I agree with Sebastian. This discussion is about IP addresses, not
abstract services/applications. If an application runs on a box with
multiple interfaces, and hence has multiple IP addresses, then those IP
addresses may be in different PIDs, with different costs. A client can use
the cost map to select one of the application's IP addresses.
But at any given time, each of the application's IP addresses is in one,
and only one, PID.
The concept of an application as an entity with a number of different IP
addresses, possibly with different costs, is interesting, but so far is
beyond the scope of ALTO. BTW, that also raises the question of whether
those N addresses go to the same host, or whether they go to different
hosts that cooperate to provide a consistent service. And the next
question is whether a client would know -- or care -- whether an
application is distributed over a number of cooperating hosts.
- Wendy Roome
On 10/28/2013 11:48, "Sebastian Kiesel" <[email protected]> wrote:
>On Mon, Oct 28, 2013 at 03:08:51PM +0000, Reinaldo Penno (repenno) wrote:
>> [RP] And endpoint is an application, not an IP. So, an endpoint can be
>>in many PIDs.
>
>True in general. but for that we probably would have to define a new
>endpoint type. This discussion is about the type IP prefix.
>
>Sebastian
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