ip helper-address

routers do not forward broadcast addresses but the following command will convert those addresses to unicast addreses:

ip helper-address [Dest Address]

some of the other ports:-
Time Port:37
TACACS Port:49
DNS Port:53
BootP/DHCP Server Port:67
BootP/DHCP client Port:68
TFTP Port:69
NetBIOS Name Service Port:137
Remove ports with ‘no ip forward-protocol udp ?
add ports with ‘ip forward-protocol udp ?

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