Subject: [mpls] [Technical Errata Reported] RFC4379 (1714)

From: RFC Errata System <[email-masked]>
Date: Thu, 12 Mar 2009 07:32:08 -0700 (PDT)

The following errata report has been submitted for RFC4379,
"Detecting Multi-Protocol Label Switched (MPLS) Data Plane Failures".

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You may review the report below and at:
http://www.rfc-editor.org/errata_search.php?rfc=4379&eid=1714

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Type: Technical
Reported by: Yaakov (J) Stein <[email-masked]>

Section: 3

Original Text
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The TimeStamp Sent is the time-of-day (in seconds and microseconds,
according to the sender's clock) in NTP format [NTP] when the MPLS
echo request is sent.  

Corrected Text
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The TimeStamp Sent is the time-of-day in seconds and microseconds,
according to the sender's clock, when the MPLS echo request is sent.  

OR

The TimeStamp Sent is the time-of-day in NTP format [NTP], 
according to the sender's clock, when the MPLS echo request is sent.  

Notes
-----
Similarly, the figure at the beginning of section 3 labels the timestamp fields
as seconds and microseconds.

The text is self-contradictory since in NTP format the second field
of 32 bits is fractional seconds, not microseconds. 2^-32 second is about 200 picoseconds - much less than 1 microsecond.

Instructions:
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RFC4379 (draft-ietf-mpls-lsp-ping-13)
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Title               : Detecting Multi-Protocol Label Switched (MPLS) Data Plane Failures
Publication Date    : February 2006
Author(s)           : K. Kompella, G. Swallow
Category            : PROPOSED STANDARD
Source              : Multiprotocol Label Switching
Area                : Routing
Stream              : IETF
Verifying Party     : IESG