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RFC 6038, "Two-Way Active Measurement Protocol (TWAMP) Reflect Octets and Symmetrical Size Features", October 2010

Source of RFC: ippm (ops)
See Also: RFC 6038 w/ inline errata

Errata ID: 6409
Status: Verified
Type: Technical
Publication Format(s) : TEXT
Reported By: Nikolai Malykh
Date Reported: 2021-01-25
Verifier Name: Martin Duke
Date Verified: 2021-01-26

Section 4.2 says: 

   The Padding Length SHOULD be >= 56 octets when specifying a test
   session using the Authenticated or Encrypted TWAMP-Test modes to
   allow for the truncation process that TWAMP recommends, see Section
   4.2.1 of [RFC5357].

   The Padding Length SHALL be > the Length of padding to reflect when
   specifying a test session using the OPTIONAL Reflect Octets mode.

   In Unauthenticated TWAMP-Test mode, the Padding Length SHALL be >= 27
   + Length of padding to reflect octets when specifying a test session
   using both the OPTIONAL Reflect Octets mode and the truncation
   process that TWAMP recommends, see Section 4.2.1 of [RFC5357].

   In Authenticated or Encrypted TWAMP-Test modes, the Padding Length
   SHALL be >= 56 + Length of padding to reflect octets when specifying
   a test session using both the OPTIONAL Reflect Octets mode and the
   truncation process that TWAMP recommends, see Section 4.2.1 of
   [RFC5357].

It should say:

   The Padding Length SHOULD be >= 64 octets when specifying a test
   session using the Authenticated or Encrypted TWAMP-Test modes to
   allow for the truncation process that TWAMP recommends, see Section
   4.2.1 of [RFC5357].

   The Padding Length SHALL be > the Length of padding to reflect when
   specifying a test session using the OPTIONAL Reflect Octets mode.

   In Unauthenticated TWAMP-Test mode, the Padding Length SHALL be >= 27
   + Length of padding to reflect octets when specifying a test session
   using both the OPTIONAL Reflect Octets mode and the truncation
   process that TWAMP recommends, see Section 4.2.1 of [RFC5357].

   In Authenticated or Encrypted TWAMP-Test modes, the Padding Length
   SHALL be >= 64 + Length of padding to reflect octets when specifying
   a test session using both the OPTIONAL Reflect Octets mode and the
   truncation process that TWAMP recommends, see Section 4.2.1 of
   [RFC5357].

Notes:

Invalid required padding size (56 instead of 64) for modes with authentication and encryption.

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