I just have the Dispatcher URI and Gateway URI in the following formats respectively:
protocol://host_name_or_IP:port/context_root/alias_path
protocol://host_name_or_IP:port/virtual_directory/gateway_application and protocol://host_name_or_IP:port/context_root/alias_path
When I try to ping them (sorry I can't share them here), I can't get them to resolve even though they work just fine in Cognos Config (can save and encrypt (successfully). Not sure if that's a problem on my end or I'm just not allowed to see the addresses.