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Early Review of draft-ietf-idr-bgp-ct-19

Request Review of draft-ietf-idr-bgp-ct
Requested revision No specific revision (document currently at 33)
Type Early Review
Team Ops Directorate (opsdir)
Deadline 2024-01-05
Requested 2023-12-19
Requested by Susan Hares
Authors Kaliraj Vairavakkalai , Natrajan Venkataraman
I-D last updated 2024-01-05
Completed reviews Rtgdir Early review of -18 by Jonathan Hardwick (diff)
Secdir Early review of -18 by Magnus Nyström (diff)
Opsdir Early review of -19 by Bo Wu (diff)
Secdir Early review of -19 by Magnus Nyström (diff)
Tsvart Early review of -27 by Olivier Bonaventure (diff)
Secdir Early review of -30 by Magnus Nyström (diff)
Rtgdir Early review of -09 by Mohamed Boucadair (diff)
Opsdir Early review of -12 by Bo Wu (diff)
RTG-DIR - Jon Hardwick is working on the review, but this request is to revise the date for completion. 
If Jon could review this draft by 1/5/2023, it would be helpful. 

OPS-DIR - Bo Wu did the review in July.  It would be helpful for him to review the latest version (-18) or later.  Or you can obtain another person, 

SEC-DIR - Intent (Color) could have security issues in this draft. The service data (customer data) is being tracked by intent and placed over service quality tunnels.  In one view, it is just more layering. In an alternate view, the color exposes some abstract qualities about the network. 

TSV-DIR - Please look at this draft from the viewpoint of having intent (color) aware customer traffic forwarded over a VPN overlay (tunnels) that forwarded over a set of intent (color) aware underlay of tunnels.  Please consider the problems with tunnels in your review of this text.
Assignment Reviewer Bo Wu
State Completed
Request Early review on draft-ietf-idr-bgp-ct by Ops Directorate Assigned
Posted at
Reviewed revision 19 (document currently at 33)
Result Has nits
Completed 2024-01-05

I am the assigned Ops reviewer to conduct the "early" review of this draft.
This is my second review.

Thanks for addressing my previous comments. I have few minor comments on rev-19:

1)Abstract and Section 3. Architecture Overview
Abstract says “overlay routes”, but section 3 uses “service routes”. Can the
service route be used consistently? If not, can you add the difference?

2) 3. Architecture Overview
Please add the description or examples of SN for Figure 1.

3) 4. Transport Class
The document says "The terms'Transport Class ID' and'Color' are used
interchangeably in this document"

These two seem two different definitions, as section 7.10. has the following
text: "Transport Class ID SubTLV, in MultiNexthop Attribute. Color SubTLV, in
Tunnel Encapsulation Attribute. Transport Target Extended community, on BGP CT
route. Color Extended community, on BGP service route."

4) 10. Operations and Manageability Considerations
Only RDs and labels are discussed. Should transport class RT managment also be
described in this section?

5) 12. Applicability to Network Slicing
Network slice is just an example of BGP CT. Should this section be an appendix?
About Mapping Community, Network Slice service traffic mapping occurs on the
PE's CE-facing interfaces, while Mapping community is on the PE's
network-facing interfaces, correct?