Ali
Eigrp stub connected will send connected routes. But if the connected routes are not covered by a network statement then you may need to add "redistribute connected" under your EIGRP config if you do not want to add specific network statements.
The summary option will work without any additional network statements as long as you either
a) have a summary address configured on the router
b) You are at a major network boundary and use "auto-summary" under our EIGRP config.
So if you cannot use a direct netwrok statement under EIGRP then both could be used. If you cannot even redistribute connected then the summary one would be the one to use.
HTH
Jon
