[Nml-wg] More UML....

[Aaron Brown]

Jeroen van der Ham wrote:
>>> * A _Port_ MAY have a _source_ relation with up to two _Unidirectional 
>>> Links_.
>>> * A _Port_ MAY have a _sink_ relation with up to two _Unidirectional 
>>> Links_.
>>>       
>> Does this mean that a port might be a sink for two unidirectional links? 
>> If so, under what circumstances could it occur that a port could be a 
>> sink for more than one link, but not more than two?
>>     
>
> A Port typically has two uni-directional links to another device, and 
> two uni-directional crossconnects (crossconnects are also links). So 
> then it has two source relations and two sink relations.
>   
Is a cross-connect a subclass of link?
> Freek also brought up an example where a SONET switch with an Ethernet 
> interface. If you just look at the Ethernet Layer, this would appear as 
> a Port with links ("actual link links") to two devices.
>   
What two devices does it have an actual link to? Maybe i'm being dense?

Cheers,
Aaron