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Re: [mpls] comment on draft-ietf-mpls-residence-time

Gregory Mirsky <gregory.mirsky@ericsson.com> Tue, 02 February 2016 01:36 UTC

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From: Gregory Mirsky <gregory.mirsky@ericsson.com>
To: Lou Berger <lberger@labn.net>, "draft-ietf-mpls-residence-time@ietf.org" <draft-ietf-mpls-residence-time@ietf.org>, "mpls@ietf.org" <mpls@ietf.org>, TEAS WG <teas@ietf.org>, "CCAMP (ccamp@ietf.org)" <ccamp@ietf.org>
Thread-Topic: comment on draft-ietf-mpls-residence-time
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Date: Tue, 02 Feb 2016 01:35:55 +0000
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Subject: Re: [mpls] comment on draft-ietf-mpls-residence-time
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Hi Lou,
thank you for your thoughtful recommendation. I agree that we can use LSP_ATTRIBUTES [RFC5420]. I'll prepare update and share with you, MPLS, TEAS , and CCAMP WGs. 

	Regards,
		Greg

-----Original Message-----
From: Lou Berger [mailto:lberger@labn.net] 
Sent: Sunday, January 31, 2016 6:38 AM
To: draft-ietf-mpls-residence-time@ietf.org; mpls@ietf.org
Subject: comment on draft-ietf-mpls-residence-time

Hi,
	I see you propose defining a new RSVP object class that has application specific scope.  As I'm sure you know the RSVP class-number space is really small so it's best to avoid allocating new object classes whenever possible.  I believe there is an existing object class that you can use for your purposes -- the LSP_ATTRIBUTES object.

Have you considered carrying RTM Hops in 1 (or three,  depending on if you want sub-tlvs or not) new RTM Attribute TLV (or TLVs)?

If not, I think it is worth exploring the viability of this approach or any other approach that doesn't require the allocation of a new class-num.

Lou
(As contributor and TEAS co-chair)

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