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Re: [OSPF] Working Group Last Call for OSPF Traffic Engineering (TE) Metric Extensions (draft-ietf-ospf-te-metric-extensions-06.txt)

Dhruv Dhody <dhruv.dhody@huawei.com> Tue, 04 November 2014 15:31 UTC

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From: Dhruv Dhody <dhruv.dhody@huawei.com>
To: John E Drake <jdrake@juniper.net>, "Acee Lindem (acee)" <acee@cisco.com>, "draft-ietf-ospf-te-metric-extensions@tools.ietf.org" <draft-ietf-ospf-te-metric-extensions@tools.ietf.org>
Thread-Topic: [OSPF] Working Group Last Call for OSPF Traffic Engineering (TE) Metric Extensions (draft-ietf-ospf-te-metric-extensions-06.txt)
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Date: Tue, 04 Nov 2014 15:31:04 +0000
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Subject: Re: [OSPF] Working Group Last Call for OSPF Traffic Engineering (TE) Metric Extensions (draft-ietf-ospf-te-metric-extensions-06.txt)
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Hi John, 

Snip to the only open point..

(snip)

> > >(2) A reference to PCE should also be added along with the mention
> of
> > >ALTO server. See
> > >http://datatracker.ietf.org/doc/draft-ietf-pce-pcep-service-aware/
> > >In fact the steps mentioned for the ingress in section 3 are
> > >applicable for a stateful PCE as well.
> 
> [JD]  Why?
>
I feel just the following minor change should be fine in the introduction section.  

OLD:
   The data distributed by OSPF TE Metric Extensions is meant to be used
   as part of the operation of the routing protocol (e.g. by replacing
   cost with latency or considering bandwidth as well as cost), by
   enhancing CSPF, or for other uses such as supplementing the data used
   by an Alto server [Alto]. With respect to CSPF, the data distributed
   by OSPF TE Metric Extensions can be used to setup, fail over, and
   fail back data paths using protocols such as RSVP-TE [RFC3209].[
   Draft-ietf-mpls-te-express-path] describes some methods for using
   this information to compute Label Switched Paths (LSPs) at the LSP
   ingress.
NEW:
   The data distributed by OSPF TE Metric Extensions is meant to be used
   as part of the operation of the routing protocol (e.g. by replacing
   cost with latency or considering bandwidth as well as cost), by
   enhancing CSPF, or for other uses such as supplementing the data used
   by a PCE [RFC4655] or an Alto server [Alto]. With respect to CSPF, the data distributed
   by OSPF TE Metric Extensions can be used to setup, fail over, and
   fail back data paths using protocols such as RSVP-TE [RFC3209].[
   Draft-ietf-mpls-te-express-path] and [draft-ietf-pce-pcep-service-aware] 
   describes some methods for using
   this information to compute Label Switched Paths (LSPs) at the LSP
   ingress and PCE respectively.  

This would let the reader know that PCE can also use this information along with the Ingress/ALTO server. 
 
(snip)

Regards,
Dhruv

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