On Fri, Mar 13, 2020 at 7:45 AM S L <sl.network.mailing@gmail.com> wrote:

Is there anyone on here from Amazon, they appear to have stopped advertising all of their prefixes on the LINX exchange since Sunday.

Emailing their peeringdb contacts yields no response, they only ever seem to respond when they want something from you.

Them withdrawing their prefixes seems to be becoming a regular thing on LINX.

Hi Scott, When you have a large number of geographically dispersed peering points, BGP starts to make some unexpected choices. I've seen traffic from China to Taiwan transit Los Angeles despite a dozen closer peering points because the AS path was shorter. When Amazon has a problem with a system component, anything from hardware failure to customer complaint to metrics that reveal a performance issue, the go-to mitigation is to remove that component from service and let the remainder take the load. Restoration is then triaged. It will definitely wait for root-cause analysis and change to the automated configuration and may have to wait for software development as well. Unless the metrics with the component out of service reveal a significant impairment or a major paying customer complains, it won't triage to a high priority. All of which is to say: even if you could get a response from them, they wouldn't restore the BGP announcements any sooner. Sucks, but that's how it is. If that peering is important to you, you're going to want to peer in additional locations. Regards, Bill Herrin -- William Herrin bill@herrin.us https://bill.herrin.us/