We hv a customer setup as per attached topology.
Primary leased line with ISDN fallback from Service Provider-1.
Proposed Secondary backup on RF from Service Provider-2.
Router used = Cisco 1800 series.
Objective :- To achieve Link redundancy for inbound and outbound internet traffic.
Hosted servers with natted public IP should be reachable if ISP-1 or ISP-2 link is down.
Pls suggest if we can acheive it and how.
regards