Re: [Int-area] new I-D available - tunnel issues

[Joe Touch <touch at ISI.EDU>]

John.zhao wrote:
> Hi, Joe
>
> 	Thanks. So it is can be learnt that GRE,Mini Encapsulation seem also
> can be discussed here, right?

We intend to include broader discussion of other encapsulations in 
future versions; this was intended to be an initial attempt, and 
omissions were not intentional.

We've already received suggestions to include GRE. Can you please 
provide info on Mini Encapsulation, though?

Note that we've also had a suggestion to include MPLS. MPLS is more like 
a conventional L2 layer, which not only encapsulates and decapsulates, 
but also adds new hop-by-hop forwarding. I think it's important to 
distinguish tunneling from L2 or other conventional protocol layering, 
and I believe this is easy as follows:

   tunnels:
	- encaps/decaps of new headers at the endpoints
	- NO new mechanism between the endpoints

   other protocol layering
	- encaps/decaps of new headers at the endpoints
	- new mechanism between the endpoints that may or may
	not rewrite thes headers

Joe

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