No, I don't think so. As long as a label for a given 32/ or 128/ FEC is 
attached to a packet, no matter from whichever label distribution protocol this 
label is learnt, the packet would definitely be forwarded to the node 
identified by that FEC along the shortest path.

Could you give a concrete example to illustrate why the forwarding result is 
rather poor?

Best regards,
Xiaohu

> -----邮件原件-----
> 发件人: [email protected] [mailto:[email protected]] 代表 Robert Raszuk
> 发送时间: 2014年5月21日 15:41
> 收件人: Xuxiaohu
> 抄送: Hannes Gredler; [email protected]; Alvaro Retana (aretana); John G.
> Scudder; Yakov Rekhter
> 主题: Re: [spring] 答复: draft-gredler-spring-mpls-05.txt as SPRING WG
> document
> 
> If your SR segments are to be engineered by set of SR headers for a given FEC
> and anywhere in the network you will suddenly choose LDP learned label for a
> given FEC the forwarding results will be rather poor don't you think ?
> 
> r.
> 
> On Wed, May 21, 2014 at 9:33 AM, Xuxiaohu <[email protected]> wrote:
> > Robert,
> >
> >> -----邮件原件-----
> >> 发件人: [email protected] [mailto:[email protected]] 代表 Robert
> Raszuk
> >> 发送时间: 2014年5月21日 15:25
> >> 收件人: Xuxiaohu
> >> 抄送: Hannes Gredler; Yakov Rekhter; [email protected]; Alvaro Retana
> >> (aretana); John G. Scudder
> >> 主题: Re: [spring] draft-gredler-spring-mpls-05.txt as SPRING WG
> >> document
> >>
> >> Xiaohu,
> >>
> >> > Since there are just label distribution protocols which don't
> >> > affect the route selection at all, why do you care about that
> >> > consistency among
> >> routers?
> >>
> >> We are talking about label selection and not route selection.
> >>
> >> This is about the same FEC so same route hence route selection does
> >> not come to the picture.
> >
> > Sure. Then what's the problem if there is inconsistency of label selection
> among routers (e.g., some routers prefer label bindings learnt from ISIS while
> others prefer label bindings learnt from LDP)?
> >
> > Best regards,
> > Xiaohu
> >
> >> Thx,
> >> R.
> > _______________________________________________
> > spring mailing list
> > [email protected]
> > https://www.ietf.org/mailman/listinfo/spring
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