[Last-Call] Re: UDP Guidelines and draft-ietf-bfd-unaffiliated-echo-12

["Gorry (erg)" <gorry@xxxxxxxxxxxxxx>]

On 17 Oct 2024, at 09:45, xiao.min2@xxxxxxxxxx wrote:



Hi Dhruv,

Thank you for the prompt feedback.
Please see inline.

Original

From: DhruvDhody <dhruv.ietf@xxxxxxxxx>

To: 肖敏10093570;

Cc: jhaas@xxxxxxxx <jhaas@xxxxxxxx>;gorry@xxxxxxxxxxxxxx <gorry@xxxxxxxxxxxxxx>;last-call@xxxxxxxx <last-call@xxxxxxxx>;draft-ietf-bfd-unaffiliated-echo.all@xxxxxxxx <draft-ietf-bfd-unaffiliated-echo.all@xxxxxxxx>;rtg-bfd@xxxxxxxx <rtg-bfd@xxxxxxxx>;

Date: 2024年10月17日 16:32

Subject: [Last-Call] Re: UDP Guidelines and draft-ietf-bfd-unaffiliated-echo-12

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Hi Xiao,

[XM]>>> I can add the reference to RFC 5082 back to this document, if no objection from Dhruv (who had that concern). Propose to change the text as below.

OLD

All Unaffiliated BFD Echo    packets for the session MUST be sent with a Time to Live (TTL) or Hop    Limit value of 255, and received with a TTL or Hop Limit value of    254, otherwise the received packets MUST be dropped.

NEW

All Unaffiliated BFD Echo    packets for the session MUST be sent with a Time to Live (TTL) or Hop    Limit value of 255, and received with a TTL or Hop Limit value of    254, otherwise the received packets MUST be dropped ([RFC5082] Appendix A).

END

Dhruv: I would have been happy with rephrasing the text in such a way that referencing 5082 made sense. Would this be better - 

"All Unaffiliated BFD Echo packets for the session MUST be sent with a Time to Live (TTL) or Hop Limit value of 255. Received packets MUST have a TTL or Hop Limit value of 254 (similar to Appendix A of [RFC5082] to verify against a configured number of hops); otherwise, the received packets MUST be dropped."

[XM]>>> Yes, your text looks better to me. How about Jeff and Gorry?

I do think the addition of the reference helps. Thanks. 

This gives context and informs people who might like being creative with different ways to design this mechanism.

Gorry

Best Regards,

Xiao Min

Thanks! 

Dhruv

Cheers,

Xiao Min

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