The MPLS WG Archive

[Chatur sharp <chatur_b@yahoo.com>]

Shahram and Eric( Gray and Rosen)

This is exactly, what we discussed on the mailing
list yesterday. And it seems to hold all the threads
togather.

However, the concern is this: is it just a quick
fix solution/explaination or was this the intent 
of the draft in the first place ?

I guess it is time for anyone using NULL label as
the sole label to SPEAK UP.

C.




--- Eric Rosen <erosen@cisco.com> wrote:
> 
> My proposal is to replace the requirement that
> explicit nulls only appear as
> the sole  label on the stack with  the requirement
> that they  only appear at
> the bottom of the stack. 
> 
> This doesn't change the fact that the S bit needs to
> be on when these labels
> appear. 
> 
> We used well-known values so that an implementation
> wouldn't have to look up
> the label in  its database of allocated label
> entries, only  to find that it
> then needs  to look up  an IP destination  address. 
> Checking a  label value
> against a  couple of well  known values is  much
> simpler than doing  a table
> lookup. 
>  
> 
> 


=====
I am willing to learn,  if you care to teach.
I am willing to teach, if you care to learn.

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