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

[Ramon Casellas <[e-mail]>]

El 17/07/2014 18:42, Leeyoung escribió:
> Hi Jeff,
>
> I have a similar comment with Dhruv. I am wondering how BGP-LS packages together TE information. Wouldn't it require IGP-TE to give TE link-state information to BGP-LS speaker, then BGP-LS packages them into a summary TE-info? If this is the case, I am not sure how convergence time of BGP-LS can improve that of IGP-TE? Please correct me if my understanding is not wrong.

Young, all

As much as I am ok with the approach of using PCEP, I am not sure what 
you say is always the case. I would guess that the common, 
straightforward source of link-state information for BGP-LS is the 
IGP-TE, but it does not preclude other sources, including, as per 
draft-ietf-idr-ls-distribution direct, static and unknown.

Also, regarding incremental updates, I don't see why they are not 
possible with BGP-LS, but I would need to re-read the draft again to be 
sure. Can an incremental update consist of a  BGP update message with 
MP_REACH attribute listing just the descriptors of the link/node and the 
link state attribute just encode the TE attributes that have changed? I 
may be wrong, but is it stated somewhere that all TLVs need to be listed 
at each update?

Thanks
Ramon