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Re: [CCAMP] Question on LSP diversity

Daniele Ceccarelli <daniele.ceccarelli@ericsson.com> Thu, 06 March 2014 14:47 UTC

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From: Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>
To: "adrian@olddog.co.uk" <adrian@olddog.co.uk>, "'Gabriele Maria Galimberti (ggalimbe)'" <ggalimbe@cisco.com>, 'CCAMP' <ccamp@ietf.org>
Thread-Topic: [CCAMP] Question on LSP diversity
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Date: Thu, 06 Mar 2014 14:47:12 +0000
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Subject: Re: [CCAMP] Question on LSP diversity
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Hi Adrian,

Correct. If we all say that RSVP-TE is just for LSP set-up and not for a service request that's fine. The discussion on LSP diversity and half dozen of CCAMP drafts would be closed immediately :)

Daniele

From: Adrian Farrel [mailto:adrian@olddog.co.uk]
Sent: giovedì 6 marzo 2014 14:13
To: 'Gabriele Maria Galimberti (ggalimbe)'; Daniele Ceccarelli; 'CCAMP'
Subject: RE: [CCAMP] Question on LSP diversity

We may learn something from the ingress/egress protection work in MPLS and from the PW protection work in PWE3.

My personal view is that we continue to mix the concept of a service request and an LSP set-up. I think this is hurting us.

A

From: CCAMP [mailto:ccamp-bounces@ietf.org] On Behalf Of Gabriele Maria Galimberti (ggalimbe)
Sent: 06 March 2014 14:01
To: Daniele Ceccarelli; CCAMP (ccamp@ietf.org<mailto:ccamp@ietf.org>)
Subject: Re: [CCAMP] Question on LSP diversity

Hi Daniele,

Also the case 2 in some conditions requires the Core nodes need to co-ordinate each other.
This is unless the edge node has the knowledge of the LSPs ERO

Regards,
Gabriele

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Gabriele Galimberti
Technical Leader
Cisco Photonics Srl

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ggalimbe@cisco.com<mailto:ggalimbe@cisco.com>
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From: Daniele Ceccarelli <daniele.ceccarelli@ericsson.com<mailto:daniele.ceccarelli@ericsson.com>>
Date: Thursday, March 6, 2014 12:35 PM
To: "CCAMP (ccamp@ietf.org<mailto:ccamp@ietf.org>)" <ccamp@ietf.org<mailto:ccamp@ietf.org>>
Subject: [CCAMP] Question on LSP diversity

Hi,

bringing this to the list due to time constraints.

We said we have 4 use cases for LSP diversity:

-          1. Single homing

-          2. Dual homing

-          3. LSPs with different edge and core nodes

-          4. Multi domain

In cases 3 and 4 there is the need for "coordination" between edge nodes. Is such coordination in CCAMP scope or we assume that "somehow" the two edge nodes exchange such piece of info (e.g. NMS, the triangle with the eye, or whatever)?

BR
Daniele

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