Re: [mpls] entropy label indicator label indraft-kompella-mpls-entropy-label

John E Drake <jdrake@juniper.net> Tue, 27 July 2010 13:34 UTC

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From: John E Drake <jdrake@juniper.net>
To: Yong Lucy <lucyyong@huawei.com>, Kireeti Kompella <kireeti@juniper.net>, 'Shane Amante' <shane@castlepoint.net>, "mpls@ietf.org" <mpls@ietf.org>
Date: Tue, 27 Jul 2010 06:31:03 -0700
Thread-Topic: [mpls] entropy label indicator label indraft-kompella-mpls-entropy-label
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Subject: Re: [mpls] entropy label indicator label indraft-kompella-mpls-entropy-label
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Lucy,

Yes it does.  That is the whole point.  That is how the egress knows whether the ingress has placed an entropy label in the stack.  (That is why we termed it the 'Entropy Label Indicator'.)

Thanks,

John

From: Yong Lucy [mailto:lucyyong@huawei.com]
Sent: Tuesday, July 27, 2010 6:25 AM
To: John E Drake; Kireeti Kompella; 'Shane Amante'; mpls@ietf.org
Subject: RE: [mpls] entropy label indicator label indraft-kompella-mpls-entropy-label

What is the benefit for such control? Egress LSR does not use this value.
Lucy

________________________________
From: John E Drake [mailto:jdrake@juniper.net]
Sent: Tuesday, July 27, 2010 8:10 AM
To: Yong Lucy; Kireeti Kompella; 'Shane Amante'; mpls@ietf.org
Subject: RE: [mpls] entropy label indicator label indraft-kompella-mpls-entropy-label

Lucy, we discussed this and decided it was better to have the egress control the values of the ELI it advertises.  Plus, getting a reserved value would be difficult

From: mpls-bounces@ietf.org [mailto:mpls-bounces@ietf.org] On Behalf Of Yong Lucy
Sent: Tuesday, July 27, 2010 5:31 AM
To: Kireeti Kompella; 'Shane Amante'; mpls@ietf.org
Subject: [mpls] entropy label indicator label in draft-kompella-mpls-entropy-label

Hi Kireeti and Shane,

Could we consider use one of reserved label for ELI purpose? This will make implementation much easy, i.e. not need to keep the state for each ELI label. The approach can be used in general for RSVP-TE and BGP as well.

Regards,
Lucy