On Tue, Dec 09, 2008 at 09:16:29AM +1100, Rod Whitworth wrote: > On Mon, 8 Dec 2008 16:40:56 -0500, Jason Dixon wrote: > > >I don't know how to answer your question because the network art above > >is unreadable. gre(4) will allow you to route networks across a tunnel. > >Think of it as IPSec without the Sec. It will allow networks that are > >usually non-routable (rfc1918) to route to each other. It will also > >allow you to extend segments of your public networks elsewhere. > > > > Let's go super simple. > Existing setup: > ISP#1------A------ISP#2 > A has a /30 on each side > A has a /29 routed to it from ISP#1 > > Desired setup: > ISP#1--A--ISP#2---------MyISP---B > ALL traffic to A via ISP#1 is to go to B > ALL replies to return via A > B will handle A's /29 > A should just be a "lump in the pipe" > Translation of addresses en route is fine as long as connections from > the cloud intended for A get to B and responses get back looking like > the real thing. > > Possible?
If I understand your description, yes. -- Jason Dixon DixonGroup Consulting http://www.dixongroup.net/

