It varies; for direct peering/connections where a link goes down (and fast failover protocol is used), usually 5 seconds or so. Global propagation takes in the

It varies; for direct peering/connections where a link goes down (and fast failover protocol is used), usually 5 seconds or so. Global propagation takes in the order of 5 minutes or less: https://labs.ripe.net/author/vastur/the-shape-of-a-bgp-update/ https://labs.ripe.net/author/vastur/the-shape-of-a-bgp-updat...