[Nml-wg] URNs with query part

[Freek Dijkstra]

Let me forward this to the NML-WG.

Jeroen originally brought up the query part, and I commented on it
off-list (in-person even). Jeroen is currently on holiday, but can
probably comment when he returns.

(I removed some spurious quotations for readability).

Freek

-------- Original Message --------
Subject: 	Re: [Nsi-wg] Syntax of NML endpoints in a connection request
(was: Determining the Network of an STP)
Date: 	Fri, 6 Jul 2012 09:36:28 -0400
From: 	Aaron Brown <aaron at internet2.edu>
To: 	Freek Dijkstra <Freek.Dijkstra at sara.nl>
CC: 	John MacAuley <john.macauley at surfnet.nl>,
        NSI WG <nsi-wg at ogf.org>

On Jul 6, 2012, at 7:14 AM, Freek Dijkstra wrote:

[...]
>>       <source>urn:ogf:network:nordu.net:2012:onsala-tx?vlan=1791</source>
>>       <sink>urn:ogf:network:nordu.net:2012:onsala-rx?vlan=1791</sink>
[...]

The query stuff may have just been shorthand, but in case it's not,
overloading the URN to include a query parameter seems a bad idea to me.
I'd rather see something like (all in short-hand):

<source>
    <port>
        <port_group
idRef="urn:ogf:network:sne.science.uva.nl:2012:lighthouse-egress" />
        <vlan>1791</vlan>
    </port>
</source>

For the "connect any vlan", you could presumably leave the vlan
parameter out:

<source>
    <port>
        <port_group
idRef="urn:ogf:network:sne.science.uva.nl:2012:lighthouse-egress" />
    </port>
</source>

You could presumably override the set of 'any' VLANs by doing something
like:

<source>
    <port>
        <port_group
idRef="urn:ogf:network:sne.science.uva.nl:2012:lighthouse-egress">
             <vlans>1790-1800</vlans>
        </port_group>
    </port>
</source>

I'm not positive what the "connect ALL vlans" would look like because
I'm not sure what the result of that operation would be. i.e. would it
be a port with multiple VLANs, or would it be a PortGroup that functions
as a port, or would it be a ridiculous number of ports (depending on how
many VLANs are in the PortGroup)?

Cheers,
Aaron