Re: New Draft- BFD Express Path

[Mach Chen <[e-mail]>]

Hi Spencer,

I think using BFD for performance monitoring is a reasonable way. Two years 
ago, we wrote a draft for the same purpose with relevant BFD extensions, it 
could be found at: http://tools.ietf.org/html/draft-guo-bfd-pm-extension-01. 
The reason for choose BFD for performance monitoring is because BFD is a 
protocol independent technology, BFD-based solution would provide a general 
mechanism for performance monitoring, no matter what the path is IP, MPLS or 
other types.

As Vishwas said in another email, you should consider the compatibility 
issue especially when you want to deploy BFD Authentication at the same 
time.

Best regards,
Mach
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From: "Spencer Giacalone" <[e-mail]>
Sent: Tuesday, November 23, 2010 11:35 PM
To: <[e-mail]>
Subject: New Draft- BFD Express Path

> Dear WG,
>
> A new draft, called “BFD Express Path”
> (draft-giacalone-bfd-express-path-00) has been submitted for review.
> The primary intent of this draft is to mitigate capability gaps and
> exploit opportunities in certain performance sensitive networks. BFD
> Express Path creates a scalable, flexible, and integrated framework
> for gathering detailed network performance information. This
> information could be used to influence routing or traffic engineering,
> or for other network management purposes. It is assumed that further
> drafts will provide routing protocol extensions. BFD Express Path is
> focused on real world issues, and is aimed at (for example) the
> production network that I am responsible for. I invite discussion,
> comments, or questions. The abstract is as follows, and the draft
> itself is posted on the WG page:
>
> “In certain networks, such as, but not limited to, financial
> information networks (e.g. stock market data providers), network
> performance criteria (e.g. latency) have become (or are becoming) as
> (or more) critical to data path selection than other metrics. This
> document describes extensions to the BFD protocol, such that
> network performance information can be gathered in a scalable fashion,
> and subsequently used (by other protocols) to make path selection
> decisions. These extensions will also provide granular performance
> monitoring information.”
>
> Regards,
>
> Spencer