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Re: [pim] WGLC: draft-ietf-pim-jp-extensions-lisp-03

Alvaro Retana <aretana.ietf@gmail.com> Mon, 08 May 2023 17:12 UTC

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From: Alvaro Retana <aretana.ietf@gmail.com>
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To: pim@ietf.org, Mike McBride <mmcbride7@gmail.com>
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Subject: Re: [pim] WGLC: draft-ietf-pim-jp-extensions-lisp-03
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Hi!

I am not opposed to the intent of this document (extending the use of the
existing attribute), but I don't think it's ready to move forward.  In
short, where's the specification?

The document includes a section to justify the extension ("The case for
extending the Received ETR RLOC Attribute of RFC 8059"): it presents
several scenarios and considerations.  But there's no description of how
the Receiver ETR RLOC Attribute is used differently -- there's no
specification.

For example (not an exhaustive list):

- rfc8059 explains the use of the attribute that "allows the root ITR to
  perform unicast LISP-encapsulation of multicast data packets to each and
  every receiver ETR that has requested unicast head-end replication."  But
  this is not the use case for the extension.

- Is multicast transport always expected when using a multicast address for
the
  ETR?

- Do any of the attribute fields need to be updated?

- Should this document formally Update rfc8059?


Alvaro.

On April 26, 2023 at 1:59:56 PM, Mike McBride (mmcbride7@gmail.com) wrote:

Hello,

Today begins a 2 week wglc for
https://datatracker.ietf.org/doc/draft-ietf-pim-jp-extensions-lisp/

Please take a moment to review the draft and let Stig and I know if you
feel it is ready to progress beyond the wg.

thanks,
mike
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