Re: [PWE3] S-PE in stitching architecture document

The U-PE is at the provider edge, just as the PE in the single hop case,
and looks just like a PE from the point of view of the service.  U-PR
suggests something buried in the network.

What about PSR (PW switching router) and PER (PW edge router)?

Matthew

                      Luca Martini                                                                                                     
                      <lmartini@cisco.         To:      Matthew BOCCI/GB/ALCATEL@ALCATEL                                               
                      com>                     cc:      pwe3-bounces@ietf.org, pwe3@ietf.org, George Swallow <swallow@cisco.com>,      
                      Sent by:                 stbryant@cisco.com                                                                      
                      pwe3-bounces@iet         Subject: Re: [PWE3] S-PE in stitching architecture document                             
                      f.org                                                                                                            

                      01/08/2005 16:11                                                                                                 

ok how about S-PR and U-PR ?

Or are these not Routers ?

Switching point Provider LSR and Ultimate provider LSR ?

Luca

Matthew.Bocci@alcatel.co.uk wrote:
> Loa and all,
>
> Thanks for your comments. If U-PE clashes with another definition
> elsewhere, then we will certainly have to revisit this name.
>
> I agree that we have to be careful where we do PW switching. An objective
> is to constrain the scaling and complexity issues, and the points where
> policy may be applied to PWs, to specific elements in the network. Hence
> the description of the network architecture in terms of "PWE3 domains."
>
> Regards,
>
> Matthew
>
>
>
>

>                       Loa Andersson

>                       <loa@pi.se>              To:      George Swallow
<swallow@cisco.com>
>                       Sent by:                 cc:
stbryant@cisco.com, pwe3@ietf.org, Matthew BOCCI/GB/ALCATEL@ALCATEL

>                       pwe3-bounces@iet         Subject: Re: [PWE3] S-PE
in stitching architecture document
>                       f.org

>

>

>                       28/07/2005 15:52

>

>
>
>
>
> Matthew, Stewart,
>
> while we are at it picking on PE naming, please note that U-PE is
> "taken", in the draft-ietf-l2vpn-l2-framework-05.txt and also
> documented in rfc4026 it stands for User-facing PE. The concept
> is used for a situation where the PE functionality are distribute
> over more than one router, a user facing PE and a network facing
> PE. I think that we could avoid future confusion by changing
> name.
>
> btw, I think we should very carefully discuss where we need and
> allow pw stiching.
>
> /Loa
>
> George Swallow wrote:
>> Mathew, Stewart -
>>
>> I think both the name and definition of the S-PE should change.  While
>> canonical example and most pressing application for stitching is at a
>> provider's edge, I don't see any reason to constrain the stitching point
>> to a PE.  One could imagine applications that might find stitching
>> useful at other points.
>>
>> ...George
>>
>> ========================================================================
>> George Swallow             Cisco Systems                  (978) 936-1398
>>                            1414 Massachusetts Avenue
>>                            Boxborough, MA 01719
>>
>>
>>
>> _______________________________________________
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>
>
> --
> Loa Andersson
>
> Principal Networking Architect
> Acreo AB                           phone:  +46 8 632 77 14
> Isafjordsgatan 22                  mobile: +46 739 81 21 64
> Kista, Sweden                      email:  loa.andersson@acreo.se
>                                             loa@pi.se
>
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>
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