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 Aaron it helps a lot and thank you for that.

 Unfortunately in my setup there is no router for the management 
 interface since it is much simpler and has two interfaces: one that has 
 an external IP and connects directly to the internet and a second one 
 with internal (management) network that cannot be reached from the 
 outside. In such a case can you recommend a setup or point me at a 
 documentation?

 Thanks a lot again,


 George



 On Wed, 19 Nov 2014 20:39:10 +0000, Aaron Segura wrote:
> When the documentation refers to testing external connectivity from
> the nodes, it does not mean to test connectivity via the External
> Interface, irself.  It means that you should be able to reach the
> external network (Internet) and the other nodes, from each node, via
> the Management Interface.  The Management Interface is how you will
> log in to the nodes via SSH, as well.  The network attached to your
> Management Interface should have a route out to the Internet and
> provide all the connectivity you need to manage the node, install
> software, etc...
>
> Hope that helps!
>
> On Wed Nov 19 2014 at 2:19:07 PM Georgios Dimitrakakis  wrote:
>
>>  First of all let me thank you very much for your clear replies!
>>
>>  Yes! That makes sense indeed for the Virtual Machines!
>>
>>  What about the compute node itself? If I am not wrong at that
>> point of
>>  documentation nova-network hasnt been installed or configured. So
>> how
>>  is it possible the connectivity tests with the external network
>> to be
>>  successful as shown at that point?
>>
>>  Furthermore if someone wants to have direct SSH access to the
>> node from
>>  the external network how is that achieved? In general how does
>> the
>>  physical node itself access the external network?
>>
>>  All the best,
>>
>>  George
>>
>>  On Wed, 19 Nov 2014 14:25:29 +0000, Aaron Segura wrote:
>> > Think of your external interface as if it were a switch. The
>> guests
>> > are plugged in to the switch. They will have IP addresses that
>> allow
>> > them to communicate on the network. The physical interface just
>> ships
>> > packets back and forth between physical and virtual networks, and
>> > doesnt need its own address. Make more sense?
>> >
>> > On Wed, Nov 19, 2014, 07:53 Georgios Dimitrakakis  wrote:
>> >
>> >>  Hello stackers!
>> >>
>> >>  In OpenStack documentation and specifically on Legacy
>> Networking
>> >>
>> >>
>> >
>> >
>>
> 
>  http://docs.openstack.org/juno/install-guide/install/yum/content/ch_basic_environment.html#basics-networking-nova
>> [1]
>> >> [1]
>> >>
>> >>  says clearly that for a two node installation the interface
>> >> dedicated
>> >>  to the external network should not be configured with an IP
>> >> address.
>> >>
>> >>  Is this correct??
>> >>
>> >>  Furthermore at the "Verify Connectivity" part is pinging
>> >> successfully
>> >>  on the external network and my question is how is this
>> happening?
>> >> Does
>> >>  it assume that there is a third interface already connected on
>> >> the
>> >>  external network??
>> >>
>> >>  How is accessing the external network without even configuring
>> >> the
>> >>  interface dedicated at it?? Does it assume that the internal
>> >> network
>> >>  somehow performs a routing??
>> >>
>> >>  Best regards,
>> >>
>> >>  G.
>> >>
>> >> _______________________________________________
>> >> Mailing list:
>> >> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
>> [2] [2]
>> >> Post to     : openstack at lists.openstack.org [3] [3]
>> >> Unsubscribe :
>> >> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
>> [4] [4]
>> >
>> >
>> > Links:
>> > ------
>> > [1]
>> >
>> >
>>
> 
> http://docs.openstack.org/juno/install-guide/install/yum/content/ch_basic_environment.html#basics-networking-nova
>> [5]
>> > [2] http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
>> [6]
>> > [3] mailto:openstack at lists.openstack.org [7]
>> > [4] http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
>> [8]
>> > [5] mailto:giorgis at acmac.uoc.gr [9]
>
>
> Links:
> ------
> [1]
> 
> http://docs.openstack.org/juno/install-guide/install/yum/content/ch_basic_environment.html#basics-networking-nova
> [2] http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
> [3] mailto:openstack at lists.openstack.org
> [4] http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
> [5]
> 
> http://docs.openstack.org/juno/install-guide/install/yum/content/ch_basic_environment.html#basics-networking-nova
> [6] http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
> [7] mailto:openstack at lists.openstack.org
> [8] http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
> [9] mailto:giorgis at acmac.uoc.gr
> [10] mailto:giorgis at acmac.uoc.gr

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