Re: [Pce] PCE WG LC for draft-ietf-pce-pcep-extension-for-pce-controller

Hi，Dhruv, Julien and authors of this draft:

I reviewed this draft and had the following comments for its WG LC:

1. Generally speaking, I support the direction that stated also in the draft
as "A PCE-based central controller (PCECC) can simplify the processing of a
distributed control plane by blending it with elements of SDN and

   without necessarily completely replacing it."

2. This draft states it focuses on LSP Path central control, but I think the
procedures described in this draft is common to other CCI object(which may
be defined in other documents). So would it be better to generalize the
procedures? The specific part for other path type may be only the CCI
objects. This can facilitate the extension of PCECC procedure in other
scenario.

3. Section-5.5.1of this draft
<https://tools.ietf.org/html/draft-ietf-pce-pcep-extension-for-pce-controlle
r-06#section-5.5.1>  describes the “Basic PCECC LSP Setup”, which is based
on the LSP delegation mode. But for LSP delegate mode, the LSP must exist
beforehand, which is constructed via the distributed protocol(RSVP etc.). In
such scenario, is it necessary to allocate the Label via the PCE?

4. I think the most useful scenario for PCECC should be based on “PCE
Initiate” message, which is used to initiate one new path from the PCE,
together with the label allocation.

5. Similar consideration is for the “PCC allocation label”. What the
reason to let the PCC allocate such label? Why can’t PCE allocate such
information for each PCC from its appointed label space?

6. For definition of CCI object, will it simplify the overall procedures if
the CCI object for MPLS label includes both the IN and OUT label together?

Best Regards

Aijun Wang

China Telecom

-----Original Message-----
From: pce-bounces@ietf.org [mailto:pce-bounces@ietf.org] On Behalf Of
julien.meuric@orange.com
Sent: Thursday, August 6, 2020 12:19 AM
To: pce@ietf.org
Subject: [Pce] PCE WG LC for
draft-ietf-pce-pcep-extension-for-pce-controller

Hi all,

This message initiates a 3-week WG Last Call on
draft-ietf-pce-pcep-extension-for-pce-controller-06. Please review and share
your feedback, whatever it is, using the PCE mailing list.

This LC will end on Wednesday August 26, 11:59pm (any timezone).

Please note that this I-D is related to

draft-zhao-pce-pcep-extension-pce-controller-sr which is already in our WG
adoption queue.

Thanks,

Dhruv & Julien

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