R1#sh run int s 0/0.2
Building configuration...

Current configuration : 234 bytes
!
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 226.6.6.6 17.100.1.255 100
 ip ospf network point-to-multipoint
 frame-relay interface-dlci 102


access-list 100 permit udp host 180.40.7.97 host 226.6.6.6 eq tftp
R1#

R2#sh run | b ip dhcp
ip dhcp excluded-address 180.40.7.98
!
ip dhcp pool ForS6
   host 180.40.7.97 255.255.255.224
   client-identifier 0063.6973.636f.2d30.3030.612e.6634.3961.2e32.3338.302d.4661.302f.32
!
interface FastEthernet0/1
 ip address 180.40.7.98 255.255.255.224
 ip pim sparse-dense-mode
 ip multicast helper-map broadcast 226.6.6.6 100
 duplex auto
 speed auto
!

access-list 100 permit udp host 180.40.7.97 host 255.255.255.255 eq tftp
!