Re: [Pce] FW: New Version Notification for draft-lee-pce-transporting-te-data-00.txt

Hi,

While i find BGP-LS much more suitable for the distribution of TE data due to:
-BGP is well understood (operations/ troubleshooting, etc); sync, HA issues had be solved 
-Policies framework is comprehensive
-BGP infra in most cases is already in place
-RR construct provides hierarchy
-many more to mention

For the cases where BGP is not wanted (perceived as too complex/ doesn't support data types needed)/ PCE infra has been deployed and practices well understood it would make sense to use it.

>From use cases prospective i think it only addresses (i), the rest could be addressed similarly well by BGP,  optical extensions are to come.

Regards,
Jeff

> On Jul 2, 2014, at 2:51 PM, "Leeyoung" <leeyoung@huawei.com> wrote:
> 
> Hi, 
> 
> We have just published a new PCE draft concerning alternative ways of transporting TE data that may not depend on IGP-TE or BGP-LS. 
> 
> The motivation for this work is a timely update of TE data directly from nodes to PCE(s) to support scenarios like:
> 
> (i) networks that do not support IGP-TE or BGP-LS but want to implement PCE.
> (ii) applications that require accurate and timely TE data that current convergence time associated with flooding is not justified.  
> (iii) reduction of node OH processing of flooding mechanisms (esp. optical transport networks where there are large amounts of traffic data and constraints due to OTN/WSON/Flexi-grid, etc. Note that also BGP-LS is not supported in optical transport networks today)
> 
> Your comment will always be appreciated. 
> 
> Thanks,
> Young (on behalf of other co-authors)
> 
> 
> -----Original Message-----
> From: internet-drafts@ietf.org [mailto:internet-drafts@ietf.org] 
> Sent: Wednesday, July 02, 2014 4:32 PM
> To: Greg Bernstein; Dhruv Dhody; Greg Bernstein; Zhenghaomian; Dhruv Dhody; Leeyoung; Leeyoung; Zhenghaomian
> Subject: New Version Notification for draft-lee-pce-transporting-te-data-00.txt
> 
> 
> A new version of I-D, draft-lee-pce-transporting-te-data-00.txt
> has been successfully submitted by Young Lee and posted to the IETF repository.
> 
> Name:        draft-lee-pce-transporting-te-data
> Revision:    00
> Title:        PCEP Extensions in Support of Transporting Traffic Engineering Data
> Document date:    2014-07-02
> Group:        Individual Submission
> Pages:        20
> URL:            http://www.ietf.org/internet-drafts/draft-lee-pce-transporting-te-data-00.txt
> Status:         https://datatracker.ietf.org/doc/draft-lee-pce-transporting-te-data/
> Htmlized:       http://tools.ietf.org/html/draft-lee-pce-transporting-te-data-00
> 
> 
> Abstract:
>   In order to compute and provide optimal paths, Path Computation
>   Elements (PCEs) require an accurate and timely Traffic Engineering
>   Database (TED). Traditionally this TED has been obtained from a link
>   state routing protocol supporting traffic engineering extensions.
>   This document discusses possible alternatives to TED creation. This
>   document gives architectural alternatives for these enhancements and
>   their potential impacts on network nodes, routing protocols, and
>   PCE.
> 
> 
> 
> 
> Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org.
> 
> The IETF Secretariat
> 
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