[bess] Re: Review request for draft - Efficient service carving in Multi-homed Evpn networks

[Kiran KT <[e-mail]>]

Hi Jorge
Thanks much for the feedback.
Will go through it.

Regards
Kiran

On Mon, 3 Feb, 2025, 10:28 pm Jorge Rabadan (Nokia), <
[e-mail]> wrote:

> Hi everyone,
>
>
>
> As requested by the chairs, I went through the text.
>
> Here are my comments, Kiran, in case they help:
>
>
>
>    - The text introduces a new DF election algorithm to address the gaps
>    in the default algorithm defined in RFC 7432. However, it does not mention
>    HRW (RFC 8584) or compare the proposed approach to it, even though HRW was
>    introduced specifically to address these same gaps.
>    - The proposed DF algorithm appears to use only VLANs as input, which
>    means it would suffer from the same imbalance across ESes as the default
>    algorithm — one of the issues highlighted in RFC 8584 and one of the key
>    reasons for introducing HRW.
>    - The text states that the proposal is “backward compatible with the
>    procedures defined in RFC 7432,” but it does not clarify which specific
>    procedures it refers to.
>    - Also, this text does not seem correct to me (RFC7432 does not
>    support “capabilities” or different DF Election algorithms):
>
>
>
> “As suggested in RFC7432 <https://datatracker.ietf.org/doc/html/rfc7432>,
> if any one of the PEs in the ES doesnt
>
> support this capability of this approach, all PEs can revert back
>
> to the default election algorithm type.”
>
>
>
>    - The IANA section requests the allocation of type value 2 (!). Please
>    do not suggest the use of a value that is registered already in IANA for
>    another algorithm. Please check out:
>    https://www.iana.org/assignments/bgp-extended-communities/bgp-extended-communities.xhtml,
>    DF Alg section.
>
>
>
> Overall, while the proposed algorithm may be useful in certain cases, I’m
> not convinced that another approach is necessary to address issues already
> handled by HRW—unless HRW is proven ineffective. Additionally, the document
> overlooks the preference-based DF algorithm, which is widely used in
> scenarios requiring full determinism and control in DF election.
>
>
>
> My two cents..
>
>
>
> Thanks.
>
> Jorge
>
>
>
>
>
>
>
> *From: *Matthew Bocci (Nokia) <matthew.bocci=[e-mail]>
> *Date: *Wednesday, January 22, 2025 at 8:07 AM
> *To: *[e-mail] <[e-mail]>, [e-mail] <
> [e-mail]>
> *Subject: *[bess] Re: Review request for draft - Efficient service
> carving in Multi-homed Evpn networks
>
> Hi WG
>
>
>
> Just reminder to please take a look at this and provide feedback to the
> author.
>
>
>
> Thanks
>
>
>
> Matthew
>
>
>
>
>
> *From: *Kiran KT <[e-mail]>
> *Date: *Saturday, 4 January 2025 at 09:25
> *To: *[e-mail] <[e-mail]>
> *Subject: *[bess] Re: Review request for draft - Efficient service
> carving in Multi-homed Evpn networks
>
> You don't often get email from [e-mail]. Learn why this is
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>
> *CAUTION:* This is an external email. Please be very careful when
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>
>
>
> Hi BESS Team
>
>
>
> The draft discusses approaches on how efficient Service Carving can be
> achieved in Multi-Homed EVPN networks.
>
> Kindly review and let me know your thoughts/comments on the same.
>
>
> https://datatracker.ietf.org/doc/draft-kiran-bess-service-carving-evpn-multi-homing/
>
>
>
> Kindly note: Draft will expire in the last week of Jan 2025.
>
>
>
> Regards
>
> Kiran
>
>
>
>
>
> On Sun, Oct 20, 2024 at 2:15 AM Kiran KT <[e-mail]> wrote:
>
> Hi BESS Team
>
>
>
> Request for reviewing my draft titled -
>
>          Efficient Service-Carving in Evpn Multi-homed Networks.
>
> The same is submitted and available in the link below.
>
>
> https://datatracker.ietf.org/doc/draft-kiran-bess-service-carving-evpn-multi-homing/
>
>
>
> Thanks in advance.
>
>
> Regards
>
> Kiran
>
>
>
> ---------- Forwarded message ---------
> From: *Kiran KT* <[e-mail]>
> Date: Sun, Aug 25, 2024 at 7:42 PM
> Subject: Review request for draft - Efficient service carving in
> Multi-homed Evpn networks
> To: <[e-mail]>
> Cc: Kiran KT <[e-mail]>
>
>
>
> Hello Team
>
>
>
> I have submitted a private draft titled -
>
>           Efficient Service-Carving in Evpn Multi-homed Networks.
>
> The same is submitted and available in the link below.
>
>
> https://datatracker.ietf.org/doc/draft-kiran-bess-service-carving-evpn-multi-homing/
>
> Request for review and comments.
>
> Thanks in advance.
>
>
>
> Regards
>
> Kiran
>
>