On Mon, Dec 12, 2011 at 09:33:37PM +0000, Karanbir Singh wrote: > On 12/09/2011 02:31 PM, Matt_Domsch at Dell.com wrote: > > I don't expect sub-country-level GeoIP to be of benefit, because inside a country, the network topology rarely matches the physical geography in any close relationship. > > > > In some places it makes quite a big difference, eg: Hawaii is linked up > in a way that local traffic is always going to be faster than, say from > NYC. Similarly in Europe and parts of Asia, most people peer locally. > > Also, keep in mind that large numbers of CentOS installs existing inside > local DC's ( its not uncommon to have 20,000 CentOS installs within 2 > hops of a mirror ). They should always get a local preference rather > than something from say 800 miles away. Similar universities etc. MirrorManager redirects to a mirror in the same ASN if that is specified in the mirrormanager entry as well as it redirects to a mirror if the mirror admin (for that entry) specified which netblocks are local. For my mirror, for example, I have specified over 20 subnets and those clients are always redirected to my mirror because they are connected to the same research network. So cases like universities and DC's are covered by MirrorManager (if the admin specified the correct information). Adrian