Re: [Technical Errata Reported] RFC5880 (7240)

[Dave Katz <[e-mail]>]

Looks fine.  Probably should have stayed in the pool designing a little longer that day.

;-)

—Dave


On Feb 8, 2023, at 10:00 AM, Dave Ward <[e-mail]<mailto:[e-mail]>> wrote:

[External Email. Be cautious of content]


No objection

On Feb 8, 2023, at 9:58 AM, John Scudder <[e-mail]<mailto:[e-mail]>> wrote:

Hi Everyone,

I plan to verify this in the near future (let’s say, Monday Feb 13) unless anyone objects.

Thanks,

—John

On Nov 6, 2022, at 4:27 AM, RFC Errata System <[e-mail]<mailto:[e-mail]>> wrote:

The following errata report has been submitted for RFC5880,
"Bidirectional Forwarding Detection (BFD)".

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You may review the report below and at:
https://urldefense.com/v3/__https://www.google.com/url?q=https:**Aurldefense.com*v3*__https:**Awww.rfc-editor.org*errata*eid7240__;!!NEt6yMaO-gk!DSW_aH2n7cYViXw08rr41mmdkcad5rzUky6aMWE1XW-uhZqqdIELlYuLQ20Sw8Z1cTiyiqHvd7VyqUJIsm_Lmg$&source=gmail-imap&ust=1676483947000000&usg=AOvVaw2N7wKtAdjjKKPeUnjtqiqX__;Ly8vLy8vLy8!!NEt6yMaO-gk!EHWPCqCAY8ZQ4BbHQXq-7RNjoyknVaItfKvMbOORjvBpVA8rRxBUG1qRMUVFWsuuIhuj5bXB9SYBSzfIDA$

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Type: Technical
Reported by: Jeffrey Haas <[e-mail]<mailto:[e-mail]>>

Section: 6.8.1

Original Text
-------------
bfd.LocalDiag

   The diagnostic code specifying the reason for the most recent
   change in the local session state.  This MUST be initialized to
   zero (No Diagnostic).

Corrected Text
--------------
[Proposed text]

bfd.LocalDiag

   The diagnostic code specifying the reason for the most recent
   change in the local session state.  This MUST be initialized to
   zero (No Diagnostic).  It MUST also be re-initialized to zero
   (No Diagnostic) when the local session state transitions to Up.

Notes
-----
RFC 5880 at various points calls out setting the value of bfd.LocalDiag as part of state transitions.  The text defining the feature calls for it to be initialized to zero.  However, it doesn't define under what conditions it should be re-initialized to zero.

One possible place where it may be reinitialized is when the session transitions back to Up, indicating that prior issues may have been cleared.

Instructions:
-------------
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RFC5880 (draft-ietf-bfd-base-11)
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Title               : Bidirectional Forwarding Detection (BFD)
Publication Date    : June 2010
Author(s)           : D. Katz, D. Ward
Category            : PROPOSED STANDARD
Source              : Bidirectional Forwarding Detection
Area                : Routing
Stream              : IETF
Verifying Party     : IESG