Subject: [mpls-tp] FW: MPLS WG Last call on draft-ietf-mpls-loss-delay-01

From: Linda Dunbar <[email-masked]>
Date: Thu, 10 Feb 2011 16:36:34 +0000

My apology if you’ve seen this email. Mpls-tp rejected this one due to my email address change, so I am just re-send it. –Linda Dunbar

_____________________________________________
From: Linda Dunbar
Sent: 2011年2月8日 15:58
To: 'Ross Callon'; [email-masked]; [email-masked]; [email-masked]
Subject: RE: MPLS WG Last call on draft-ietf-mpls-loss-delay-01

I have some issues with this draft:
There had been a lot of discussions on email list on what should Initiator (querier) do when not receiving a response from far end.

Ben Jenkins suggested the following text (http://www.ietf.org/mail-archive/web/mpls/current/msg05696.html) which is not incorporated to this new draft yet.

      When initiating an LM operation, the far end may require a period of time to become ready for the requested measurement operation or the far end may not be able to support the requested measurement. Under those circumstances, LM queries MAY simply be discarded, and the querier expecting a response SHOULD be prepared for this situation. Alternatively, the receiver MAY respond, possibly in a rate-limited manner, to queries received during this period with an appropriate notification code.  The querier should abort the measurement after not receiving any positive feedback when a specified timer expires.

Section 3.5.3: It stated:
       When a query is received with a Session Query Interval that is too low for the receiver to support, the receiver SHOULD include this object when it generates an error response.

Question:
      Which error code should be used? Is it 0x18:Error - Unsupported Query Interval? If Yes, should add this to the sentence.

      What if the Querier indicates "0x2: No Response Requested"?

Section 4.1.5:
*       Should allow the Loss measurement to be calculated somewhere else, in case the initiator (querier) doesn't have the capacity to do the calculation.
*       Should add a description that measurement is to be stopped when far end not respond anymore.

Linda Dunbar

-----Original Message-----
From: [email-masked] [mailto:[email-masked]] On Behalf Of Ross Callon
Sent: Sunday, February 06, 2011 9:33 PM
To: [email-masked]; [email-masked]; [email-masked]
Subject: [mpls] MPLS WG last call on draft-ietf-mpls-loss-delay-01

Working Group,

This is to start a four week working group last call on
" Packet Loss and Delay Measurement for MPLS Networks"
(draft-ietf-mpls-loss-delay-01).

Please send comments to the mpls at ietf.org mailing list.

Also, please note that the related document
" draft-ietf-mpls-tp-loss-delay-profile-02.txt" is being last called in
parallel on the mpls-tp email list (mpls-tp at ietf.org).

This working group last call ends on Monday March 7, 2011.

Ross, Loa, and George

MPLS WG co-chairs
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