[ixpmanager] route server template/32bit ASNs

[Stefan Kaltenbrunner]

On 08/06/2015 03:41 PM, Andreas Polyrakis wrote:
> Hello Stefan,

Hi Andreas!

> 
> Attached you can find our implementation of route servers, including the
> IXPmanager templates.
> 
> We follow approach #2, with extended communities.  Although Nick's
> concerns are valid, we have not encountered cases with members with
> routers not supporting this feature yet.
> 
> If you decide to follow our implementation, I can send you an improved
> version of the function master_to_as() -- but this one also works fine.

thanks a lot for those examples - would love to see the improved version
of master_to_as() as well as getting those docs in a plain text format
because it kinda looks like the PDF has some lines cut off :/

> 
> Please keep in mind that the IXPmanager prefix analysis tool is
> hardcoded to the IXPmanager's implementation of the route servers -- the
> script will break if you change the naming (as we did). We can supply
> the modified script if you want it.

thanks for the hint - but we have some modifications in ours already as
well so I would have to adapt anyway.


regards


Stefan


> 
> Regards,
> 
> 
> 
> On 08/06/2015 04:13 PM, Stefan Kaltenbrunner wrote:
>> 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
>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> INEX IXP Manager mailing list
>>>> ixpmanager at inex.ie
>>>> https://www.inex.ie/mailman/listinfo/ixpmanager
>>>
>>> _______________________________________________
>>> INEX IXP Manager mailing list
>>> ixpmanager at inex.ie
>>> https://www.inex.ie/mailman/listinfo/ixpmanager
>>>
>>
>> _______________________________________________
>> INEX IXP Manager mailing list
>> ixpmanager at inex.ie
>> https://www.inex.ie/mailman/listinfo/ixpmanager
>>
> 
>