if the DHCP server is on a different subnet then you need a relay-agent to forward the Discover messages to the server.
On Cisco devices this is done by activation dhcp service and using ip helper-address x.x.x.x where x.x.x.x is the IP of the DHCP server and this command is run on the interface getting the Discover messages as broadcast and will transform them as unicast, don't forget that the DHCP server must have a route to the IP address where this command is configured to reply as unicast.
I don't understand your 2 first questions, you only need 1 DHCP service but multiple DHCP pools and you can configure quite a few without any problems, concerning the options you can setup quite a lot as far as I know.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.