[mpls] Re: Fwd: New Version Notification for draft-li-mpls-mna-entropy-03.txt
Loa Andersson <loa@pi.nu> Mon, 02 September 2024 08:57 UTC
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Date: Mon, 02 Sep 2024 16:56:48 +0800
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To: adrian@olddog.co.uk, 'Stewart Bryant' <stewart.bryant@gmail.com>, 'Tony Li' <tony.li@tony.li>
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Subject: [mpls] Re: Fwd: New Version Notification for draft-li-mpls-mna-entropy-03.txt
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Adrian, inlline. Den 02/09/2024 kl. 16:20, skrev Adrian Farrel: > How do you measure? > Size : 2^20 bits available in EL and LSE-C > Place in stack : No restriction on either > Repetition in stack : No restriction on either > > A OK, I was struggling before, this does not make it better :(. If all our methods are "equal", why do we struggle to develop new methods? One question I really can't keep from asking. Hope someone can lay it to rest. In hashing the stack a stack with 6 non-SPL labels gives me entropy based on 6 x 2^20 bits, to give me entropy based on the same number of bit with EL/ELI I need 12 LSEs, right? AS for an MNA based method you can use 20 bits in the LSE Format C and another 30 in an LSE Format D, right /Loa > -----Original Message----- > From: Loa Andersson <loa@pi.nu> > Sent: 02 September 2024 09:11 > To: Stewart Bryant <stewart.bryant@gmail.com>; Tony Li <tony.li@tony.li> > Cc: mpls <mpls@ietf.org> > Subject: [mpls] Re: Fwd: New Version Notification for draft-li-mpls-mna-entropy-03.txt > > Stewart and Tony, > > This might be classified as naive questions :). > > Den 02/09/2024 kl. 15:15, skrev Stewart Bryant: >> Hi Tony >> >> I am struggling to see whether this has a sufficient advantage over >> the existing EL/ELI mechanism to justify us recommending it existence. >> >> It is obvious that this can be done, and it saves an LSE, but is that >> sufficient justification for the complexity introduced by having two >> mechanisms that of necessity need to co-exist? >> >> We also need to understand what happens in a legacy routers that are >> looking for EL/ELI and older routers that just hash the stack. I think >> they just provide less (no?) entropy. > Is there a scientific way of calculating "how much" entropy the > different generate? > > Is more entropy always better? > > What are the factors that determine how much entropy you need? > > /Loa > > >> I imagine this ends with routers needing to parse for both types of >> entropy which is not a great position to be in. >> >> Best regards >> >> Stewart >> >>> On 30 Aug 2024, at 5:26 PM, Tony Li <tony.li@tony.li> wrote: >>> >>> [WG chair hat: off] >>> >>> Hi, >>> >>> This update addresses comments from Adrian Farrel as part of the WG >>> adoption process. >>> >>> Comments and corrections are most welcome. >>> >>> Thanks, >>> Tony >>> >>> >>>> Begin forwarded message: >>>> >>>> *From: *"internet-drafts at ietf.org" <mailforwards@cloudmails.net> >>>> *Subject: **New Version Notification for >>>> draft-li-mpls-mna-entropy-03.txt* >>>> *Date: *August 30, 2024 at 9:24:05 AM PDT >>>> *To: *"John Drake" <je_drake@yahoo.com>, "Tony Li" <tony.li@tony.li> >>>> *Reply-To: *internet-drafts@ietf.org >>>> >>>> A new version of Internet-Draft draft-li-mpls-mna-entropy-03.txt has >>>> been >>>> successfully submitted by Tony Li and posted to the >>>> IETF repository. >>>> >>>> Name: draft-li-mpls-mna-entropy >>>> Revision: 03 >>>> Title: MPLS Network Action for Entropy >>>> Date: 2024-08-28 >>>> Group: Individual Submission >>>> Pages: 5 >>>> URL: >>>> https://www.ietf.org/archive/id/draft-li-mpls-mna-entropy-03.txt >>>> Status: https://datatracker.ietf.org/doc/draft-li-mpls-mna-entropy/ >>>> HTMLized: >>>> https://datatracker.ietf.org/doc/html/draft-li-mpls-mna-entropy >>>> Diff: >>>> https://author-tools.ietf.org/iddiff?url2=draft-li-mpls-mna-entropy-03 >>>> >>>> Abstract: >>>> >>>> Load balancing is a powerful tool for engineering traffic across a >>>> network and has been successfully used in MPLS as described in RFC >>>> 6790, "The Use of Entropy Labels in MPLS Forwarding". With the >>>> emergence of MPLS Network Actions (MNA), there is signficant benefit >>>> in being able to invoke the same load balancing capabilities within >>>> the more general MNA infrastructure. >>>> >>>> This document describes a network action for entropy to be used in >>>> conjunction with "MPLS Network Action (MNA) Sub-Stack Solution". >>>> >>>> >>>> >>>> The IETF Secretariat >>>> >>>> >>> _______________________________________________ >>> mpls mailing list -- mpls@ietf.org >>> To unsubscribe send an email to mpls-leave@ietf.org >> _______________________________________________ >> mpls mailing list -- mpls@ietf.org >> To unsubscribe send an email to mpls-leave@ietf.org -- Loa Andersson Senior MPLS Expert Bronze Dragon Consulting loa@pi.nu loa.pi.nu.@gmail.com
- [mpls] Fwd: New Version Notification for draft-li… Tony Li
- [mpls] Re: Fwd: New Version Notification for draf… Stewart Bryant
- [mpls] Re: Fwd: New Version Notification for draf… Loa Andersson
- [mpls] Re: Fwd: New Version Notification for draf… Adrian Farrel
- [mpls] Re: Fwd: New Version Notification for draf… Loa Andersson
- [mpls] Re: Fwd: New Version Notification for draf… Adrian Farrel
- [mpls] Re: Fwd: New Version Notification for draf… bruno.decraene
- [mpls] Re: Fwd: New Version Notification for draf… Stewart Bryant
- [mpls] Re: Fwd: New Version Notification for draf… Tony Li
- [mpls] Fwd: Fwd: New Version Notification for dra… Tony Li
- [mpls] Re: Fwd: New Version Notification for draf… Loa Andersson
- [mpls] Re: Fwd: New Version Notification for draf… Tony Li
- [mpls] Re: New Version Notification for draft-li-… Tony Li
- [mpls] Re: New Version Notification for draft-li-… Tony Li
- [mpls] Re: New Version Notification for draft-li-… Loa Andersson
- [mpls] Re: New Version Notification for draft-li-… Loa Andersson
- [mpls] Re: Fwd: New Version Notification for draf… Loa Andersson
- [mpls] Re: Fwd: New Version Notification for draf… Loa Andersson
- [mpls] Re: New Version Notification for draft-li-… Tony Li
- [mpls] Re: New Version Notification for draft-li-… Tony Li
- [mpls] Re: New Version Notification for draft-li-… bruno.decraene
- [mpls] Re: New Version Notification for draft-li-… Loa Andersson
- [mpls] Re: New Version Notification for draft-li-… Loa Andersson
- [mpls] Re: New Version Notification for draft-li-… Stewart Bryant
- [mpls] Re: New Version Notification for draft-li-… Tony Li
- [mpls] Re: New Version Notification for draft-li-… Loa Andersson
- [mpls] Re: New Version Notification for draft-li-… Greg Mirsky
- [mpls] Re: New Version Notification for draft-li-… Dongjie (Jimmy)
- [mpls] Re: New Version Notification for draft-li-… Tianran Zhou