Re: [mpls] Text proposal on draft-ietf-mpls-tp-aps-updates

"Adrian Farrel" <adrian@olddog.co.uk> Thu, 01 September 2016 09:10 UTC

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From: Adrian Farrel <adrian@olddog.co.uk>
To: "'Ryoo, Jeong-dong '" <ryoo@etri.re.kr>, mpls@ietf.org
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Date: Thu, 01 Sep 2016 10:10:14 +0100
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Cc: draft-ietf-mpls-tp-aps-updates.chairs@ietf.org
Subject: Re: [mpls] Text proposal on draft-ietf-mpls-tp-aps-updates
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Jeong-dong, all,

Although I don't have an implementation, I am in favour of fixing our RFCs, so I support moving this document forward.

The motivation for your changes looks good. Just some polish to what you propose...

> 4.3.   Operation related to State Transition Table Lookup
>
> In addition to the rules related to the state transition table 
> lookup listed in Section 11 of [RFC7271], the following rule is 
> also applied to the operation related to the state transition 
> table lookup:   
>  O When the local SF-P is cleared and the priorities of the 
>    local and remote requests are re-evaluated, 
>    the last received remote message may not be valid any more 
>    due to the previous failure of the protection path and only 
>    the local request SHALL be evaluated assuming that the 
>    remote request is NR. 

Suggest to break this into two sentences for clarity. I think I have captured your meaning.

  O When the local SF-P is cleared and the priorities of the 
    local and remote requests are re-evaluated, 
    the last received remote message may not be valid any more 
    due to the previous failure of the protection path. Therefore,
    the last received message MUST be treated as if it were NR
    and only the local request shall be evaluated.

Thanks,
Adrian