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Re: [Anima] [homenet] ANIMA scope + homenet interaction + charter v15

Brian E Carpenter <brian.e.carpenter@gmail.com> Sat, 01 November 2014 00:19 UTC

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Date: Sat, 01 Nov 2014 13:19:08 +1300
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
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To: Ralph Droms <rdroms.ietf@gmail.com>
References: <544FF8FC.5090103@cisco.com> <95338658-B4F2-4634-AC7B-7B893C4DEF2E@iki.fi> <5D36713D8A4E7348A7E10DF7437A4B923AF6C46E@nkgeml512-mbx.china.huawei.com> <DEB8F897-3CED-4C59-BEBF-BF64096282F2@fugue.com> <5D36713D8A4E7348A7E10DF7437A4B923AF6C7AE@nkgeml512-mbx.china.huawei.com> <8490A544-45A9-45D2-9C98-D3CBEB28651D@fugue.com> <5D36713D8A4E7348A7E10DF7437A4B923AF6C8A9@nkgeml512-mbx.china.huawei.com> <E597E398-6AFB-4355-B2C4-8559D19A6AF0@fugue.com> <5453E246.9000705@gmail.com> <6AD5ADBE-649C-4E30-B2DE-2FE95EEB5112@fugue.com> <9D2D95EC-61CE-48A0-8196-4563E65F963C@gmail.com>
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Cc: Markus Stenberg <markus.stenberg@iki.fi>, Ted Lemon <mellon@fugue.com>, Benoit Claise <bclaise@cisco.com>, "homenet@ietf.org" <homenet@ietf.org>, "anima@ietf.org" <anima@ietf.org>, Sheng Jiang <jiangsheng@huawei.com>
Subject: Re: [Anima] [homenet] ANIMA scope + homenet interaction + charter v15
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On 01/11/2014 12:28, Ralph Droms wrote:
> 
> 
> 
>> On Oct 31, 2014, at 4:04 PM, Ted Lemon <mellon@fugue.com> wrote:
>>
>>> On Oct 31, 2014, at 3:25 PM, Brian E Carpenter <brian.e.carpenter@gmail.com> wrote:
>>> Well yes. That's exactly why in autonomic management of prefixes,
>>> we need peer to peer negotiation, as in "I need 3 /64s that I
>>> don't have, do you have any spare ones for me?" Maybe it's
>>> badly explained but that is the whole point of our use case.
>> Sure, you can approach it as a sort of flood fill algorithm that tries to optimize for route aggregation, but copes if that optimization doesn't pan out.
>>
> Do we have use cases in which the number of links is so large that unaggregated routing tables will be a problem?

Not that I'm aware of. In the case of a carrier, the prefix will be aggregated
anyway when it is announced to peer carriers, and possibly aggregated
regionally anyway if it's a very large carrier. Of course, there will be
a scaling limit and that should be a consideration in the design.

    Brian

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