Jeroen, How in NML would I model the ability for a network to do VLAN swapping as the connection traverses the network? Would I assume it can't and look for indication it can, or do I assume it can and look for indication it can't? Thanks, John.
Hi, On 24 Sep 2013, at 04:42, John MacAuley <john.macauley@surfnet.nl> wrote:
How in NML would I model the ability for a network to do VLAN swapping as the connection traverses the network? Would I assume it can't and look for indication it can, or do I assume it can and look for indication it can't?
The way to express this in NML is in the SwitchingService element, which can have an attribute "labelSwapping", which can be true or false, and is defined to be false by default. Ports and PortGroups can be related to SwitchingService objects by using the hasInboundPort and hasOutboundPort relationships. Jeroen.
On Tue, 24 Sep 2013, Jeroen van der Ham wrote:
On 24 Sep 2013, at 04:42, John MacAuley <john.macauley@surfnet.nl> wrote:
How in NML would I model the ability for a network to do VLAN swapping as the connection traverses the network? Would I assume it can't and look for indication it can, or do I assume it can and look for indication it can't?
The way to express this in NML is in the SwitchingService element, which can have an attribute "labelSwapping", which can be true or false, and is defined to be false by default.
Do you think a short explanation and example could be added in the "Network Service Interface Topology Representation" document. I suspect most NSI implementors will not read the NML spec. Best regards, Henrik Henrik Thostrup Jensen <htj at nordu.net> Software Developer, NORDUnet
On 24 Sep 2013, at 11:59, Henrik Thostrup Jensen <htj@nordu.net> wrote:
On Tue, 24 Sep 2013, Jeroen van der Ham wrote:
On 24 Sep 2013, at 04:42, John MacAuley <john.macauley@surfnet.nl> wrote:
How in NML would I model the ability for a network to do VLAN swapping as the connection traverses the network? Would I assume it can't and look for indication it can, or do I assume it can and look for indication it can't?
The way to express this in NML is in the SwitchingService element, which can have an attribute "labelSwapping", which can be true or false, and is defined to be false by default.
Do you think a short explanation and example could be added in the "Network Service Interface Topology Representation" document.
I suspect most NSI implementors will not read the NML spec.
Will do, probably tomorrow. Jeroen.
Hi, On 24 Sep 2013, at 11:59, Henrik Thostrup Jensen <htj@nordu.net> wrote:
On Tue, 24 Sep 2013, Jeroen van der Ham wrote:
On 24 Sep 2013, at 04:42, John MacAuley <john.macauley@surfnet.nl> wrote:
How in NML would I model the ability for a network to do VLAN swapping as the connection traverses the network? Would I assume it can't and look for indication it can, or do I assume it can and look for indication it can't?
The way to express this in NML is in the SwitchingService element, which can have an attribute "labelSwapping", which can be true or false, and is defined to be false by default.
Do you think a short explanation and example could be added in the "Network Service Interface Topology Representation" document.
I suspect most NSI implementors will not read the NML spec.
I've looked a bit more into this, and the NML base document already has a good example of a SwitchingService on page 41. To add a labelswapping capability just add an attribute labelSwapping="true" to line 16 of that example. This is completely covered by the NML spec, but I guess it could be added to NSI as an informative example. would that be helpful? Jeroen.
On Wed, 25 Sep 2013, Jeroen van der Ham wrote:
I've looked a bit more into this, and the NML base document already has a good example of a SwitchingService on page 41. To add a labelswapping capability just add an attribute labelSwapping="true" to line 16 of that example.
Maybe just a reference to the section would be fine. The text "swap" does currently not appear in the NSI Topology Representation document, which is probably not ideal, as it is an important topic.
This is completely covered by the NML spec, but I guess it could be added to NSI as an informative example. would that be helpful?
I think it should definitely be in the example, and it would indeed be helpful. Best regards, Henrik Henrik Thostrup Jensen <htj at nordu.net> Software Developer, NORDUnet
participants (3)
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Henrik Thostrup Jensen -
Jeroen van der Ham -
John MacAuley