Forwarding UDP Broadcast Packets and Protocols If you do not specify any UDP ports when you configure the forwarding of UDP broadcasts, you are configuring the router to act as a BOOTP forwarding agent. BOOTP packets carry DHCP information. Procedure Configuring IP Unicast Routing Forwarding UDP Broadcast Packets and Protocols Command or Action Purpose Step 9 ip forward-protocol {udp [port] | nd | sdns} Example: Device(config)#ip forward-protocol nd Specifies which protocols and ports the router forwards when forwarding broadcast packets. • udp—Forward UPD datagrams. port: (Optional) Destination port that controls which UDP services are forwarded. • nd—Forward ND datagrams.
• sdns—Forward SDNS datagrams Step 10 end Example: Device(config)#end Returns to privileged EXEC mode. Step 11 show ip interface [interface-id] Example: Device#show ip interface Verifies the configuration on the interface or all interfaces Step 12 show running-config Example: Device#show running-config Verifies your entries. Step 13 copy running-config startup-config Example: Device#copy running-config startup-config (Optional) Saves your entries in the configuration file. Command or Action Purpose Step 1 enable Example: Enables privileged EXEC mode. Enter your password if prompted. Configuring IP Unicast Routing 24