I am running BGP on my Cisco7204 router. I have a network of 8292 nodes. the gateway for all my nodes is the router mentioned above. I connect to an ISP with another AS. I too have an AS number. I want the request send by nodes in my network as to be seen by my ISP as request coming from only one IP..ie.. the WAN IP provided by my Service provider.Is this possible.
If you are saying you want all your devices appear to be addresses with the outside address (ISP side) of you router, then this is done simply with NAT. One caveat, however, is that the number of simultaneous connnections will be limited depending on the IP port number (socket) you are trying to hit.
If you are running an ISP behind your ISP and are trying to mask it, it won't work because you won't be able to supply enough IP ports to cover all internal IP addresses. If your ISP gave you a range of IPs (like a /28) you might be better off.