John Vollbrecht wrote:
We have a network with an ethernet interface to a switch. The switch is statically configured to take some VLANS to one endpoint and other VLANS to other networks.
The word *some* and *other* are important here: you are talking about multiplexing multiple channels into a link. We haven't discussed that yet. (I gladly do, but one thing at a time now). I strongly disagree with this ad-hoc solution:
<link id="I2_host2_eth1_link" /> <vlanAvailability>400-800</vlanAvailability>
Because: * the semantic is very technology specific. I rather see a more general model (in this case such as the label concept in GMPLS or multiplexing adaptation in G.805). * the syntax is very ad-hoc. The power of XML is that you can compose properties of object in detail. Why use regexp syntax like "400-800" instead of <range><min>400</min><max>800</max></range>
My question is how one describes a link as a set of VLANS
John, I'll write how we describe adaptations later. That first requires a discussion on what a "layer" is (an OSI layer, technology, or sublayer withing a technology). For now, please see e.g. the mail Jeroen sent to the list recently about how adaptations are done in ITU-T G.805.
Case 2 - Between I2-NY and GEANT-Paris we want to create multiple GE circuits which can be used to create connections between I2 and GEANT. One way to do this seems to be to create a "traffic engineering-link"
According to G.805, a link connection (= TE link above) can be made on a server layer by terminating a network connection on a client layer. Either we simply want to describe that TE link, or we want to describe the terminated and adaptated network connection that creates the TE link. Possibly we want a model were we can do both. How exactly this is described is open. I guess we first need to discuss what a "path" is (I'd say G.805 tandem connection) and what a link is (I'd say G.805 link connection), and also what a layer is. We haven't discussed these concepts so far. So feel free to step in and make suggestions about classes and relations. Regards, Freek