Service provider story about tracking down TCP RSTs

William Herrin bill at herrin.us
Sat Sep 1 20:00:36 UTC 2018


On Sat, Sep 1, 2018 at 2:51 PM,  <frnkblk at iname.com> wrote:
> pointing out that a
> single traceroute to a Fastly site was hitting two of their POPs (they use
> anycast) and because they don’t sync state between POPs the second POP would
> naturally issue a TCP RST (sidebar: fascinating blog article on Fastly’s
> infrastructure here:
> https://www.fastly.com/blog/building-and-scaling-fastly-network-part-2-balancing-requests).

Oh for Pete's sake. If they're going to attempt Anycast TCP with a
unicast protocol stack they should at least have the sense to suppress
the RSTs.

Better yet, do the job right and build an anycast TCP stack as
described here: https://bill.herrin.us/network/anycasttcp.html

Regards,
Bill Herrin


-- 
William Herrin ................ herrin at dirtside.com  bill at herrin.us
Dirtside Systems ......... Web: <http://www.dirtside.com/>


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