North American Network Operators Group
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RE: anycasting behind different ASNs?

  • From: James Jun
  • Date: Wed Dec 06 13:32:46 2006 
> 
> Are there any practical issues with announcing the same route behind
> different ASNs?

No.

> 
> Shortly I'll have two seperate sites (EU, US) announcing their own space
> behind their own ASNs but have a desire to anycast a particular network
> out of both locations as well.
> 
> (This is just my attempted to now have to deal with GRE tunnels between
> sites that aren't logically connected anyways and using the same ASN).


Check 192.88.99.0/24.  It is an anycasted prefix for 6to4 tunneling.  No AS
number was assigned for 6to4, thus it has inconsistent AS origin, and works
without any problems.


Regards,
james