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Hi David,<br>
<br>
thank you for the clarification.<br>
<br>
Regarding the commercial feature request — this is something we
could definitely consider and potentially agree on from our side.<br>
<br>
In the meantime, I experimented a bit and, with the help of AI,
prepared and tested a patch that allows setting the BGP aggregator
attribute directly in filters. It works for our use case so far, so
perhaps it could be useful for others as well.<br>
<br>
Best regards,<br>
Pavel
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<div class="moz-cite-prefix">Dne 14. 04. 26 v 16:00 David Petera via
Bird-users napsal(a):<br>
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<blockquote type="cite"
cite="mid:91a0999f-2513-4e9a-954b-e5d1853cdf68@nic.cz">
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<p>Hi Pavel,<br>
<br>
sadly, BIRD does not currently support setting the BGP
aggregator attribute. (You can only unset it in the filters
using `unset` function)<br>
<br>
Neither is there a plan to add support for it in the near
future.<br>
<br>
However we offer commercial feature request contracts, in case
your organization would be able to provide funds for such
development.<br>
You can find more info about it on our website: <a
class="moz-txt-link-freetext"
href="https://bird.nic.cz/commercial-services/#deployments-feature-request"
moz-do-not-send="true">https://bird.nic.cz/commercial-services/#deployments-feature-request</a><br>
<br>
Hope this helps,<br>
David</p>
<pre class="moz-signature" cols="72">David Petera (he/him) | BIRD Tech Support | CZ.NIC, z.s.p.o.</pre>
<div class="moz-cite-prefix">On 4/14/26 14:31, Pavel Trefný wrote:<br>
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cite="mid:075da421-2020-47bf-b29b-2412d21db84e@trefcon.cz">
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<p class="isSelectedEnd"><span>Hi,</span></p>
<p class="isSelectedEnd"><span>I have a question regarding BIRD.
Is it possible to set the BGP aggregator attribute for a
prefix using filters?</span></p>
<p class="isSelectedEnd"><span>This would be useful in our
anycast setup, where it can be difficult to determine the
origin of a prefix. Using communities is unfortunately not a
viable option for us — some of our hardware does not support
extended communities, and upstream networks often filter
them.</span></p>
<p class="isSelectedEnd"><span>To clarify, I am not looking for
route aggregation itself, but specifically a way to set the
aggregator attribute.</span></p>
<p class="isSelectedEnd"><span>Thank you for any insights.</span></p>
<p><span>Best regards,</span><br>
<span>Pavel Trefny</span></p>
<p><span><br>
</span></p>
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