[Nsi-wg] NML issues

Henrik Thostrup Jensen htj at nordu.net
Wed Sep 25 06:56:36 EDT 2013


On Tue, 24 Sep 2013, John MacAuley wrote:

> There are unidirectional ports within the NML topology that are identified as connected to remote networks,
> however, the vlan ranges associated with them do not match.

I think this is perfectly valid topology.

> An example of this is one of the links between
> Netherlight and UvA:
> 
> urn:ogf:network:netherlight.net:2013:port:a-gole:testbed:uva:1:in  1779-1799
>
> urn:ogf:network:uvalight.net:2013:uvalight-netherlight 1780-1783

It could be that one end was a router (with high flexibility for VLAN 
assignment), and the other end a switch where VLANs are a global 
resources, and hence some of them occupied. We have to consider that at 
some point these might be automatically generated.

> Obviously, I only have four STP's in each network that can form SDP between the networks, however, do the
> remaining 16 STP in Netherlight exist since nothing can ever utilize them?  At the moment I toss these 16
> potential STP on the floor since they provide no value, however, I wouldn't want to violate any unspoken
> rules ;-)

I think this behavior is correct, do the union of the two labels sets for 
demarcations (which is equivalent to dropping them, just another 
abstraction).


     Best regards, Henrik

  Henrik Thostrup Jensen <htj at nordu.net>
  Software Developer, NORDUnet


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