On Tue, May 5, 2015 at 10:40 AM, Paul Quinn (paulq) <[email protected]> wrote:
> Hello,
>
>
>> On May 4, 2015, at 5:01 PM, Behcet Sarikaya <[email protected]> wrote:
>>
>> Hi VXLAN-gpe authors,
>>
>> After reading many times and discussions with one of the 12 coauthors :)
>> I think I now understand better this draft.
>>
>> The source of misunderstanding was the lack of problem statement. My
>> suggestion is to clearly define what this draft is intended to solve.
>>
>> Due to the fact that VXLAN is mentioned so much and Section is almost
>> copied from RFC 7248 causes a lot of confusion.
>>
>> What I understand is that this draft is addressing is non Layer 2 data
>> center networks. VXLAN addresses Layer 2 data center networks and
>> always assumes Ethernet frames in the payload.
>> Virtual machines always generate Layer 2 frames. VXLAN addresses
>> VM-to-VM communication.
>>
>> In general not all data center networks are Layer based, i.e. some are
>> Layer 3 based and there are no VMs that's why VXLAN-GPE does not talk
>> about VMs.
>>
>> I suggest that this point be clarified in the draft.
>>
>
> The introduction of the draft states the following:
>
> "The VXLAN header does not specify the protocol
>    being encapsulated and therefore is currently limited to
>    encapsulating only Ethernet frame payloads."
>
>
> " This document describes extending VXLAN to support additional payload
>    types beyond Ethernet frames.."
>
> Is this unclear?  If so, what do you propose?
>

The explanation is above in my mail.

L2 based and L3 based data center networks are quite well known in
nvo3, e.g. RFC 6820.
So people would understand it.

Behcet
>

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