[Nsi-wg] Service Termination Points

[Jerry Sobieski]

Hi John-

Yes.   For NSI I think we can say an STP==endpoint.

I think STPs in the abstract sense may be topological locations other 
than just a port or a VLAN, but for the purposes of NSI v1.0, I think a 
"real STP" is indeed a location in the topology where a connection may 
originate or terminate.

(I note that I used a circular reference in the endpoint definition.  
Apologies.  An Endpoint is the physical topological terminus of a 
connection.)     I do reserve some flexibility in the abstraction 
however.  I think there are ways we can use Service Termination Points 
to indicate larger complexes of topological elements.   If folks are 
intersted I will elaborate, but for now, and to be expedient with 
respect to defining ReserveRequest() parameters, I suggest we accept an 
adequate definition and leave additional refinement to later.

Is this helpful?
Jerry

On 3/12/11 9:57 PM, John MacAuley wrote:
> Jerry,
>
> So based on your definition below is STP == Endpoint Reference from an 
> NSI protocol perspective?
>
> Definitions:
>
> *Service Termination Point*:= 1. An abstract object that represents 
> the ingress or egress point of a connection, or the abstract notion of 
> a location in a topology where a connection could potentially 
> originate or terminate.2. A real point in a topology where a 
> connection can originate or terminate.
>
> *Endpoint *:= In NSI, this is a location within a network that can be 
> used as an endpoint for a connection.
>
> *Endpoint Reference*:= a two-tuple consisting of a {<network name>, 
> <endpoint name>} .An “endpoint reference” is this tuple, the 
> “endpoint” itself is the topological location it identifies.
>
>  John.
>
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