Re: As path mangling ?

Carlos,
I'm not sure if i fully understand the issue fully, but would bgp
as-override on Central work for you? I thinking that might not work as
Internet would detect a loop of 300 200 300 and the only way to fix this is
with a allowas-in on the Internet side, but then again you don't have
access to that side (just thinking out loud).

Tom

On Thu, Dec 29, 2011 at 4:53 PM, Carlos G Mendioroz <tron_at_huapi.ba.ar>wrote:

> Hmm, I fail to understand how any of these is useful in my case:
>
> Remote -- <MPLS-VPN> -- Central -- Internet -- Carrier
> 65002 100 200 300 100
>
> When I (Central) publish to Internet, as-path ends up being
> "200 100", which is then rejected by Carrier (100 again).
>
> I do have admin access to Central (and Remote).
> The workaround I'm using is recreating the route at central
> with an aggregate, publishing subnets at Remote. Not very clean.
>
> -Carlos
>
> Narbik Kocharians @ 29/12/2011 19:10 -0300 dixit:
>
> You can even add a dual-as to the end which can be very useful,
>>
>>
>> Sent from my iPhone
>>
>> On Dec 29, 2011, at 1:48 PM, Christian Hunter <stasis416_at_gmail.com>
>> wrote:
>>
>> neighbor X.X.X.X local-as XX no-prepend replace-as
>>>
>>>
>>>
>>> On Thu, Dec 29, 2011 at 3:59 PM, Carlos G Mendioroz <tron_at_huapi.ba.ar
>>> >wrote:
>>>
>>> Hi there,
>>>> question asked many times: is there any way to "edit" the AS-PATH of an
>>>> update ? Is it easy to prepend, privates can be erased, but is there
>>>> (an easy) way to remove some AS ?
>>>>
>>>> The case in point is a publication at a central site of a remote
>>>> subnetwork that is linked via MPLS. The carrier is using its public
>>>> ASN and using BGP to do routing. Central site would then publish
>>>> with carrier's ASN as origin, and the carrier would not accept the
>>>> prefix on the public side :(
>>>>
>>>> Yuck.
>>>>
>>>>
>>>> --
>>>> Carlos G Mendioroz <tron_at_huapi.ba.ar> LW7 EQI Argentina
>>>>
>>>>
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>>>> >
>>>>
>>>
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>>
>>
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>>
>>
>>
>>
>>
>>
> --
> Carlos G Mendioroz <tron_at_huapi.ba.ar> LW7 EQI Argentina
>
>
> Blogs and organic groups at http://www.ccie.net
>
> ______________________________**______________________________**
> ___________
> Subscription information may be found at: http://www.groupstudy.com/**
> list/CCIELab.html <http://www.groupstudy.com/list/CCIELab.html>

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Received on Thu Dec 29 2011 - 17:07:51 ART