Folks,

In Section 2.1, we say that LISP is built on top of four basic design 
principles:

   - Locator/Identifier split
   - Overlay architecture
   - Decoupled data and control-plane
   - Incremental deployability

However, none of these design principles are unique to LISP. The IETF has 
produced many overlay architectures over the years and nearly all of them share 
these characteristics. 

Oddly, the one design principle that *is* truly unique to LISP is omitted from 
the list. That is, the route pull model.

Likewise, In Section 7, we site several use cases to which LISP might be 
applied. However, we say nothing about why LISP might provide a better solution 
than any of the other overlay architectures that the IETF has produced in years 
gone by. Does LISP provide a superior solution because of its one unique 
characteristic? 

In order to fix these problems, I suggest that we make the following changes to 
Section 2.1:

- add a bullet concerning route pull
- add a sentence saying that route pull is the only principle that is unique to 
LISP

A use case should be included in Section 7 only if route pulling makes the LISP 
solution superior to existing solutions.

Ron Bonica

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