R1#sh run int e 0/0
Building configuration...

Current configuration : 241 bytes
!
interface Ethernet0/0
 ip address 17.57.100.1 255.255.255.0
 ip directed-broadcast
 ip pim sparse-dense-mode
 ip multicast rate-limit in video 80
 ip multicast helper-map 224.1.1.1 17.57.100.255 100
 ip igmp access-group 1
 half-duplex
end

R1#sh run | i access-list 100
access-list 100 permit udp any any eq tftp
R1#


R2#sh run int fa 0/1
Building configuration...

Current configuration : 173 bytes
!
interface FastEthernet0/1
 ip address 180.40.7.98 255.255.255.224
 ip pim sparse-dense-mode
 ip multicast helper-map broadcast 224.1.1.1 100
 duplex auto
 speed auto
end

R2#sh run | i access-list
access-list 100 permit udp any any eq tftp
R2#