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Re: [Lsr] AD Review of draft-ietf-lsr-isis-srv6-extensions-11

Peter Psenak <ppsenak@cisco.com> Thu, 22 April 2021 11:27 UTC

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To: Alvaro Retana <aretana.ietf@gmail.com>, draft-ietf-lsr-isis-srv6-extensions@ietf.org
Cc: John Scudder <jgs@juniper.net>, "lsr-chairs@ietf.org" <lsr-chairs@ietf.org>, lsr@ietf.org, Christian Hopps <chopps@chopps.org>
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From: Peter Psenak <ppsenak@cisco.com>
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Date: Thu, 22 Apr 2021 13:26:56 +0200
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Archived-At: <https://mailarchive.ietf.org/arch/msg/lsr/zLSlufcXEDBTD5gGCLRc3cDXAzs>
Subject: Re: [Lsr] AD Review of draft-ietf-lsr-isis-srv6-extensions-11
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Hi Alvaro,

I have posted an updated version of the draft that has the new 
registries defined for all flags fields defined in it.

thanks,
Peter

On 09/04/2021 22:54, Alvaro Retana wrote:
> Peter:
> 
> I’m ok with the text below.
> 
> Thanks!
> 
> Alvaro.
> 
> 
> On April 9, 2021 at 4:12:43 AM, Peter Psenak (ppsenak@cisco.com
> (mailto:ppsenak@cisco.com)) wrote:
> 
>>> 268 In cases where a locator advertisement is received in both a Prefix
>>> 269 Reachability TLV and an SRv6 Locator TLV - (e.g. prefix, prefix-
>>> 270 length, MTID all being equal and Algorithm being 0 in Locator TLV),
>>> 271 the Prefix Reachability advertisement MUST be preferred when
>>> 272 installing entries in the forwarding plane. This is to prevent
>>> 273 inconsistent forwarding entries between SRv6 capable and SRv6
>>> 274 incapable routers. Such preference of Prefix Reachability
>>> 275 advertisement does not have any impact on the rest of the data
>>> 276 advertised in the SRv6 Locator TLV.
>>>
>>> [major] "e.g. prefix, prefix-length, MTID all being equal and
>>> Algorithm being 0 in Locator TLV"
>>>
>>> This text should not be an example because those are the fields that
>>> should match. Please make it clear: "The locator advertisement is
>>> both TLVs is considered the same when the following fliends match..."
>>> (or something like that with better words).
>>
>> what about:
>>
>> "In case where the same prefix, with the same prefix-length, MTID and
>> algorithm is received in both a Prefix Reachability TLV and an SRv6
>> Locator TLV the Prefix Reachability advertisement MUST be preferred.."
>>>
> 
>

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