Those of us who may limit the meaning of "eternal life" to heaven can get a richer meaning from this prayer. Jesus defines eternal life as a life shaped by knowing God and knowing Jesus Christ who has been sent by God. In their commentary on John, Gail O'Day and Susan Hylen say "Jesus makes God known to people (They suggest looking at verses 6, 24, and 26) and, in so doing, provides eternal life.
Jesus asked God to glorify your Son so that the Son may glorify you. Allen and Williamson in Preaching the Gospels point out that in the First Testament, "glory" and "glorification" referred to God's manifesting the divine will and power through people. They gives as examples, Exodus 16:10; 24:7; Wisdom 9:10; 2 Maccabeus 2:8.
In the days to come, these disciples will come together and scatter apart. The church still does. Jesus prayed that God would protect us so that we would be one. How unified are we? In what ways do we demonstrate that we know God? In what ways do we demonstrate that we are part of the world?