Re: [mpls] Concerns about ISD

Hi Tianran,
I have got several questions based on the discussion we had of the use
cases and hope you could share your opinion:

   - Do you see a benefit of supporting EL using NMA? If EL is supported by
   NMA, should it be in ISD or PSD?
   - If NMA supports GISS, where do you see it - ISD or PSD?
   - If NMA to support IOAM in MPLS be only Preallocated Trace Option and
   Direct Export types, would you consider carrying the IOAM Header in ISD?

Regards,
Greg

On Tue, Apr 12, 2022 at 6:17 PM Tianran Zhou <zhoutianran=
40huawei.com@dmarc.ietf.org> wrote:

> Hi,
>
>
>
> Comments in line.
>
>
>
> Tianran
>
>
>
>
>
> Juniper Business Use Only
>
> *From:* mpls <mpls-bounces@ietf.org> *On Behalf Of *Tianran Zhou
> *Sent:* Tuesday, April 12, 2022 2:36 AM
> *To:* Tony Li <tony.li@tony.li>
> *Cc:* mpls@ietf.org
> *Subject:* Re: [mpls] Concerns about ISD
>
>
>
> *[External Email. Be cautious of content]*
>
>
>
> Hi Tony,
>
>
>
> >>Pushing data to PSD and beyond the RLSD will cause systems to be
> excluded from the path or take a significant performance hit.
>
>
>
> If I know the RLSD of each node, there are many ways to prevent some nodes
> from pushing data to PSD.
>
>
>
> *[JD]  Given that you *only* want to use PSD, what is the above sentence
> proposing? *
>
>
>
> *ZTR> If you followed the past few emails, Tony misled people that PSD
> will hinder the interoperability. I just show you how PSD will not.
> According to your description below on the ISD process, it’s the same as
> PSD somehow. I did not see the ISD advantage.*
>
>
>
> I would like to know how ISD could survive if the ISD exceed the RLSD?
>
>
>
> *[JD]  The correct term is Network Actions  Sub-stack (NAS).  To answer
> your question, a transit node will miss the NAS regardless of whether it
> contains in-stack data.  This is the point that Tony has been making for
> the past few email iterations*
>
>
>
> *ZTR> Creating new terms does not help the community. I do not care the
> fancy term you created. Could you please point me out how many times Tony
> has clarified the ISD process? And where they are? I may have missed.*
>
> *In my brain, Tony did not address any of my concerns on ISD, but only
> kept ignoring the fact I presented. It’s not a good way for technique
> discussion.*
>
>
>
> Best,
> Tianran
>
>
>
> *From:* Tony Li [mailto:tony1athome@gmail.com <tony1athome@gmail.com>] *On
> Behalf Of *Tony Li
> *Sent:* Tuesday, April 12, 2022 2:03 PM
> *To:* Tianran Zhou <zhoutianran@huawei.com>
> *Cc:* mpls@ietf.org
> *Subject:* Re: [mpls] Concerns about ISD
>
>
>
>
>
> Hi Tianran,
>
>
>
> ZTR2> PSD can work with RLSD, I cannot see how it will hinder the
> interoperability.
>
>
>
>
>
> Pushing data to PSD and beyond the RLSD will cause systems to be excluded
> from the path or take a significant performance hit.
>
>
>
> Tony
>
>
> _______________________________________________
> mpls mailing list
> mpls@ietf.org
> https://www.ietf.org/mailman/listinfo/mpls
>