Hi-
I'd like to know if anyone can shed light on this matter.
RFC 2373 (IPv6 Addressing Architecture) defines IPv6 anycast addresses and
notes that a "packet sent to an anycast address is routed to the 'nearest'
interface having that address, according to the routing protocols' measure
of distance". Who defines nearest and how is it defined? Do the anycast
routers communicate with each other and elect a router to perform the
metrics? I assume these metrics are measured with respect to the source
address?
I'd also be interested in hearing any real world experiences with anycast
addresses, such as inefficiencies, etc., and how anycast addresses are
limited in practice, such as if anycast address participants must be defined
on a router a priori elected to serve as the address coordinator, etc.
Best regards,
John Wells
--
John WELLS
ENSIMAG/3A T�l�comm/R�seaux - INRIA Rh�ne-Alpes
Virginia Tech MS/Computer Engineering - Networking and Visualization Lab
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