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Re: [PWE3] Fat PW - a couple of points I was asked about.

Hello Stewart,
 
   Please see the comments inline.
 
   Best Regards!
        Yang

 
On Dec 6, 2007 5:10 AM, Stewart Bryant <stbryant at cisco.com> wrote:
Yang Yang wrote:
> Hello Stewart,
>     I'm wondering how to use the LB label inside PSN. If LB label is
> only used by the ingress T-PE for load-balancing, maybe it's no
> necessary to carry the LB label across the PSN.
>
>     Best Regards!
>         Yang

It is carried across the PSN.

Any P router that includes the bottom label in its ECMP calculation takes
advantage of it.
 
So, the ingess T-PE adds load-balancing label, and the Ps use the LB label for ECMP calculation.  How does the P notice the existing of the LB label? 
And is it PW load-balancing? I'm a little confused. It's like that the P couldn't get the right information for ECMP calculation and then the T-PE should add some information.
 
 


Stewart


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