Multihoming - Resilience or Independence

On Wed, 2001-10-10 at 15:24, Nipper, Arnold wrote:
> Stephen meinte:
> 
> > One major problem is not being able to offer an SLA on the routing of the
> > address space, apart from the fact it is yet another route in the global
> > routing tables.
> 
> I can't see why you can't have SLAs. And which SLA exactly are you talking
> about? 
>
> [...]
>
> motd (mantra of the day): re-do your homework. It was not good.

Read again.  Stephen wrote "SLA on the routing of the address space". 
Global routing of anyone's address space is dependent on the routing
policies of individual (third-party) ISPs.  Some may be your direct
peers and you can have agreements with them; many others won't and
there's no way you can guarantee they'll route your customer's address
space.  The larger the prefix, the larger the chance of some network
operator out there filtering it to oblivion.

Cheers,
Steven