[mpls] Simultaneity of multi-level HPSM (Re: Poll on draft-koike-mpls-tp-temporal-hitless-psm)

[Yoshinori Koike <[e-mail]>]

Hi Zhenlong,

Thank you for your comment. I'm sorry for this late reply.

As we wrote in the same section, a combination of multi-level and 
"simultaneous monitoring" is the most powerful tool for accurately 
diagnosing the performance of a transport path.

However I think it's better to add some texts for clarification in the 
section. We will refine the section using your proposed text next time 
we update the draft.

Editors already discussed the necessity of simultaneity of multi-level 
HPSMs before. The following is just a reference information.

Our fist priority is to request a tool to diagnose a degraded point 
without affecting transport path. From that perspective, a single-level 
HPSM is mandatory.

Secondly, multi-level HPSMs can make the detection of a degraded point 
more efficient. Therefore, it is an option in the current draft.

In addition, the simultaneity of multi-level HPSMs is related to an 
accuracy of the measurements which can make the detection much more 
efficient. Therefore, it is also an option. (I understand that it is not 
clear in the texts.)

Best regards,

Yoshinori

(2012/02/13 9:52), Zhenlong Cui wrote:
> Yes/support.
>
> I would like to raise some comments regarding section 6.
>
> I think performance monitoring is different from the survivability analysis, as it has a certain time-dependent behavior. Therefore,
> I think the on-demand single-level segment monitoring must "timely coordinate" with the other levels that include the pro-active
> end-to-end monitoring.
>
> I suggest adding some description to section 6 along these lines:
>
>     In order to increase the accuracy of performance monitoring,
>     on-demand multi-level performance monitoring must have the ability to
>     execute at all levels at the same time.
>
> Best Regards,
> zhenlong
>
>> -----Original Message-----
>> From: [e-mail] [mailto:[e-mail]] On Behalf Of Loa Andersson
>> Sent: Wednesday, February 08, 2012 10:27 PM
>> To: [e-mail]; MPLS-TP ad hoc team; [e-mail]; Ross Callon; George
>> Swallow; Adrian Farrel
>> Subject: [mpls] Poll on draft-koike-mpls-tp-temporal-hitless-psm
>>
>> Working Group,
>>
>> this is to start a two week poll to see if there is support to make
>>
>>      draft-koike-mpls-tp-temporal-hitless-psm-04
>>
>> mpls working group drafts.
>>
>> Pleased send your comments to the mpls working group mailing list
>> ([e-mail]).
>>
>> This poll ends February 22, 2012!
>>
>> Loa
>> for the mpls wg chairs
>>
>>
>> --
>>
>>
>> Loa Andersson                         email: [e-mail]
>> Sr Strategy and Standards Manager            [e-mail]
>> Ericsson Inc                          phone: [phone]
>>                                                [phone]
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-- 
Yoshinori Koike
[e-mail]