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

Tony Li <tony.li@tony.li> Fri, 17 June 2022 03:25 UTC

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Sender: Tony Li <tony1athome@gmail.com>
From: Tony Li <tony.li@tony.li>
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Date: Thu, 16 Jun 2022 20:25:39 -0700
In-Reply-To: <4D3BA352-6E89-489D-A849-2B72A5D0DC1F@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>
To: "Zafar Ali (zali)" <zali@cisco.com>
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Subject: Re: [mpls] Poll 2: New SPL vs re-purposed ELI for carrying Network Action Indicators
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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 <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 <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 <mailto:tony1athome@gmail.com>> on behalf of Tony Li <tony.li@tony.li <mailto:tony.li@tony.li>>
> Date: Thursday, June 16, 2022 at 3:10 PM
> To: "Zafar Ali (zali)" <zali@cisco.com <mailto:zali@cisco.com>>
> Cc: Kireeti Kompella <kireeti.ietf@gmail.com <mailto:kireeti.ietf@gmail.com>>, "bruno.decraene@orange.com <mailto:bruno.decraene@orange.com>" <bruno.decraene@orange.com <mailto:bruno.decraene@orange.com>>, "mpls@ietf.org <mailto:mpls@ietf.org>" <mpls@ietf.org <mailto:mpls@ietf.org>>, "pals-chairs@ietf.org <mailto:pals-chairs@ietf.org>" <pals-chairs@ietf.org <mailto:pals-chairs@ietf.org>>, "mpls-chairs@ietf.org <mailto:mpls-chairs@ietf.org>" <mpls-chairs@ietf.org <mailto:mpls-chairs@ietf.org>>, DetNet Chairs <detnet-chairs@ietf.org <mailto: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 <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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