[Nsi-wg] Pathfinding and Service (a new topology suggestion)
John MacAuley
macauley at es.net
Fri Feb 27 10:14:24 EST 2015
Henrik,
I was talking with Chin about the following example and his understanding was different than mine. I think I have it wrong but wanted to check.
For the link "urn:ogf:network:aruba:bonaire-otn" my understanding was from Bonaire I could use EVTS to reach Curacao with a cost of 2, and I could use OTN to reach Bonaire (back to me) with a cost of 1.
Chin indicated that the type of service used on the link "urn:ogf:network:aruba:bonaire-otn" is not described as it is know between the two ends of the link (implicit), and what the entries indicate is you can reach Curacao with EVTS through Aruba at a cost of 2. So if the implicit service on link "urn:ogf:network:aruba:bonaire-otn" is OTN, then adaptation will occur somewhere to get you to the "EVTS" service in Curacao.
So in Chin's explanation a single service type is on the link "urn:ogf:network:aruba:bonaire-otn" and the service adaptations are described. In mine the services on the link are described but adaptation is not.
Could you please clarify?
Thanks,
John
On 2015-02-05, at 9:59 AM, Henrik Thostrup Jensen <htj at nordu.net> wrote:
> <Network id="urn:ogf:network:aruba" version="123">
> <Name>Aruba</Name>
> <Link id="urn:ogf:network:aruba:bonaire-otn" demarcation="urn:ogf:network:bonaire:aruba-otn">
> <Name>Bonaire OTN Link</Name>
> <Service type="EVTS">
> <ReachableNetwork id="urn:ogf:network:bonaire" distance="1" />
> <ReachableNetwork id="urn:ogf:network:curacao" distance="2" />
> </Service>
> <Service type="OTN">
> <ReachableNetwork id="urn:ogf:network:bonaire" distance="1" />
> </Service>
> </Link>
> <Link id="urn:ogf:network:aruba:dominica-eth" demarcation="urn:ogf:network:dominica:aruba-eth">
> <Name>Dominica Ethernet Link</Name>
> <ServiceTransit type="EVTS" />
> </Link>
> <Service type="SwitchingService" />
> </Network>
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