A total of 27 players were present at the session, with the only absentee being Victor Moses, who is no longer expected after speaking with team officials.
Keshi took the team through possession and pressing drills on the artificial turf of the FIFA Goal Project Centre.
Two players, John Mikel Obi and Obinna Nsofor, who are nursing various inhjuries, did not train with the group.
Mikel trained on his own on the natural grass of the National Stadium instead, while Nsofor sat out the session.
The squad will train again at 5pm on Wednesday and depart for Benin on Thursday.
PLAYERS IN CAMP Goalkeepers: Vincent Enyeama, Austin Ejide, Chigozie Agbim
Defenders: Joseph Yobo, Yusuf Ayila, Taye Taiwo, Chibuzor Okonkwo, Efe Ambrose, Ugo Ukah, Dele Adeleye, Gege Soriola, Elderson Echiejile,
Midfielders: Kalu Uche, John Mikel Obi, Joel Obi, Fengor Ogude, Nosa Igiebor, Dickson Etuhu
Strikers: Chinedu Obasi, Ekigho Ehiosun, Brown Ideye, Ahmed Musa, Jude Aneke, Edward Ofere, Emmanuel Emenike, Obinna Nsofor, Ike Uche