[Nsi-wg] Encoding & Labeltype

[John MacAuley]

I was asking to determine optionality of attributes when labelSwapping="false".

The default behaviour is that if there is not a SwitchingService for a specific label type then only identical labels can be connected.  I think we need to extend that to the pair <encoding type, label type> must be identical otherwise an adaptation would be required to connect them.

Is that a bridge too far?

John

On 2013-11-01, at 10:10 AM, Henrik Thostrup Jensen <htj at nordu.net> wrote:

> On Fri, 1 Nov 2013, John MacAuley wrote:
> 
>> Is there a valid scenario where we would define a switching service and not have a label value specified?
> 
> I assume you mean label type and not value.
> 
> label type  = http://schemas.ogf.org/nml/2012/10/ethernet
> label value = 1780
> 
> (AFAIK)
> 
> But I guess most switching services would have a label type defined.
> 
> However I can up with a pedantic example: If you want to show, that you can NOT switch any labels an encoding, you could have a switching service that has an encoding and labelSwapping="false".
> 
> This also raises a question regarding the default behaviour in NML. Can all ports (of the same encoding) be connected by default (this is what we have now), or should there be a switching service explicitely stating which ports can be cross-connected?
> 
> 
>    Best regards, Henrik
> 
> Henrik Thostrup Jensen <htj at nordu.net>
> Software Developer, NORDUnet
> 
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