The MPLS WG Archive

[Eric Gray <eric.gray@sandburst.com>]

Kireeti,

    Thanks, and thanks to Vach as well.

    I guess the bottom line is - what Yakov said applies:
i.e. (paraphrasing) all self references refers to references
other than un-numbered interface IDs.  This might be a
point that would be covered in the BCP you mentioned...

--
Eric Gray

You wrote:

> Hi Eric,
>
> >     Out of curiosity, how many un-numbered interfaces can
> > B have that are known to it as interface 1?
>
> One *outgoing* interface.  To clarify, in the picture below,
> the LSP goes left to right, and the interface indices are
> assigned by the LSR to the left.  So, the index on the AB
> link was assigned by A.  B of course also could have assigned
> an index to the BA link; if so, the value should be distinct
> from any other index assigned by B.  So, the BA link could not
> (in this instance) get an index of 1.  However, B could assign
> 1 to the BA link if it assigns 2 to the BC link.
>
>              1        1        1
>          A -----> B -----> C -----> D
>
> Kireeti.