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Re: [CCAMP] Network Assigned Upstream Label - Draft Update

John E Drake <jdrake@juniper.net> Fri, 28 February 2014 13:11 UTC

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From: John E Drake <jdrake@juniper.net>
To: "Giovanni Martinelli (giomarti)" <giomarti@cisco.com>, Vishnu Pavan Beeram <vishnupavan@gmail.com>
Thread-Topic: [CCAMP] Network Assigned Upstream Label - Draft Update
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Date: Fri, 28 Feb 2014 13:10:35 +0000
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Subject: Re: [CCAMP] Network Assigned Upstream Label - Draft Update
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Giovanni,

Use of acceptable doubles the signaling overhead and opens up a contention window:


1)      Path

2)      Path_err w/ acceptable label

3)      Contention window

4)      Path w/ acceptable label

5)      Resv

Versus:


1)      Path w/ downstream assigned label request

2)      Resv w/ downstream assigned label

Also, it's generally considered a bad idea(tm) to include error messages in the normal operation of a protocol

Yours Irrespectively,

John

From: CCAMP [mailto:ccamp-bounces@ietf.org] On Behalf Of Giovanni Martinelli (giomarti)
Sent: Friday, February 28, 2014 4:54 AM
To: Vishnu Pavan Beeram
Cc: ccamp@ietf.org
Subject: Re: [CCAMP] Network Assigned Upstream Label - Draft Update

Hi Vishnu,

On 28 Feb 2014, at 13:26, Vishnu Pavan Beeram <vishnupavan@gmail.com<mailto:vishnupavan@gmail.com>> wrote:


(2) The use of Label-Set/Acceptable Label-Set was meant to be used for exceptions. Using it always for every setup request is a compromised solution.


At the time we discussed the wson signaling (http://tools.ietf.org/html/draft-ietf-ccamp-wson-signaling-06), the acceptable label set was considered good enough. Not sure it comes into play at every request since your label_set should have reasonably good labels.

Cheers
G

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