RE: The state of IPv6 multihoming development

[Iljitsch van Beijnum <iljitsch@muada.com>]

On Thu, 24 Oct 2002, Hesham Soliman (EAB) wrote:

>   > So what's the use then? We don't multihome because we like
>   > having many addresses, but to survive failures.

> => That's why I asked: "How much interruption is acceptable?"
> What do you mean by survive failure? Is it ok to lose 150 ms
> of traffic? Or are you asking for a seamless survival failures
> (i.e. zero interruption). Frankly I don't think that a 100 - 200 ms
> interruption is a big deal, considering that this failure is not
> something that will happen once a minute.

The shorter the better, but anything under 15 seconds is good enough,
IMO.

>   > How does a mobile host survive the home agent becoming unreachable?

> => I'm confused. Why would a home Agent become unreachable??
> You seem to assume that the HA must be located in the
> upstream provider's network (that's the only interpretation
> I can think of for your statement above). The HA can be located
> in the mutlihomed enterprise.

Ah, I see now. I'm not sure where exactly I envisioned the home agent,
but I didn't consider moving it to a place that is multihomed through
separate means. Still, we'd need a good solution for all the home agents
(at least this will lessen the problem a good deal) and having a single
point of failure somewhere isn't optimal.