Receiving routes with own AS?

[Tom van Leeuwen]

That sounds very logical.
The only way around this is iBGP or a new AS number?

~tvl

On 06/24/2012 09:59 PM, Martin Kraus wrote:
> On Sun, Jun 24, 2012 at 07:17:58PM +0200, Tom van Leeuwen wrote:
>> Hi guys,
>>
>> We have a new location and have installed a bgp server with bird.
>> We are already using our AS and bird at the main site, but want to
>> use that one as well on the second site.
>>
>> I'm not sure if I want/need to run iBGP, but if I had and the link
>> would fail, I should have at least a route through IPT to our main
>> site.
>>
>> I'm already connected through IPT at our new site, but I'm not
>> getting any routes for our subnets that are being announced at our
>> main site. Our upstream provider says that they are not filtering
>> the routes and that it should be my configuration that is filtering
>> them. Well, I have 'import all' so that should not be the problem.
>> Does bird have some built in logic that does not accept routes with
>> my own AS? Or is the IPT incorrect?
> BGP filters out routes which have it's AS in the AS path as a loop prevention.
> This is a feature of BGP.
>
> mk