <
> [email protected]> wrote:
>
>> Hi all,
>>
>> I am creating a topology something like this diagram:
>>
>> h1 --- s1-----s2 ----h2
>>          |        |
>>          |        |
>>          s3----s4
>>
>> my links in mininet is:
>>
>> s1.linkTo(s2)
>> s2.linkTo(s3)
>> s2.linkTo(s4)
>> s4.linkTo(s3)
>
>
>> i have run the mininet and the nox controller but somehow when i tried to
>> ping all, the connection cant get through (its like in the infinite loop),
>> how can i resolve this? Thanks.
>>
>
> Your topology has a loop.  The default nox controller doesn't handle
> loops, and melts down the network.  This problem has nothing to do with
> Mininet, and would happen with hardware switches too.
>
> You can resolve this by enabling spanning tree in NOX or implementing this
> yourself.  Perhaps this is noted in the NOX docs, or someone here can point
> you in the right direction.
>
> -b
>
>
>
>>
>> Regards,
>> Anthony
>>
>
>

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