[ixpmanager] route server template/32bit ASNs

[Stefan Kaltenbrunner]

On 08/06/2015 03:03 PM, Nick Hilliard wrote:
> Hi Stefan,

Hi Nick!

>
> 1. static mapping doesn't scale

I agree there but for our usecase we probably dont need that level of 
scaling for the forseeable future...

>
> 3. INEX did some models based on this a couple of years ago and decided
> that it wouldn't work

could you elaborate on "wouldn't work"? if it works for AMS-IX 
(disclaimer: I only read their docs so far and talked to some active 
users of the feature there) - it should work for most IXPs...

>
> 2. is potentially interesting but is limited by the fact that not all
> routers support draft-ietf-idr-as4octet-extcomm-generic-subtype, and many
> only support a small number of fixed types of extended community.  This
> means that interoperability is a problem.

hmm - I dont assume there is some sort of list available on who does and 
who does not?

>
> There are no good solutions to this problem at the moment.  INEX advises
> route server users to use ASN16s, but that can mean renumbering ASNs.

yeah - we are talking a small IXP starting up here that has a large 
number of "first IXP we are connected" participants with ASN32 on one 
side (and having to renumber would be way too much work for them) and a 
number of fairly large ISPs that need that kind of control because of 
downstream agreements with some of the participants.


thanks for the insight though & regards


Stefan

>
> Nick
>
> On 06/08/2015 08:27, Stefan Kaltenbrunner wrote:
>> Hi all!
>>
>>
>> We recently deployed IXP-Manager as the management platform for SAIX
>> (https://www.saix.at). One thing that pretty quickly came up is the fact
>> that the current routeserver templates (we use bird) do not have any
>> support for any kind of controlling announcements for 32bit ASNs.
>> Looking at what other IXPs do there seem to be three different methods
>> currently in use:
>>
>> * static mapping of 32bit ASNs to communities in the 64512 to 65534 range
>> (mostly smaller/midsized exchanges)
>> * BGP extended communities (DE-CIX)
>> * IRRdb/RPSL based outgoing filtering (AMS-IX)
>>
>> are there any plans of adding any of those concepts to IXP-Manager or maybe
>> has somebody already created a template/integrations scripts to look at?
>>
>>
>> regards & thanks for a great platform to kickstart an IXP!
>>
>> Stefan
>>
>>
>>
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>> ixpmanager at inex.ie
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>
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