R1#sh run | b interface Serial0/0.1
interface Serial0/0.1 point-to-point
 ip address 180.40.7.34 255.255.255.224
 ip pim sparse-dense-mode
 ip multicast helper-map 224.66.66.66 17.100.1.255 100
 ip ospf network point-to-multipoint
 frame-relay interface-dlci 103
!
interface Serial0/0.2 point-to-point
 ip address 180.40.7.66 255.255.255.224
 ip pim sparse-dense-mode
 ip multicast helper-map 224.66.66.66 17.100.1.255 100
 ip ospf network point-to-point
 frame-relay interface-dlci 102
!
interface Ethernet0/1
 ip address 17.100.1.1 255.255.255.0
 ip directed-broadcast
 ip pim query-interval 90
 ip pim sparse-dense-mode
 ip igmp query-interval 90
 half-duplex
 no keepalive
!

access-list 1 deny   224.20.73.1 15.128.20.0
access-list 1 permit any
access-list 2 permit 239.0.0.0 0.255.255.255
access-list 100 permit udp host 180.40.7.97 host 224.66.66.66 eq tftp