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Re: [Lsr] Working Group Adoption Poll for "OSPF Extension for Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01

"Goethals, Dirk (Nokia - BE/Antwerp)" <dirk.goethals@nokia.com> Mon, 18 February 2019 13:27 UTC

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From: "Goethals, Dirk (Nokia - BE/Antwerp)" <dirk.goethals@nokia.com>
To: Peter Psenak <ppsenak@cisco.com>, "Acee Lindem (acee)" <acee@cisco.com>, "lsr@ietf.org" <lsr@ietf.org>
Thread-Topic: [Lsr] Working Group Adoption Poll for "OSPF Extension for Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01
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Date: Mon, 18 Feb 2019 13:27:13 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/lsr/yd2sQxoHe4W-3oN6e0QruLrAQTE>
Subject: Re: [Lsr] Working Group Adoption Poll for "OSPF Extension for Prefix Originator" - draft-wang-lsr-ospf-prefix-originator-ext-01
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Hi Peter,
See inline DG>.
Dirk


On 2/18/2019 14:18, Peter Psenak wrote:
Hi Dirk,

On 18/02/2019 09:31 , Goethals, Dirk (Nokia - BE/Antwerp) wrote:
support +1

1 question:

When S1 in another area receives such LSA, it then can learn that
   prefix Lt1 is associated with node T1, check the ELC, ERLD, or MSD
   value according to its necessity, and construct the right label stack
   at the ingress node S1 for the traffic destined to Lt1.

How is S1 going to know the "ELC, ERLD, or MSD" of  node T1?
I guess, T1 will need to send an AS-scoped router info LSA?

yes, that is a possibility.


If so, should T1 be ASBR as to be able to send this AS-scoped LSA?

I would not think so.
DG> What's the use of an AS-scoped LSA, if the receiver has no way
to identify/locate the advertising router? Making T1 an ASBR will
enforce the ABR to create a T4 LSA.


I guess it was needed before as to enforce  the ABR to create the T4 LSAs,
so that others can learn which ABR to use to reach T4, but I guess
it's not needed anymore when this draft is implemented.

not sure how you reached the above conclusion. Can you please clarify?
DG> Since the ABR is adding the originator, one can indirectly learn that
the originator is also reachable via this ABR.

thanks,
Peter




Regards,
Dirk


On 2/13/2019 14:25, Acee Lindem (acee) wrote:

This begins a two week adoption poll for the subject draft. Please
send your comments to this list before 12:00 AM UTC on Thursday,
February 28^th , 2019.



All authors have responded to the IPR poll and there is one
<https://datatracker.ietf.org/ipr/search/?submit=draft&id=draft-wang-lsr-ospf-prefix-originator-ext><https://datatracker.ietf.org/ipr/search/?submit=draft&id=draft-wang-lsr-ospf-prefix-originator-ext> https://datatracker.ietf.org/ipr/search/?submit=draft&id=draft-wang-lsr-ospf-prefix-originator-ext

It is listed multiple times but references the same CN201810650141.



Thanks,

Acee




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