--- kuznet@xxxxxxxxxxxxx wrote:
> > Anycast router
>
> No differences of unicast case.
>
> "Anycast listening" is really different, because we should
> prohibit to use these addresses as source addresses
> and delay NDISC replies.
>
You can only prohibit using anycast addresses as source addresses only
if you are semantically able to distinguish an anycast address from a
unicast address. This may be possible with the reserved subnet anycast
addresses that are defined for ipv6. However, nothing prevents the
user from using any unicast address as an anycast address.
For e.g., I use anycast with IPv4 as a simple mechanism to provide
failover between linux servers. You need to understand the constraints,
but if you do, anycast is simpler, and more scalable than most of the
other clustering schemes, not to mention free.
cheers!
__________________________________________________
Do You Yahoo!?
Thousands of Stores. Millions of Products. All in one place.
Yahoo! Shopping: http://shopping.yahoo.com
|