Re: [mpls] Poll 2: New SPL vs re-purposed ELI for carrying Network Action Indicators

Hi Tony,

> discussing it further is pointless.

Can you please kindly explain why the proposed model is insufficient ? 8
bits of ELC seems more then enough to indicate presence of an ISD entry
following EL entry. How you encode ISD itself is completely up to you. You
could fill it up to the wire's MTU if deemed necessary.

I understand you are proposing to encode functions and actions immediately
after the MNA indicator, but this is just a possibility - not sure WG
agrees as the best one or clearly not a killer argument IMO.

>  It doesn’t scale. We need more bits.

Side note - IMHO pumping more bits into MPLS Label Stack is not a good
thing.

Best,
R.

On Fri, 17 Jun 2022 at 05:26, Tony Li <tony.li@tony.li> wrote:

>
> Zafar,
>
> Again, my problem with Bruno’s draft is that the limited space found in
> the ELI/EL LSE’s is clearly insufficient to begin to capture the use cases
> that we already can foresee for MNA, much less provide any room for
> growth.  It doesn’t scale. We need more bits. For that reason alone,
> Bruno’s draft is not a tenable solution to MNA and discussing it further is
> pointless.
>
> Tony
>
>
> On Jun 16, 2022, at 7:32 PM, Zafar Ali (zali) <zali@cisco.com> wrote:
>
> Tony, Kireeti,
>
> So “I do not want to modify my current implementation” is the argument to
> stop people interested in Bruno’s draft from using it?
> If such HW can/ need be modified to implement the new complex encoding
> scheme you proposed, why it cannot implement simple encoding in Bruno’s
> draft?
>
> Please also look at
> https://datatracker.ietf.org/doc/html/draft-decraene-mpls-slid-encoded-entropy-label-id-04#section-4.4
>  and
> https://datatracker.ietf.org/doc/html/draft-decraene-mpls-slid-encoded-entropy-label-id-04#section-4.5
>
> Thanks
>
> Regards … Zafar
>
>
> *From: *Tony Li <tony1athome@gmail.com> on behalf of Tony Li <
> tony.li@tony.li>
> *Date: *Thursday, June 16, 2022 at 3:10 PM
> *To: *"Zafar Ali (zali)" <zali@cisco.com>
> *Cc: *Kireeti Kompella <kireeti.ietf@gmail.com>, "
> bruno.decraene@orange.com" <bruno.decraene@orange.com>, "mpls@ietf.org" <
> mpls@ietf.org>, "pals-chairs@ietf.org" <pals-chairs@ietf.org>, "
> mpls-chairs@ietf.org" <mpls-chairs@ietf.org>, DetNet Chairs <
> detnet-chairs@ietf.org>
> *Subject: *Re: [mpls] Poll 2: New SPL vs re-purposed ELI for carrying
> Network Action Indicators
>
>
>
>
>
> The draft has been implemented for the exact (SLID) use-case on hardware
> platforms based on Broadcom Jericho2 family of ASIC
> Please take a look at
> https://datatracker.ietf.org/doc/html/draft-decraene-mpls-slid-encoded-entropy-label-id-04#section-7
>
> No such issue was noted
>
>
>
> And Jericho2 is the only thing that counts in the entire world?
>
> T
>
>
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