[Outages-discussion] [outages] Problems With Google?

[Gert Doering]

Moin,

On Mon, Nov 12, 2018 at 10:29:10PM -0600, frnkblk at iname.com wrote:
> https://blog.thousandeyes.com/internet-vulnerability-takes-down-google/
> 
> Good blog entry on the event.  Was hoping to see Dyn (now Oracle) or BGPmon (OpenDNS => now Cisco) and QRrator to chime in, but haven???t seen anything from them, yet.

What I find surprising here is: the *same* prefixes are announced over a
+3 AS longer AS path (instead of a more-specific prefix).  

So for BGP to actually prefer this significantly longer path (especially
given the average path length to google for most ISPs) someone would have
to be messing with local-preference...

Did I mention that changing local-preference on peerings and uplinks 
usually is a bad idea?  "This is a good example why"...

gert

-- 
"If was one thing all people took for granted, was conviction that if you 
 feed honest figures into a computer, honest figures come out. Never doubted 
 it myself till I met a computer with a sense of humor."
                             Robert A. Heinlein, The Moon is a Harsh Mistress

Gert Doering - Munich, Germany                             gert at greenie.muc.de