Re: [v6ops] Revised Internet Drafts for allocation of IPv6 space for LISP EIDs

Brian E Carpenter <brian.e.carpenter@gmail.com> Thu, 24 October 2013 02:55 UTC

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Date: Thu, 24 Oct 2013 15:55:17 +1300
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
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Cc: "v6ops@ietf.org WG" <v6ops@ietf.org>
Subject: Re: [v6ops] Revised Internet Drafts for allocation of IPv6 space for LISP EIDs
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On 24/10/2013 09:00, cb.list6 wrote:
> On Wed, Oct 23, 2013 at 12:27 PM, Brian E Carpenter
> <brian.e.carpenter@gmail.com> wrote:
>> On 24/10/2013 04:36, Brian Haberman wrote:
>>> Hi Lorenzo,
>>>
>>> On 10/23/13 11:31 AM, Lorenzo Colitti wrote:
>>>> On Thu, Oct 24, 2013 at 12:29 AM, Brian Haberman
>>>> <brian@innovationslab.net>wrote;wrote:
>>>>
>>>>> "In order to provide connectivity between the Legacy Internet and LISP
>>>>> sites, PITRs announcing large aggregates (ideally one single large
>>>>> aggregate) of the IPv6 EID Block could be deployed."
>>>>>
>>>> That sounds very much like a 6to4 relay router, which experience has shown
>>>> was an unworkable deployment model. Why is this different?
>>>>
>>> It's not different.  But, that is the tact the LISP WG is trying to
>>> take.  Keep in mind that the referenced draft went through IETF Last
>>> Call and was subsequently sent back to the WG due to the concerns raised
>>> about routing and potentially creating a parallel address registry
>>> outside of the RIRs.
>> I think there is one difference from the 6to4 case - well, two actually.
>>
>> 1. A lot of operators learnt the hard way that failing to coordinate
>> 6to4 prefix routing between operators caused very substantial problems.
>> (And, btw, the 6to4 RFC said that such coordination was needed.)
>>
>> 2. LISP has grown out of the routing community, so the need for
>> operational coordination is presumably understood in that community.
>>
> 
> Maybe i am wrong, but i have an idea where LISP has grown out of, and
> it is not the networks operators that would have to coordinate this to
> work.

Agreed, routing community != network operators

I phrased it quite carefully.

   Brian

> 
> CB
> 
>> Nevertheless, the risk of a failure of coordination seems high.
>> But then, it seemed high for BGP4 itself in 1994.
>>
>>    Brian
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>