Re: [lisp] RFC6830bis and multiprotocol support

["Victor Moreno (vimoreno)" <[e-mail]>]

I’m strongly supportive of this proposal as it completes the necessary specifications to support the L2 services proposed in the eid-mobility draft.

Victor

On Nov 29, 2017, at 4:54 PM, Fabio Maino (fmaino) <[e-mail]<mailto:[e-mail]>> wrote:

sounds good.

Fabio

On 11/29/17 3:13 PM, Dino Farinacci wrote:
I’d also add before the last sentence:

If the N-bit and V-bit are 0 when the P-bit is set, the middle 16-bits are set to 0.

Dino

On Nov 29, 2017, at 3:07 PM, Fabio Maino <[e-mail]<mailto:[e-mail]>> wrote:

On 11/29/17 3:05 PM, Dino Farinacci wrote:
How about this wording Fabio:

P: The P-bit is the Next Protocol bit. When set, the low-order 8 bits is used for the Next Protocol field. When the N-bit is also set with the P-bit, the Nonce field is the middle 16 bits. When the V bit is also set with the P-bit, the Version field is the middle 16 bits. Details on Next Protocol field usage are described in [draft-lewis-lisp-gpe].

Comments?
much better.

Thanks,
Fabio

Dino

On Nov 29, 2017, at 2:49 PM, Fabio Maino <[e-mail]<mailto:[e-mail]>> wrote:

Definition of the P bit will look like:

   P: The P-bit is the Next Protocol bit. When this bit is set to
      1, Nonce length, when used, is limited to 16 bits and the lenght
      of the Source and Destination Map-Version fields, when used, is limited
      to 8 bits. Refer to [draft-lewis-lisp-gpe] for more details.
      The P-bit is set to 1 to indicate the presence of the 8 bit Next Protocol field encoded as:



Do you think the overall proposed extension makes sense?

Thanks,
Fabio

On 11/29/17 2:38 PM, Fabio Maino wrote:
On 11/29/17 2:36 PM, Dino Farinacci wrote:
The use of the P-bit is not compatible with the Map-Versioning feature, but an equivalent function can be specified (if needed) with a Next-Protocol shim header. I can add text to the LISP-GPE draft to reflect that.
Well it could be. Just like you did with the Nonce field. Make the Version field the middle 16-bits. So V and P can be set at the same as well as N and P.

Dino

Good point, shortening versions to 8 bits...

Seems fine to me.


Fabio




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