Re: MPLS TE

Well, you usually have IP on MPLS, so anything inside the LSP gets
affected (stating the obvious, obviously).

TE does kind of QoS by bundles using integrated services (RSPV).
For so doing, it needs "bundle" definitions (your LSPs forwarding
equivalence class) and QoS contracts (like BW needs).
And it can recalculate the LSP based on the contracts and current
network state, for what you need a link state routing proto enhanced to
distribute link utilization data.

Lots of tuning knobs to play with, kind of support of path protection
(i.e. par to SONET), fast reroute, ...
The most difficult to grasp concept, AFAIK, is that the bundle QoS does
not provide actual traffic QoS assurance (i.e. intra bunble QoS) which
would have to be provided by other means.

HTH,
-Carlos

JR Garcia @ 22/12/2009 19:08 -0300 dixit:
> the TE tunnel only affects the label switched path, not IP traffic.
> i never really found any good high level overview docs on the
> technology...so afraid i cant help you much there.
>
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-- 
Carlos G Mendioroz  <tron_at_huapi.ba.ar>  LW7 EQI  Argentina
Blogs and organic groups at http://www.ccie.net