Anycast 101
Stephane Bortzmeyer
bortzmeyer at nic.fr
Fri Dec 17 11:25:15 UTC 2004
On Fri, Dec 17, 2004 at 12:31:37AM +0100,
Iljitsch van Beijnum <iljitsch at muada.com> wrote
a message of 68 lines which said:
> and then sees an anycast instance for all root servers over
> peering. If then something bad happens to the peering connection
...
> but even if 5 or 8 or 12 addresses become unreachable the timeouts
> get bad enough for users to notice.
We can turn this into a Good Practice: do not put an instance of every
root name server on any given exchange point.
Actually, this is only a theoretical issue, the current maximum seems
to be only three (at the LINX in London).
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