Jack Bates wrote:
Zhenkai Zhu wrote:
Then there is basically no inter-As anycast besides the anycast
prefix for DNS root, since I only noticed like 8 prefixes that are
announced by more than 3 ASes..
I presume you are using route-views or some such to get a larger
picture of the BGP geography?
Yes.
I believe that many anycasts utilize the same ASN for their anycasted
address space. I would expect that a few of them have an ASN
specifically for their anycasted space.
Given that the networks are duplicates, there's no requirement that
one part of the AS needs to receive routes from the other part of the
AS. For management and such of the devices, I presume there are
separate netblocks advertised with a different ASN (possibly even
statically assigned by a hosting network).
I just want to make sure if I understand correctly. You mean that the
anycasted address space can be announced in different places yet with
the same origin AS?
Zhenkai
Jack
