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[mininet-discuss] Custom topology - Ping: network is unreachable

Felipe Alencar contato at felipealencar.net
Thu Jan 29 06:07:53 PST 2015


Hi Chiara, first thanks for your time in helping me with this.

Now, my Mininet topology is managed by a POX controller running a
l2_switching module enabled. Is it enough?

Em quinta-feira, 29 de janeiro de 2015, Chiara Contoli <
chiara.contoli at gmail.com> escreveu:

> Hi Felipe and Mininet community,
> would you mind provide more details, for example, are you using a custom
> controller or the default controller?
>
> h1 and h2 are connected to the same network, that's why they're able to
> reach each others; h3 is connected to another network, so if you want to
> reach h3 from h1 or h2, you need a router; hosts should have a default
> gateway, or specific entries in the routing table, so that they are able to
> reach hosts in other networks.
>
> Anyway, in my opinion there are different approach with which you are able
> to reach your goal.
>
> Best regards,
>
> Chiara
> Il giorno 29/gen/2015, alle ore 02:43, Felipe Alencar ha scritto:
>
> Hi everyone,
>
> I'm trying to implement the following custom topology:
>
>                +------------+
>             +--+controller c+--+
>             |  +------------+  |
>             |                  |
>       +-----+---+        +-----+---+
>    +--+switch s1+--+-----+switch s2+----+
>    |  +---------+--+     +---------+    |
>    |               |                    |
> +--+-----+   +-----+--+           +-----+-----+
> | host h1|   |host h2 |           | host h3   |
> |10.0.0.1|   |10.0.0.2|           |192.168.1.1|
> +--------+   +--------+           +-----------+
>
>
> But I don't understand why the host h1 can't ping host h3 with the defined
> IPs:
>
> mininet> h1 ping h3
> connect: Network is unreachable
>
> However, if I set host h3 to 10.0.1.2:
>
> mininet> h1 ping h3
> PING 10.0.1.2 (10.0.1.2) 56(84) bytes of data.
> 64 bytes from 10.0.1.2: icmp_req=1 ttl=64 time=22.1 ms
> 64 bytes from 10.0.1.2: icmp_req=2 ttl=64 time=0.256 ms
> 64 bytes from 10.0.1.2: icmp_req=3 ttl=64 time=0.063 ms
>
> Someone could help me in it? Thank you guys!
>
> --
> Felipe *A. *Lopes
> Master's Candidate in Computer Science at the Informatics Center of
> Federal University of Pernambuco (UFPE)
> BSc in Information Systems at the Federal Institute of Alagoas (IFAL)
>
> (82) 9992-0023
> http://felipealencar.net <http://www.felipealencar.net/>
> http://lattes.cnpq.br/6490167896355223
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>
>

-- 
Felipe *A. *Lopes
Master's Candidate in Computer Science at the Informatics Center of Federal
University of Pernambuco (UFPE)
BSc in Information Systems at the Federal Institute of Alagoas (IFAL)

(82) 9992-0023
http://felipealencar.net <http://www.felipealencar.net/>
http://lattes.cnpq.br/6490167896355223
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