IGP TE Metric Extensions

Muthu Arul Mozhi Perumal <muthu.arul@gmail.com> Thu, 31 May 2018 01:07 UTC

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From: Muthu Arul Mozhi Perumal <muthu.arul@gmail.com>
Date: Thu, 31 May 2018 06:36:58 +0530
Message-ID: <CAKz0y8zTE_ZkN6_MdXF0hxoRJG81TpBJAk9vtvjYmzWpY6=FHw@mail.gmail.com>
Subject: IGP TE Metric Extensions
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Both RFC 7810 and RFC 7471 say that:

   The measurement interval, any filter coefficients, and any
   advertisement intervals MUST be configurable per sub-TLV.

   Additionally, the default measurement interval for all sub-TLVs
   SHOULD be 30 seconds.

However, both RFCs initially say that they only describe mechanisms for
disseminating performance information and methods of measurements is
outside their scope.

Moreover, for a first time reader, it seems to suggest that the measurement
interval and filter coefficient must be supported and configurable under
the IGP. In a system supporting multiple IGPs, I would expect that they be
implemented outside the IGP and the IGPs just disseminate the information
provided to them.

Thoughts, especially from an implementation standpoint?

Regards,
Muthu