Re: What is necessity for SRH, and other EH, insertion/removal?

Le 20/12/2019 à 05:23, Tom Herbert a écrit :
> On Thu, Dec 19, 2019 at 7:12 PM Mark Smith <markzzzsmith@gmail.com> wrote:
>>
>> On Thu, 19 Dec 2019 at 09:08, Tom Herbert <tom@herbertland.com> wrote:
>>>
>>> On Sat, Dec 7, 2019 at 9:17 AM Tom Herbert <tom@herbertland.com> wrote:
[...]
> All good points, but I'm not sure that punting problems because their
> hard to L2 is the answer. I could just as easily ask if MPLS was so
> good, then why was segment routing even invented? Clearly there's
> incentive to standardize on IP protocols for carrying end-to-end
> information.

I think an improved mechanism of using IPv6 (and potentially its 
extension headers) to achieve same goals as MPLS achieves would be 
better than currently MPLS-for-IPv4.

Fine engineering trade-offs could be found between too many 
encapsulation headers, packet modification en-route, and limited domains.

One easy thing to do would also for proponents to accept to get rid of IPv4.

There are many other easy things to do.

Alex

  Besides that, things are pretty far down the path for
> sending IOAM over IPv6 and in fact there might even be consensus that
> HBH options are the correct way to do that as opposed to a lot of
> other hacks that have been suggested.
> 
> Tom
> 
>> Regards,
>> Mark.
>>
>>
>> * "Inter-Switch Link and IEEE 802.1Q Frame Format",
>> https://www.cisco.com/c/en/us/support/docs/lan-switching/8021q/17056-741-4.html
>>
>>> Tom
>>>
>>>> Please note, I'm asking for the technical justification of the
>>>> protocol design, saying that it's necessary because it's already being
>>>> deployed isn't useful in this regard.
>>>>
>>>> Tom
>>>
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