3 ms·
This provides a good set of details (mostly educational) what happened up to but not including the how and why the BGP routes were withdrawn (who sent the UPDAT
by WaitWaitWha 5y ago
This provides a good set of details (mostly educational) what happened up to but not including the how and why the BGP routes were withdrawn (who sent the UPDATE packets to the neighboring ASes?).
The most "natural" occurrence that I can think of is best-path change. If a "better" route between AS is added, the now-second-best routes are withdrawn.
Correct me if I am wrong, but there is no way of determining the source of the withdraw message (UPDATE)...
- WaitWaitWha 5y agoLove to hear the reason for the downs.
- asadjb 5y agoThat info. would probably come from FB though, not Cloudflare. At least that's how I understand the incident.
- WaitWaitWha 5y ago> "Our engineering teams have learned that configuration changes on the backbone routers that coordinate network traffic between our data centers caused issues that interrupted this communication. " and > "... its root cause was a faulty configuration change on our end." From https://engineering.fb.com/2021/10/04/networking-traffic/outage/ https://engineering.fb.com/2021/10/04/networking-traffic/out...