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[mpls] Re: Poll: IOAM and PSD

Tony Li <tony.li@tony.li> Sat, 03 August 2024 16:58 UTC

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Date: Sat, 03 Aug 2024 09:58:13 -0700
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To: Michael Menth <menth@uni-tuebingen.de>
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Subject: [mpls] Re: Poll: IOAM and PSD
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[WG chair hat: on]

Hi Michael,

Thank you for responding.  Could you please address the questions more directly?

Thanks,
Tony


> On Aug 3, 2024, at 6:43 AM, Michael Menth <menth@uni-tuebingen.de> wrote:
> 
> Hi all,
> 
> we're not operators but researchers who implemented some IOAM flavors in combination with SR using P4 on Tofino. We've presented some results at an interim meeting before:
> https://datatracker.ietf.org/meeting/interim-2024-mpls-01/session/mpls
> 
> IOAM requires mutable data. In combination with multiple labels, e.g., for SR, these mutable data need to be near the bottom of the stack, otherwise they get popped along the way. Moving them to PSD makes encoding more efficient without increasing the effective header length that needs  to be parsed. Therefore, we think PSD is the better option for applications like IOAM.
> 
> Regards
> 
> Michael
> 
> 
> Am 30.07.2024 um 17:25 schrieb Tony Li:
>> [WG chair hat: on]
>> 
>>  
>> Hi all,
>>  
>> We’ve had many discussions about IOAM and PSD over the last few years. We need to reach consensus on the problems that need to be addressed in these areas. Therefore, we would like to hear from everyone, especially independent operators:
>>  
>> There are many flavors of IOAM.  Which ones would you like to deploy/implement with MNA?
>> Do you have other applications of MNA that have not been proposed yet?
>>  
>>  This poll will close in two weeks, at 9am PDT, Aug 13.
>>  
>> Regards,
>> MPLS chairs
>> 
>> 
>> 
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> -- 
> Prof. Dr. habil. Michael Menth
> University of Tuebingen
> Faculty of Science
> Department of Computer Science
> Chair of Communication Networks
> Sand 13, 72076 Tuebingen, Germany
> phone: (+49)-7071/29-70505
> mailto:menth@uni-tuebingen.de
> http://kn.cs.uni-tuebingen.de <http://kn.cs.uni-tuebingen.de/>
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