[c-nsp] LAM / Mobile IP in modern times

[Lincoln Dale]

On 10/08/2010, at 6:35 PM, Alexander Clouter wrote:
> I was toying with the idea internally of putting a tiny OSPF router into 
> our VM cluster to drag IP's from one side of our organisation to the 
> other.  

reality is that many hosts and applications require and expect layer 2 connectivity for things other than IP unicast when they think they are in the same IP subnet another host.

your suggested approach would cause those applications to fail.
whether the apps are doing the right or wrong this is somewhat academic.  "they work today" is the mantra i hear.

i can show you any number of RFC-breaking apps. :)

> That's how I would do things.

sounds like a nice exercise in ensuring your continued employment. :)


> The only remaining question is why for it's money have VMWare not done 
> the trivial task of making OSPF part of their VMotion malarkey...*sigh*

because its not /quite/ as simple as you suggest.


cheers,

lincoln.