Thank you very much for your note. I am somewhat familiar with the
situation in Namibia and less so in Angola.
In message <[log in to unmask]>, "Michael Epah" wr
> > You can, of course, have intranets run on the non routeable
> > addresses. This is in fact a godd idea, to conserve addresses and for
> > firewalling purposes. But you can NOT mix non routeable addresses with
> > routeable ones.
> Well it depends on what you mean when you talk of "mixing non routable
> addresses with routable ones".
> We as a company have a mix of routable and non routable
> addresses. We are also part of the Metropolitan Area Network
> Darmstadt (MAN-DA) in Germany. The backbone of this network uses
> non routable addresses. The institutions (Universities, Research
> Companies) are connected to the internet through two seperate
> ISPs. We have our own BGP AS. One of the ISPs is there for amongst
> other things failover purposes.
We are not talking of using non routeable addresses to connect the two
router interfaces (running the backbone).
You can do that but you can also do away with IP addresses for the
serial interfaces totally (at least on CISCOs) through using the IP
address of the ethernet interface, which MUST be routeable.
AND you have your own AS, which neither Angola nor Namibiaīs networks
have. We managed to o move our network block into another AS but
probably because it is big enough. A single class C depends on the
good will of the connectivity providers involved, some may just refuse
to route such small networks.
> I didn't mean to prescribe a solution to a specific problem. I was
> commenting in general terms. All I was saying is: If you use NAT,
> then it doesn't matter how your address struckture looks like
> internally - you can mix routable and non routable addresses.
No, in practice (for the purposes under discussion), you can not, you
can, perhaps stretch the number of available adresses, but, as above
you donīt have to do that in the first plac.
FOr the problem at hand, I feel the simplest solution is to renumber
on change of ISPs.