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Re: [Lsr] WG adoption call for draft-acee-lsr-ospf-admin-tags-07

Shraddha Hegde <shraddha@juniper.net> Wed, 20 January 2021 11:40 UTC

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From: Shraddha Hegde <shraddha@juniper.net>
To: Jeff Tantsura <jefftant.ietf@gmail.com>, "lsr@ietf.org" <lsr@ietf.org>, Christian Hopps <chopps@chopps.org>
CC: "lsr-chairs@ietf.org" <lsr-chairs@ietf.org>
Thread-Topic: [Lsr] WG adoption call for draft-acee-lsr-ospf-admin-tags-07
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Archived-At: <https://mailarchive.ietf.org/arch/msg/lsr/M_9rQLq-y5bxWK7CZ8aLYNk6e5U>
Subject: Re: [Lsr] WG adoption call for draft-acee-lsr-ospf-admin-tags-07
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WG,

Its useful to have admin tag support for prefixes in OSPF.
I support the WG adoption.

I have below comments on the document.


  1.  I suggest to add subsections in the section 4 protocol operations to separately address sender side and receiver side protocol operations
  2.  Sender side need to talk about below cases
     *   Same admin tag should not be encoded multiple times
     *   For each Prefix TLV, only one admin tag sub-TLV should be included

(I don't see the need to support multiple admin tag sub-TLV in same prefix TLV)
                 Receiver side

  1.  If same tag appears multiple times in the admin tag sub-TLV , the first one MUST be  considered and others ignored
  2.  If there are more than one admin tag sub-TLVs in the ospfv2/ospfv3  prefix TLV only first one MUST be processed and others ignored
  3.  When both admin tag sub-TLV and existing tag in OSPFv2 and OSPFv3 AS-External-LSA and NSSA-LSA are received, the route should consider a union of all these tags.


  1.  Section 6 IANA

Change to

TBD - 32-bit Administrative Tag sub-TLV

  1.  Need to have some explicit statements on Route calculation.

Change in admin tag sub_TLV should at minimum trigger partial route calculation.



Rgds

Shraddha



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From: Lsr <lsr-bounces@ietf.org> On Behalf Of Jeff Tantsura
Sent: Saturday, January 9, 2021 6:03 AM
To: lsr@ietf.org; Christian Hopps <chopps@chopps.org>
Cc: lsr-chairs@ietf.org
Subject: Re: [Lsr] WG adoption call for draft-acee-lsr-ospf-admin-tags-07

[External Email. Be cautious of content]

yes/support

Cheers,
Jeff
On Jan 5, 2021, 1:17 AM -0800, Christian Hopps <chopps@chopps.org<mailto:chopps@chopps.org>>, wrote:
This begins a 2 week WG adoption call for the following draft:

https://datatracker.ietf.org/doc/draft-acee-lsr-ospf-admin-tags/

Please indicate your support or objection by January 19th, 2021.

Authors, please respond to the list indicating whether you are aware of any IPR that applies to this draft.

Thanks,
Chris.

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