[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [RE] Layer One VPNs - sorry for the previous email



Hi, Dimitri

Thank you for your comments. And I am sorry for late response.

[snipped]

- there is the issue of the "PE-PE virtual links" and in case of
"Per VPN Peer model" more details should be provided in order to
assess whether existing GMPLS mechanisms are sufficient (from
that perspective details about the following sentence might be
of interest because it seems you took this as initial working
assumption "there is currently no leakage of routing information
across the PE to CE boundary.")

Agree. Providing more details about service requirements may be helpful ? Functional requirements are also important, but before going that in details, more clear service level requirements may be useful.

do you plan to deliver those as part of the user community or do you expect this input to come from SG13 - or both - ? just to know about the timeframe we may expect here since there are very interesting issues you're introducing with the above approaches

Understood. I think this requires further discussion. I would personally think joint collaboration between IETF and SG13 would be a good approach. Anyway, a simple step further at this point could be to enhance the current service level requirements according to all material produced in SG13. We (authors of the L1VPN framework draft) are happy to provide such text for the next version of the draft. Inputs and comments would be also appreciated.



Concerning the initial working assumption you mentioned, we started from the most acknowledged model for the service interface, that is the UNI. That is why we put above text.

so you started with a signaling interface, and then try to build on top of it the necessary pieces


- i would suggest to conclude the document with the expected
delta requirement from gmpls perspective (this would help in
assessing what's expected in terms of protocol for the next
step(s))

Okay, if CCAMP is going to work on the L1 VPN, I agree delta requirement would be an important step.
Do you have anything in your mind ?

try to collect all the sentences that are part of the present document that either implicitly or explicitly determine a feature to be covered
list them in terms of signaling and routing, i think we would gain a lot of precious time in having such conclusion in case decision to work on solution is accepted

Thanks. Yes, as already said, delta requirements will be certainly useful. Having a good understanding of the service and architecture needs is beneficial to drive later the discussion on protocols in a comprehensive way (how protocols and mechanisms fit the service and the architecture).


[snipped]

Any comments are appreciated.

Best regards,


----- Tomonori TAKEDA NTT Network Service Systems Lab. Phone: +81-422-59-7434