nanog mailing list archives
Re: IPv4 Anycast?
From: Zhenkai Zhu <zhenkai () ucla edu>
Date: Wed, 22 Apr 2009 13:01:48 -0700
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
Current thread:
- IPv4 Anycast? Zhenkai Zhu (Apr 21)
- Re: IPv4 Anycast? Nathan Ward (Apr 21)
- Re: IPv4 Anycast? Zhenkai Zhu (Apr 22)
- Re: IPv4 Anycast? kris foster (Apr 22)
- Re: IPv4 Anycast? Nathan Ward (Apr 22)
- Re: IPv4 Anycast? Jack Bates (Apr 22)
- RE: IPv4 Anycast? Fouant, Stefan (Apr 22)
- Re: IPv4 Anycast? Zhenkai Zhu (Apr 22)
- Re: IPv4 Anycast? Jack Bates (Apr 22)
- Re: IPv4 Anycast? Patrick W. Gilmore (Apr 22)
- Re: IPv4 Anycast? Kevin Loch (Apr 22)
- Re: IPv4 Anycast? Jeroen Massar (Apr 22)
- Re: IPv4 Anycast? Shin SHIRAHATA (Apr 22)
- IPv6 Operators List (which also covers 6to4 operation ;) (Was: IPv4 Anycast?) Jeroen Massar (Apr 22)
- Re: IPv6 Operators List (which also covers 6to4 operation ; ) (Was: IPv4 Anycast?) Shin SHIRAHATA (Apr 23)
- Re: IPv4 Anycast? Zhenkai Zhu (Apr 22)
- Re: IPv4 Anycast? Nathan Ward (Apr 21)
- Re: IPv4 Anycast? Patrick W. Gilmore (Apr 22)
- Re: IPv4 Anycast? Jack Bates (Apr 22)
- Re: IPv4 Anycast? Joe Provo (Apr 22)