RE: [bmwg] IGP/Data-plane convergence proposal

["Shankar Rao" <[e-mail]>]

I support this effort, and recommend that this BMWG undertake this work
as a WG deliverable. 

As as service provider, we find this work to be directly applicable and
relevant to measuring key availability parameters of carrier networks.

Shankar.

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>Date: Wed, 23 Apr 2003 16:22:25 -0400
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>From: Al Morton <[e-mail]>
>Subject: [bmwg] IGP/Data-plane convergence proposal
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>BMWG,
>
>Now that we have made significant progress toward completing the OSPF 
>Convergence I-Ds, it has been proposed that the BMWG support a new work

>item relative to 3 individually-submitted I-Ds, titled:
>
>"Benchmarking Applicability for IGP Route Convergence" 
>http://www.ietf.org/internet-drafts/draft-poretsky-igp-convergence-app-
>00.txt
>"Terminology for Benchmarking IGP Convergence"
>http://www.ietf.org/internet-drafts/draft-poretsky-igp-convergence-term
-00.txt
>"Benchmarking Methodology for IGP Convergence"
>http://www.ietf.org/internet-drafts/draft-poretsky-igp-convergence-meth
-00.txt
>
>
>Goal:
>
>If undertaken by the WG, the objective is to produce applicability, 
>terminology, and methodology drafts that specify the benchmarking of 
>IGP convergence in routers and systems under test.  Route convergence 
>is assessed by active measurements of packet transfer, called data 
>plane measurements to distinguish them from measurements of the control

>plane.
>
>Scope:
>
>The focus of this effort is to benchmark the route convergence of 
>Routers running a link state IGP such as OSPF or ISIS.  Other routing 
>protocols are outside the scope of this effort.
>
>Motivation:
>
>Service Providers seek minimal IGP Convergence time, and that time is a

>key metric of system/network design and router design. Network 
>convergence time may be improved through deployment of fast converging 
>routers.
>
>Network users consider packet loss a key service quality metric. 
>Intervals of high packet loss are externally observable events having 
>direct impact on their application performance. IGP Route Convergence 
>time is a Direct Measure of Quality (DMOQ) when benchmarking the data 
>plane's ability to support continuous flows.
>
>For these reasons it is important to develop a standard methodology and

>terminology for benchmarking router IGP convergence that measures 
>performance in the data plane. The applicability document describes all

>of the factors that influence a convergence measurement, and how a 
>purely black box test can be designed to account for them.
>
>Schedule:
>
>If you wish to offer your thoughts as to whether the BMWG should or 
>should not undertake the effort as a WG deliverable, please email your 
>comments to this list or [e-mail] no later than 21 May 03.
>
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