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Re: [Sidrops] Which 8210-bis error code should be used?

"Borchert, Oliver (Fed)" <oliver.borchert@nist.gov> Thu, 18 May 2023 17:39 UTC

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From: "Borchert, Oliver (Fed)" <oliver.borchert@nist.gov>
To: Randy Bush <randy@psg.com>, "Borchert, Oliver (Fed)" <oliver.borchert=40nist.gov@dmarc.ietf.org>
CC: "sidrops@ietf.org" <sidrops@ietf.org>, "Borchert, Oliver (Fed)" <oliver.borchert@nist.gov>
Thread-Topic: [Sidrops] Which 8210-bis error code should be used?
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Date: Thu, 18 May 2023 17:39:16 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/sidrops/FAS75gn1TM1_33bKOkitwOD7Iq0>
Subject: Re: [Sidrops] Which 8210-bis error code should be used?
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I see it the following way. If ASPA Profile requires the generation of an AS0 and 8210bis supports ASPA profile, then 8210bis must provide a way to solve to issue.


  *   One more modification of the PDU by removing the AFI Flag and all following fields with [Customer_ASN, Provider-AS-Count-IPV4, list-of-PAS, Provider-AS-Count-IPv6, list-of-PAS]. With a Provider-AS-Count of 0 representing an AS0, same as Provider-AS-Count of 1 with an AS0 element in the list. (or Provider-AS-Count = 1..n which forces an ASN to be specified.)
  *   Or adding an error code “9: ASPA pair missing” to indicate to the provider that an expected AFI for an ASPA PDU is missing.

If ASPA Profile does not require (SHOULD or less) the generation of an AS0 ASPA then don’t even mention it. Mention it only in the draft that deals with the algorithm itself and both drafts Profile and 8210bis just ignore it.

But leaving it in an undefined form is bad design.

From: Randy Bush <randy@psg.com>
Date: Thursday, May 18, 2023 at 1:01 AM
To: Borchert, Oliver (Fed) <oliver.borchert=40nist.gov@dmarc.ietf.org>
Cc: sidrops@ietf.org <sidrops@ietf.org>, Borchert, Oliver (Fed) <oliver.borchert@nist.gov>
Subject: Re: [Sidrops] Which 8210-bis error code should be used?
> When processing the ASPA PDU of
> https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdatatracker.ietf.org%2Fdoc%2Fhtml%2Fdraft-ietf-sidrops-8210bis-10&data=05%7C01%7Coliver.borchert%40nist.gov%7Cc2eac99781014785d75808db575cf882%7C2ab5d82fd8fa4797a93e054655c61dec%7C1%7C0%7C638199829078928793%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=lH%2Fo0mMmk%2FR5LVjtu34dlqgdubxdvxcS5q6Cr%2BmF6Pk%3D&reserved=0<https://datatracker.ietf.org/doc/html/draft-ietf-sidrops-8210bis-10>,
> the profile draft
> https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ietf.org%2Farchive%2Fid%2Fdraft-ietf-sidrops-aspa-profile-13.txt&data=05%7C01%7Coliver.borchert%40nist.gov%7Cc2eac99781014785d75808db575cf882%7C2ab5d82fd8fa4797a93e054655c61dec%7C1%7C0%7C638199829078928793%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=m8DuVJ%2B5n8S3BhzghLxBXLObgu%2BXdkl647LWn6OGAVE%3D&reserved=0<https://www.ietf.org/archive/id/draft-ietf-sidrops-aspa-profile-13.txt>
> and in particular Appendix A mentions that: “Note that two PDUs are
> always generated per Customer ASID: one with AFI Flags = IPv4 and one
> with AFI Flags = IPv6.”. This requires when using 8210bis to propagate
> the data to the router (client) that 2 separate PDU’s need to be
> generated because a single ASPA PDU only contains provider information
> for a single AFI.
>
> Question:
> =========
> What error code should I use when the router only receives in total
> one of them?

42 - bad internet-draft

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