anycasting behind different ASNs?
scg at gibbard.org
Wed Dec 6 22:40:07 UTC 2006
On Wed, 6 Dec 2006, Deepak Jain wrote:
>> An easy way around this is to be consistent about your transit and peering
>> arrangements across locations. If your anycast network has transit from a
>> network in one location, get transit from them in your other locations, and
>> let hot potato routing do its thing. For cases where this isn't practical,
>> or where you want more control over who is sending traffic to a node,
>> declare the node to be a "peering only" node and make sure your peers
>> aren't leaking the anycast routes to their out of region upstreams.
> Or prepend (gasp!) like the Dickens for your "peering only" node to have
> transit, but be the route chosen after transit/connectivity to your
> "transit/peering ok" node fails.
Doesn't work. Local preference gets considered before AS path.
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