Aaron Brown wrote:
Both a network and a link connection seem to be 'connections between two points'. You say that in one case it's terminated and in one case it's not. Is 'terminated' a property of the link or is it a property of the connection point
It's a 'property' of the connection point -- basically it says that connection is terminated there (these connection points are end-points for a certain layer and are called "termination connection points" or "TCP").
A tandem connection is a network or link connection that spans multiple connections? How does it differ from a network connection which in figure 1 also spans multiple connections?
A network connection is a special case of a tandem connection: it is a tandem connection between termin
What differentiates a link whose contents gets demux'd to an higher layer vs. a link whose contents get routed at the same layer?
I can't answer the question if I were to follow G.805 to the letter. To be annoyingly precise (which G805 is): First: in G805 the term "link" is only used for the physical wire/fibre. What we are talking about is a "transport entity across a link", which is called a "link connection". Second: link connections are never routed or switched. Easiest is to compare link connections and tandem connection with graph theory: - link connection = single edge - tandem connection = path (a sequence of edges) you seem to talk about tandem connections (paths) rather than about link connections (links). So I take it that you mean to ask:
What differentiates a tandem connection whose contents gets demux'd to an higher layer vs. a tandem connection whose contents get routed at the same layer?
The difference is that a tandem connection that gets demuxed to a higher layer must thus be terminated at the lower layer. Thus, that is a terminated tandem connection, which is called a "network connection". (to be even more pedantically correct: the end-to-end connection before termination is called a "network connection", while after termination it is called a "trail")
A subnetwork connection is a link or network connection that you view as opaque, correct? I.e. I've got a connection between these two points, i either don't know or don't care how it's constructed. If so, would "opaque connection" be a more clear description?
Sure -- I'm certainly not saying that I'm a big fan of every word G805 come up with. However, there is a slight difference: a subnetwork connection is a opaque connections *through a given network*. To recap: * link connection is a direct (or atomic) connection on a layer (think: link). * tandem connection is a sequence of link connections (think: a path or a segment of a path) * network connection is a tandem connection that will be terminated (think: a end-to-end path) And for the real G.805-adepts: * trail is a terminated network connection (think: end-to-end path) Regards, Freek -- Disclaimer: This is an e-mail message. Use your own judgment about its value. If you do not have such common sense (e.g. you are a lawyer) or like to see crap like warranties, intended-audience or as-is statements, then the following applies: you do not understand the concept of satire and are not allowed to read this e-mail.