RE: [PWE3] PWE Service interworking

[Shahram Davari <Shahram_Davari@pmc-sierra.com>]

Correct.

-Shahram

>-----Original Message-----
>From: Lin, Zhi-Wei [mailto:Zhiwlin@NYCT.com]
>Sent: Friday, June 06, 2003 8:52 AM
>To: Shahram Davari; 'Mark Seery'; Jack Pugaczewski
>Cc: pwe3@ietf.org
>Subject: RE: [PWE3] PWE Service interworking 
>
>
>Hi all,
>
>Sorry to interrupt your very informative discussions, but I 
>have a question.
>In the case of the MPLS (which is our topic?) my understanding 
>is that OAMs
>are always end-to-end? "Segment" OAMs similar to ATM can be 
>created for MPLS
>simply by stacking a new MPLS header?
>
>Thanks for any clarification
>Zhi
>
>
>> -----Original Message-----
>> From: Shahram Davari [mailto:Shahram_Davari@pmc-sierra.com]
>> Sent: Thursday, June 05, 2003 3:56 PM
>> To: 'Mark Seery'; Jack Pugaczewski
>> Cc: pwe3@ietf.org
>> Subject: RE: [PWE3] PWE Service interworking 
>> 
>> 
>> Mark,
>> 
>> 1) Each layer should have segment OAM mechanism that applies 
>> only to that layer.
>> 2) End-to-end OAM at each layer corresponds to the 
>> terminating points of that layer.
>> 
>> -Shahram
>> 
>> >-----Original Message-----
>> >From: Mark Seery [mailto:mark@mseery.com]
>> >Sent: Thursday, June 05, 2003 3:48 PM
>> >To: Jack Pugaczewski
>> >Cc: pwe3@ietf.org
>> >Subject: RE: [PWE3] PWE Service interworking 
>> >
>> >
>> >--- Jack Pugaczewski <jtpugac@qwest.com> wrote:
>> >> Segment and End-to-End OAM are utilized on an every
>> >> day basis and a
>> >> strategic part of the fault isolation process.  More
>> >> specifically, the
>> >> ability to generate an End-to-End at an intermediate
>> >> node is essential.
>> >> This allows the client (or client application) to
>> >> initiate the request to a
>> >> single element management system.
>> >> 
>> >> PJMWBGJJREGTATALDBJHJHSLDHGSDWJAMY
>> >
>> >Thanks Jack, 
>> >
>> >1) Is it important that every layer be able to do a
>> >segment OAM on every segment, or just the segments
>> >that logically belong to that layer (i.e. as
>> >delineated by access points of that layer)? For
>> >example, in the following network:
>> >
>> > 1      2        3    4     5      6        7         
>> >CE----ATM_SW-----PE----P----PE----ATM_SW----CE
>> >
>> >From the perspective of the ATM layer (assume VCC, no
>> >VPC), Is a segment between 2 and 6 or are 2-3, 3-4,
>> >4-5, and 5-6 also considered segments (from the
>> >perspective of your requirements as an operator).
>> >
>> >2) When an end-to-end OAM is initiated from an
>> >intermediate node, what is considered end-to-end? For
>> >example, in the following network:
>> >
>> >
>> > 1      2        3    4     5      6        7         
>> >CE----FR_SW-----PE----P----PE----ATM_SW----CE
>> >
>> >If an end-to-end OAM is initiated at "6" towards the
>> >direction of "1", where would you expect the OAM to
>> >terminate/take action?
>> >
>> >Thanks,
>> >Mark
>> >
>> >
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>> >
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>
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