Ketan Talaulikar has entered the following ballot position for
draft-ietf-lisp-te-21: No Objection

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COMMENT:
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Thanks to the authors and the WG for their work on this document.

I support Gorry's DISCUSS related to ELP probing. It seems to me that ELP
Probing (section 7) is an integral part of the LISP TE solution. Without this
feature, I wondering how an operator could monitor/verify these LISP TE paths.
And if my understanding is correct then, draft-filyurin-lisp-elp-probing that
is listed as informative should become a normative reference.

Regarding the experimental status for this draft, I note that the shepherd's
report indicates that implementations exist. That conveys implementation
experience has already been achieved. I guess the reason why this is
experimental is because it relies on LCAF (RFC8060) which is in experimental
status. This is not an issue per se with this document, but that the WG perhaps
needs to reprioritize its work in promoting experimental documents to PS before
sending more experimental documents for publication to the IESG. AFAIK LCAF and
Vendor specific LCAFs are widely implemented and deployed LISP features and
quite foundational but remain as experimental - please correct if I've got it
wrong. So, more of a feedback to the WG chairs/AD.

Regarding Section 8 Service Chaining, I support Med's DISCUSS point. The text
says "ITR can encapsulate packets to the RTR which will decapsulate and deliver
packets to a scrubber service device." - however, there is no protocol
specification that indicates which packets the RTR should send to the scrubber
service? Is the RTR itself running the scrubber service and "all" LISP packets
sent to it are subject to the scrubber? More details and clarifications will
help. I would expect that the ELPs need some indication of the RTR also doing
extra service functions?

Regarding Section 10 Multicast, I believe some references to LISP multicast
documents are necessary. Perhaps RFC6831 can be referenced again here. I am not
sure if any other is needed.



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