R1#sh run | b router
router eigrp 100
 network 17.57.100.1 0.0.0.0
 network 208.28.1.1 0.0.0.0
 distribute-list prefix NotMine in Serial0/0.1
 no auto-summary
!
!
ip prefix-list NotMine seq 5 deny 17.0.0.0/10 le 32
ip prefix-list NotMine seq 10 permit 0.0.0.0/0 le 32
!



R2#sh run | b router
router eigrp 100
 network 2.2.2.2 0.0.0.0
 network 208.28.1.3 0.0.0.0
 distribute-list 1 in Serial1/0.1
 no auto-summary
!
access-list 1 deny   2.0.0.0 0.255.255.255
access-list 1 permit any
!



R3#sh run | b router
router eigrp 100
 network 17.80.1.1 0.0.0.0
 network 208.28.1.2 0.0.0.0
 no auto-summary
!