<div dir="auto">Say you have router A having routes with localpref 50, and router B with localpref 100. When A receives a prefix from B, it will be the best in A's table. Router A will not try to propagate routes with localpref 50, because only the best route are propagated (usually). And as the best route is that was received from B, then B will get nothing back.</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, May 17, 2024, 19:16 Nico Schottelius <<a href="mailto:nico.schottelius@ungleich.ch">nico.schottelius@ungleich.ch</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
I've a question to the list in regards to iBGP behaviour:<br>
<br>
- the router in question imports all routes with a bgp_local_pref of 50 [A]<br>
- the other routers import eBGP routes with a bgp_local_pref of 100 [B]<br>
- my assumption would be that the lower preference route would<br>
propagated via iBGP, however that is not the case<br>
- the above router also receive the higher preference routes via iBGP<br>
<br>
Is the default iBGP behaviour to *not* export routes with lower<br>
preference to other routers? That would explain the behaviour I see.<br>
<br>
Best regards,<br>
<br>
Nico<br>
<br>
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</blockquote></div>