Yes, I also think this combination is better.
Option 1 Open msg can be used for initial report, and the rest update can be 
reported by the Notification msg.

Already recorded this in the slide.

Cheng


From: Dhruv Dhody <d...@dhruvdhody.com>
Sent: Tuesday, July 9, 2024 11:34 AM
To: Cheng Li <c...@huawei.com>
Cc: pce@ietf.org; pce-chairs <pce-cha...@ietf.org>; Samuel Sidor (ssidor) 
<ssi...@cisco.com>
Subject: Re: [Pce] Where the Controlled ID info shuold be carried/encoded?

Hi,

Samuel made a suggestion to combine the options of using Open and Notification 
together, I have now captured that in the notes page - 
https://notes.ietf.org/draft-ietf-pce-controlled-id-space?view

Feel free to add to the discussion here or on the notes page.

Thanks!
Dhruv

On Sat, Jul 6, 2024 at 2:53 PM Dhruv Dhody 
<d...@dhruvdhody.com<mailto:d...@dhruvdhody.com>> wrote:
Hi Cheng,

To facilitate this discussion I have created a notes page - 
https://notes.ietf.org/draft-ietf-pce-controlled-id-space?view that documents 
the various options.

WG,

Feel free to add things there but add your name for easy tracking.
You can also add your preference for a solution and with reasoning at the 
bottom or simply reply on this thread and I can keep the notes page updated.

Hope the WG finds this useful and it helps in converging on a way forward...

Thanks!
Dhruv

On Thu, Jun 20, 2024 at 10:46 AM Cheng Li 
<c.l=40huawei....@dmarc.ietf.org<mailto:40huawei....@dmarc.ietf.org>> wrote:
Hi Guys,

Thank you so much for your helpful review and comments of our draft 
draft-ietf-pce-controlled-id-space.
In the WG adoption, I can summarize our discussion into the below bullets, hope 
they are correct,

  1.  The draft is useful, and the mechanism defined in the draft is needed, we 
should work on it. (Thanks!)
  2.  We need to discuss the where the info should be carried in the PCEP. Open 
Object seems not so good ☹
  3.  TLV encoding should be updated to be more generic or let's avoid the 
generic description and define specific sub-TLVs as needed.

I see the reasons why we decided to carry the info in PCEP Open Object, because 
it is a device-wide configuration info, which should not be modified in the 
running state. We may face a lot of trouble of removing some IDs and then 
modify the range in a running network. However, we may also need to handle the 
negotiation between PCC and PCE?  Therefore, I am also concerning about this.

I like to hear your voice on this, which object/msg is appropriate to carry the 
info? I am open with other options.

Possible options could be

•  Open message

•  Use PCEP-LS encoding and make this a node attribute

•  New type of notification

•  New message/object

Once we get the conclusion of this, we can go to the bullet 3, which is much 
easier that bullet 2. IMHO, I will prefer to define sub-TLVs one by one, this 
can decouple the relations between IDs, though we may need to delete the 
'generic' words.

Thoughts?
Cheng

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