Hi,

I'm sorry I didn't catch this earlier (attention elsewhere).

On 3/3/15 11:09 PM, Adrian Farrel wrote:
> ----------------------------------------------------------------------
> DISCUSS:
> ----------------------------------------------------------------------
>
> Thank you for this document. It is really helpful to have a clear
> introduction to LISP, and I appreciate the hard work that has gone into
> producing this text.
>
> I have a small Discuss that is easily fixed. The essence is that you 
> should limit this document to a description of LISP and not try to use
> it to bash other solutions.
>
> In Section 4.2
>
>    On the contrary BGP is a
>    push architecture, where the required network state is pushed by
>    means of BGP UPDATE messages to BGP speakers.
>
> You will be aware of RFC 5291 and the use of ORF to make BGP a pull-mode
> protocol.
>
> (I won't say to you that LISP is push mode because a Map-Reply pushes 
> the mapping information from the map server to the client :-)
>
> So, my advice is to describe LISP in this document and to not make
> comments about other systems. It isn't a beauty contest and it isn't
> wise to try to say "my system is better/different from yours".
>
> The solution is to just remove this sentence.
>
> Similarly in 7.1
>
>    BGP is the standard protocol to implement inter-domain routing.  With
>    BGP, routing information are propagated along the network and each
>    autonomous system can implement its own routing policy that will
>    influence the way routing information are propagated.  The direct
>    consequence is that an autonomous system cannot precisely control the
>    way the traffic will enter the network.
>
>    As opposed to BGP, a LISP site can strictly impose via which ETRs the
>    traffic must enter the the LISP site network even though the path
>    followed to reach the ETR is not under the control of the LISP site.
>
> Let's not get into the "BGP this, BGP that" debate. Just remove the 
> first paragraph and the first four words of the second paragraph. That
> way you avoid all contention and write a document about LISP.


I would go further.  Whether LISP is a pull- or a push architecture (or
something else) is entirely a characteristic of the mapping system
used.  The one in common use today is indeed a pull architecture.  The
text discussing push/pull, therefore, should be addressed to the mapping
system.

Eliot


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