FW: Questions on draft-ietf-mpls-bundle-00

["Atkinson, Stephen" <steve.atkinson@netplane.com>]

I didn't get any comments on this. Would anyone care to 
respond?

Thanks,
steve atkinson

>  -----Original Message-----
> From: 	Atkinson, Stephen  
> Sent:	Monday, September 10, 2001 4:11 PM
> To:	ccamp@ops.ietf.org
> Subject:	Questions on draft-ietf-mpls-bundle-00
> 
> I've been reading the draft-ietf-mpls-bundle-00 spec and have 
> a couple questions.
> 
> Basically I'm trying to focus on why signaling unnumbered 
> components using
> Explicit Indication by Interface ID is different from all 
> other cases. This being the
> only case which specifies an interface (component) for each 
> direction of a
> bi-directional LSP.
> 
> Bundling section 3.3.2 (Explicit Indication) requires that 
> the upstream node specify
> the component interface to use in each direction when setting 
> up bi-directional
> LSPs using unnumbered components.
> 
> Bundling section 3.3.1 (Implicit Indication) doesn't have 
> this requirement. Apparently
> when signaling using "Implicit Indication" (for a 
> bi-directional LSP) the reverse direction
> can be inferred. Is this true? If so is this behavior 
> specified anywhere?
> 
> Also, when signaling a bi-directional LSP using numbered 
> components the
> reverse direction component can apparently be inferred using 
> Implicit Indication or 
> Explicit Indication by Interface ID. Is this true? 
> 
> Assuming the statements above are correct. Why must a 
> bi-directional LSP being setup using
> Explicit Indication and unnumbered components, specify a 
> component for each direction, while
> each of the following only requires specifying a single 
> component (or interface)?
> 
>    - unnumbered component signaled implicitly
>    - numbered component signaled implicitly
>    - numbered component signaled explicitly
>    - unnumbered interface (not bundling) signaled implicitly 
> or explicitly
>    - numbered interface (not bundling) signaled implicitly or 
> explicitly
> 
> 
> Thanks,
> steve atkinson
> 
> 
>