[Nml-wg] Fwd: Two proposals for Adaptation

[Jason Zurawski]

I believe this makes the most sense as a service, I will add this 
comment into the ticket as well.

-jason

On 5/10/12 6:05 AM, thus spake Freek Dijkstra:
> My apologies. The XML for example #2 in my previous mail was wrong.
>
>
> Here are two proposals how to describe adaptation (encoding of a client
> layer Port in a server layer Port).
>
>
> Option 1: As adaptation service. (similar to a switching service)
> -----------------------------------------------------------------
> egress server layer Port --(hasService)-->  adaptation Service
> adaptation Service --(providesPort)-->  egress client layer Port*
>
> ingress server layer Port --(hasService)-->  de-adaptation Service
> de-adaptation Service --(providesPort)-->  ingress client layer Port*
>
>
> Option 2: As Adaptation or DeAdaptation object (similar to a Link)
> ------------------------------------------------------------------
> egress client layer Port* --(isSource)-->  Adaptation
> egress server layer Port --(isSink)-->  Adaptation
>
> ingress server layer Port --(isSource)-->  DeAdaptation
> ingress client layer Port* --(isSink)-->  DeAdaptation
>
>
> *Port or PortGroup, if we decide to allow descriptions of multiple Ports
> -eg. all VLANs- as a group for efficiency purposes.
>
> Option 1 is more natural choice for dynamic adaptations, e.g. VLANs in
> Ethernet.
> Option 2 is more natural choice for static adaptations, e.g. Ethernet
> over a wavelength.
>
> We can even allow both: option 1 for dynamic adaptations, and option 2
> for static adaptations. But I rather just pick one of the two.
>
> Please let me know your preference, or alternative proposal.
> Feedback can also be made at https://forge.ogf.org/sf/go/artf6514
>
>
> XML examples follows. Sorry for the quoting, otherwise my mail client
> would have wrapped the lines. If you like the raw XML, you can get it at
> https://forge.ogf.org/svn/repos/nml-examples/201205-adaptation/adaptation.xml
> and are copied below.
>
>
>
> XML example option 1 (as Service)
> ---------------------------------
> (example taken from nml-examples/201109-switchservice/2vlans_option2.xml)
>
> egress server layer Port --(hasService)-->  adaptation Service
> adaptation Service --(providesPort)-->  egress client layer Port
>
> ingress server layer Port --(hasService)-->  de-adaptation Service
> de-adaptation Service --(providesPort)-->  ingress client layer Port
>
> Adaptation type (here: 802.1Q) is described with a nml:adptationFunction
> XML element.
>
>>
>>    <!-- ATLA ge-6/0/0 egress server layer Port -->
>>    <nml:Port id="urn:ogf:network:internet2.edu:rtr.atla.net:ge-6-0-0_out">
>>      <nml:name>ge-6/0/0 out</nml:name>
>>      <nml:capacity units="bps">10000000000</nml:capacity>
>>      <nml:Relation type="hasService">
>>        <nml:Service idRef="urn:ogf:network:internet2.edu:rtr.atla.net:ge-6-0-0_out_adaptation" />
>>      </nml:Relation>
>>    </nml:Port>
>>
>>    <!-- ATLA ge-6/0/0 adaptation Service -->
>>    <nml:Service type="adaptation" id="urn:ogf:network:internet2.edu:rtr.atla.net:ge-6-0-0_out_adaptation">
>>      <nml:name>VLAN adaptation service</nml:name>
>>      <nml:adptationFunction>IEEE-802.1q</nml:adptationFunction>
>>      <nml:Relation type="providesPort">
>>        <nml:Port idRef="urn:ogf:network:internet2.edu:rtr.atla.net:ge-6-0-0.42_out" />
>>      </nml:Relation>
>>    </nml:Service>
>>
>>    <!-- ATLA ge-6/0/0 ingress server layer Port -->
>>    <nml:Port id="urn:ogf:network:internet2.edu:rtr.atla.net:ge-6-0-0_in">
>>      <nml:name>ge-6/0/0 in</nml:name>
>>      <nml:capacity units="bps">10000000000</nml:capacity>
>>      <nml:Relation type="hasService">
>>        <nml:Service idRef="urn:ogf:network:internet2.edu:rtr.atla.net:ge-6-0-0_in_deadaptation" />
>>      </nml:Relation>
>>    </nml:Port>
>>
>>    <!-- ATLA ge-6/0/0 Deaptation Service -->
>>    <nml:Service type="deadaptation" id="urn:ogf:network:internet2.edu:rtr.atla.net:ge-6-0-0_in_deadaptation">
>>      <nml:name>deadaptation service</nml:name>
>>      <nml:adptationFunction>IEEE-802.1q</nml:adptationFunction>
>>      <nml:Relation type="providesPort">
>>        <nml:Port idRef="urn:ogf:network:internet2.edu:rtr.atla.net:ge-6-0-0.42_in" />
>>      </nml:Relation>
>>    </nml:Service>
>
>
>
> XML example option 2 (as Adaptation object)
> -------------------------------------------
> egress client layer Port --(isSource)-->  Adaptation
> egress server layer Port --(isSink)-->  Adaptation
>
> ingress server layer Port --(isSource)-->  DeAdaptation
> ingress client layer Port --(isSink)-->  DeAdaptation
>
> Adaptation type (here: 802.1Q) is described with a type XML attribute.
>
>>    <!-- ATLA ge-6/0/0 egress server layer Port -->
>>    <nml:Port id="urn:ogf:network:internet2.edu:rtr.atla.net:ge-6-0-0_out">
>>      <nml:name>ge-6/0/0 out</nml:name>
>>      <nml:capacity units="bps">10000000000</nml:capacity>
>>      <nml:Relation type="isSink">
>>        <nml:Adaptation idRef="urn:ogf:network:internet2.edu:rtr.atla.net:ge-6-0-0_out_adaptation" />
>>      </nml:Relation>
>>    </nml:Port>
>>
>>    <!-- ATLA ge-6/0/0 VLAN 42 egress client layer Port -->
>>    <nml:Port id="urn:ogf:network:internet2.edu:rtr.atla.net:ge-6-0-0.42_out">
>>      <nml:Relation type="isSource">
>>        <nml:Adaptation idRef="urn:ogf:network:internet2.edu:rtr.atla.net:ge-6-0-0_out_adaptation" />
>>      </nml:Relation>
>>    </nml:Port>
>>
>>    <!-- ATLA ge-6/0/0 adaptation Service -->
>>    <nml:Adaptation type="IEEE-802.1q" id="urn:ogf:network:internet2.edu:rtr.atla.net:ge-6-0-0_out_adaptation">
>>      <nml:name>VLAN adaptation service</nml:name>
>>    </nml:Adaptation>
>>
>>    <!-- ATLA ge-6/0/0 ingress server layer Port -->
>>    <nml:Port id="urn:ogf:network:internet2.edu:rtr.atla.net:ge-6-0-0_in">
>>      <nml:name>ge-6/0/0 in</nml:name>
>>      <nml:capacity units="bps">10000000000</nml:capacity>
>>      <nml:Relation type="isSource">
>>        <nml:DeAdaptation idRef="urn:ogf:network:internet2.edu:rtr.atla.net:ge-6-0-0_in_deadaptation" />
>>      </nml:Relation>
>>    </nml:Port>
>>
>>    <!-- ATLA ge-6/0/0 VLAN 42 ingress client layer Port -->
>>    <nml:Port id="urn:ogf:network:internet2.edu:rtr.atla.net:ge-6-0-0.42_in">
>>      <nml:Relation type="isSink">
>>        <nml:DeAdaptation idRef="urn:ogf:network:internet2.edu:rtr.atla.net:ge-6-0-0_in_deadaptation" />
>>      </nml:Relation>
>>    </nml:Port>
>>
>>    <!-- ATLA ge-6/0/0 Deaptation Service -->
>>    <nml:DeAdaptation type="IEEE-802.1q" id="urn:ogf:network:internet2.edu:rtr.atla.net:ge-6-0-0_in_deadaptation">
>>      <nml:name>deadaptation service</nml:name>
>>    </nml:DeAdaptation>
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