Multihoming - Resilience or Independence

Poul-Henning Kamp;

> I have been monitoring IPv6 for exactly this point:  how do IPv6 propose
> to give people redundancy/ressilience.
> 
> So far I have not seen anybody really say "this is how it should be done".

	draft-ohta-e2e-multihoming-00.txt

is dated April 2000.

And, now, there even is a multi6 WG of IETF.

> The best I have been able to gather is that it is expected that end
> customers assign multiple IP# to their servers and leave the selection
> to the DNS and the other end.  I don't know if the "anycast" idea
> was part of this solution but right now I certainly don't see any
> other solution than DNS.
> 
> My current advice to my customers are therefore: Multiple IP# per
> server, use DNS for load-balancing.

The problem is that load-balancing is not a reason for multi-homing.

With the same amount of payment, you should be able to get more
bandwidth from a single ISP (bulk discount) than from multiple
ISPs that there is no need for load-balancing.

							Masataka Ohta